{"title":"Aluminum Tube","description":"\u003cstyle\u003e\n    .rapidkeen-table-container {\n      width: 100%;\n      margin: 25px 0;\n      overflow-x: auto;\n      font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n      color: #333333;\n    }\n    .rapidkeen-intro {\n      font-size: 15px;\n      line-height: 1.6;\n      margin-bottom: 25px;\n      color: #4a2318;\n    }\n    .rapidkeen-tech-table {\n      width: 100%;\n      border-collapse: collapse;\n      text-align: left;\n      font-size: 14px;\n      line-height: 1.5;\n      border: 1px solid #ebdcd7;\n      background-color: #ffffff;\n    }\n    .rapidkeen-tech-table th {\n      background-color: #4a2318; \/* Rich Deep Copper \/ Dark Bronze *\/\n      color: #ffffff;\n      font-weight: 600;\n      padding: 12px 14px;\n      text-transform: uppercase;\n      font-size: 12px;\n      letter-spacing: 0.5px;\n      border-bottom: 3px solid #e07a5f; \/* Radiant copper accent line *\/\n    }\n    .rapidkeen-tech-table td {\n      padding: 12px 14px;\n      border-bottom: 1px solid #f2e8e5;\n      vertical-align: top;\n    }\n    .rapidkeen-tech-table tr:nth-child(even) {\n      background-color: #fdfaf9;\n    }\n    .rapidkeen-tech-table tr:hover {\n      background-color: #faf2f0; \/* Gentle warm copper sand glow *\/\n      transition: background-color 0.2s ease;\n    }\n    .grade-badge {\n      display: inline-block;\n      padding: 4px 8px;\n      background-color: #fdf3f0; \/* Light copper tint *\/\n      color: #b3391b; \/* Classic Red Copper tone *\/\n      font-weight: 700;\n      border-radius: 4px;\n      border: 1px solid #f5ded7;\n      font-family: \"Courier New\", Courier, monospace;\n      font-size: 13px;\n    }\n    .copper-type {\n      font-weight: 600;\n      color: #4a2318;\n      margin-bottom: 2px;\n    }\n    .copper-type-sub {\n      font-size: 12px;\n      color: #7a625c;\n      font-style: italic;\n    }\n    .rapidkeen-tech-table ul {\n      margin: 0;\n      padding-left: 18px;\n    }\n    .rapidkeen-tech-table li {\n      margin-bottom: 2px;\n    }\n    .rapidkeen-tech-table li:last-child {\n      margin-bottom: 0;\n    }\n    @media screen and (max-width: 768px) {\n      .rapidkeen-tech-table th, .rapidkeen-tech-table td {\n        padding: 10px 12px;\n        font-size: 13px;\n      }\n    }\n  \u003c\/style\u003e\n\u003cdiv class=\"rapidkeen-table-container\"\u003e\n\u003cp class=\"rapidkeen-intro\"\u003e\u003cspan style=\"color: rgb(0, 170, 255);\"\u003e\u003cstrong\u003eAluminum Alloy Tube\u003c\/strong\u003e\u003c\/span\u003e is a lightweight, high-strength structural material widely valued for its excellent corrosion resistance, superior machinability, and outstanding formability. Precision-engineered for industrial performance, our premium \u003cspan style=\"color: rgb(0, 170, 255);\"\u003e\u003cstrong\u003eAluminum Tubes, Hollow Round Tubes, and Custom Industrial Aluminum Tubes\u003c\/strong\u003e\u003c\/span\u003e deliver tight dimensional tolerances and consistent quality, making them the ideal choice for automation equipment, structural fabrication, electronic components, and automotive engineering.\u003c\/p\u003e\n\u003ctable class=\"rapidkeen-tech-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 15%;\"\u003eMaterial\u003c\/th\u003e\n\u003cth style=\"width: 22%;\"\u003eProduct Form\u003c\/th\u003e\n\u003cth style=\"width: 13%;\"\u003eComposition\u003c\/th\u003e\n\u003cth style=\"width: 25%;\"\u003eKey Characteristics\u003c\/th\u003e\n\u003cth style=\"width: 25%;\"\u003eTypical Applications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"grade-badge\"\u003ePremium Alloy\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"copper-type\"\u003eSeamless Aluminum Tube\u003c\/div\u003e\n\u003cdiv class=\"copper-type-sub\"\u003eIndustrial Grade Seamless Tube\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003eAl: Balance\u003cbr\u003eMg \u0026amp; Si: Core alloying elements\u003c\/td\u003e\n\u003ctd\u003eHigh structural strength with uniform wall thickness. Excellent corrosion resistance, good weldability, and suitable for anodizing, powder coating and other surface treatments.\u003c\/td\u003e\n\u003ctd\u003e\n\u003cul\u003e\n\u003cli\u003eIndustrial structural frames \u0026amp; supports\u003c\/li\u003e\n\u003cli\u003eAutomation equipment components\u003c\/li\u003e\n\u003cli\u003eArchitectural railing \u0026amp; decorative structures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"grade-badge\"\u003ePremium Alloy\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"copper-type\"\u003ePrecision Hollow Tube\u003c\/div\u003e\n\u003cdiv class=\"copper-type-sub\"\u003eTight Tolerance Round Tube\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003eAl: Balance\u003cbr\u003eMg \u0026amp; Si: Core alloying elements\u003c\/td\u003e\n\u003ctd\u003eUltra-tight dimensional tolerances with smooth inner \u0026amp; outer surfaces. Consistent roundness and excellent concentricity for precision fitting and assembly.\u003c\/td\u003e\n\u003ctd\u003e\n\u003cul\u003e\n\u003cli\u003eElectronic equipment housings \u0026amp; heat sinks\u003c\/li\u003e\n\u003cli\u003ePrecision instrumentation parts\u003c\/li\u003e\n\u003cli\u003ePneumatic \u0026amp; hydraulic system components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan class=\"grade-badge\"\u003ePremium Alloy\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv class=\"copper-type\"\u003eCustom Industrial Tube\u003c\/div\u003e\n\u003cdiv class=\"copper-type-sub\"\u003eCustom Fabrication Tube\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd\u003eAl: Balance\u003cbr\u003eMg \u0026amp; Si: Core alloying elements\u003c\/td\u003e\n\u003ctd\u003eFully customizable length, diameter and wall thickness. Superior machinability for drilling, bending, CNC milling and other secondary processing.\u003c\/td\u003e\n\u003ctd\u003e\n\u003cul\u003e\n\u003cli\u003eCustom mechanical parts \u0026amp; fixtures\u003c\/li\u003e\n\u003cli\u003eAutomotive lightweight components\u003c\/li\u003e\n\u003cli\u003eRobotics \u0026amp; automation assembly parts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","products":[{"product_id":"products-custom-industrial-aluminum-alloy-tubes-hollow-round-precision-tubing","title":"Aluminum Alloy Tube OD 5mm (0.2\")  custom","description":"\u003cstyle\u003e\n.rk-aluminum-detail-wrap {\n    width: 100%;\n    max-width: 1200px;\n    margin: 0 auto;\n    padding: 30px 20px;\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n    color: #333333;\n    line-height: 1.75;\n    box-sizing: border-box;\n}\n\n.rk-aluminum-detail-wrap h2 {\n    color: #005969;\n    font-size: 30px;\n    font-weight: 700;\n    margin: 0 0 20px 0;\n    padding-bottom: 12px;\n    border-bottom: 3px solid #d4af37;\n    display: inline-block;\n}\n\n.rk-aluminum-detail-wrap h3 {\n    color: #005969;\n    font-size: 22px;\n    font-weight: 600;\n    margin: 30px 0 15px 0;\n}\n\n.rk-aluminum-detail-wrap p {\n    font-size: 17px;\n    margin: 0 0 16px 0;\n    color: #3a3a3a;\n}\n\n.rk-highlight {\n    color: #00AAFF;\n    font-weight: 600;\n}\n\n.rk-gold-text {\n    color: #b87333;\n    font-weight: 600;\n}\n\n\/* 开篇介绍区 *\/\n.rk-intro-section {\n    background: linear-gradient(135deg, #f0f7fc 0%, #ffffff 100%);\n    padding: 35px 30px;\n    border-radius: 10px;\n    border-left: 5px solid #005969;\n    margin-bottom: 45px;\n}\n\n.rk-intro-section p {\n    font-size: 18px;\n}\n\n\/* 特性网格 *\/\n.rk-features-grid {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 25px;\n    margin: 30px 0 50px 0;\n}\n\n.rk-feature-card {\n    background: #ffffff;\n    border: 1px solid #9EC9F2;\n    border-radius: 8px;\n    padding: 25px;\n    transition: all 0.3s ease;\n}\n\n.rk-feature-card:hover {\n    box-shadow: 0 6px 20px rgba(0, 89, 105, 0.1);\n    border-color: #00AAFF;\n    transform: translateY(-2px);\n}\n\n.rk-feature-card h4 {\n    color: #005969;\n    font-size: 19px;\n    margin: 0 0 12px 0;\n    display: flex;\n    align-items: center;\n    gap: 10px;\n}\n\n.rk-feature-card h4::before {\n    content: \"\";\n    display: inline-block;\n    width: 8px;\n    height: 8px;\n    background: #d4af37;\n    border-radius: 50%;\n}\n\n.rk-feature-card p {\n    font-size: 16px;\n    margin: 0;\n    color: #555555;\n}\n\n\/* 应用场景区 *\/\n.rk-apps-section {\n    margin: 50px 0;\n}\n\n.rk-apps-grid {\n    display: grid;\n    grid-template-columns: repeat(3, 1fr);\n    gap: 20px;\n    margin-top: 30px;\n}\n\n.rk-app-card {\n    background: #f8fbfe;\n    border-top: 4px solid #00AAFF;\n    padding: 25px 20px;\n    border-radius: 6px;\n}\n\n.rk-app-card h4 {\n    color: #005969;\n    font-size: 18px;\n    margin: 0 0 12px 0;\n}\n\n.rk-app-card ul {\n    margin: 0;\n    padding-left: 20px;\n    font-size: 16px;\n    color: #555555;\n}\n\n.rk-app-card li {\n    margin-bottom: 6px;\n}\n\n\/* 定制与优势区 *\/\n.rk-advantage-box {\n    background: #005969;\n    color: #ffffff;\n    padding: 35px 30px;\n    border-radius: 10px;\n    margin: 50px 0;\n}\n\n.rk-advantage-box h3 {\n    color: #d4af37;\n    margin-top: 0;\n}\n\n.rk-advantage-box p {\n    color: #e8f4f8;\n    font-size: 17px;\n}\n\n.rk-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 15px 30px;\n    margin-top: 20px;\n}\n\n.rk-advantage-item {\n    font-size: 16px;\n    padding-left: 25px;\n    position: relative;\n}\n\n.rk-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n}\n\n\/* 底部品牌栏 *\/\n.rk-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 40px;\n}\n\n.rk-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n\n.rk-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n}\n\n\/* 响应式适配 *\/\n@media screen and (max-width: 992px) {\n    .rk-apps-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n}\n\n@media screen and (max-width: 768px) {\n    .rk-aluminum-detail-wrap {\n        padding: 20px 15px;\n    }\n    \n    .rk-aluminum-detail-wrap h2 {\n        font-size: 24px;\n    }\n    \n    .rk-aluminum-detail-wrap h3 {\n        font-size: 19px;\n    }\n    \n    .rk-aluminum-detail-wrap p,\n    .rk-feature-card p,\n    .rk-app-card li {\n        font-size: 15px;\n    }\n    \n    .rk-intro-section {\n        padding: 25px 20px;\n    }\n    \n    .rk-intro-section p {\n        font-size: 16px;\n    }\n    \n    .rk-features-grid,\n    .rk-advantage-list {\n        grid-template-columns: 1fr;\n        gap: 18px;\n    }\n    \n    .rk-apps-grid {\n        grid-template-columns: 1fr;\n    }\n    \n    .rk-advantage-box {\n        padding: 25px 20px;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-aluminum-detail-wrap\"\u003e\n\n    \u003c!-- 开篇介绍 --\u003e\n    \u003cdiv class=\"rk-intro-section\"\u003e\n        \u003ch2\u003ePremium Aluminum Alloy Tubes\u003c\/h2\u003e\n        \u003cp\u003e\u003cspan class=\"rk-highlight\"\u003eRapidKeen\u003c\/span\u003e supplies industrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. As a versatile heat-treatable alloy solution, our hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, making them a trusted choice for demanding industrial fabrication, precision engineering and lightweight structural applications.\u003c\/p\u003e\n        \u003cp\u003eWe produce seamless and precision-drawn aluminum tubes in a full range of outer diameters, wall thicknesses and custom lengths. Every tube is manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish, ready for direct assembly or secondary fabrication.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 核心特性 --\u003e\n    \u003ch3\u003eCore Performance Characteristics\u003c\/h3\u003e\n    \u003cdiv class=\"rk-features-grid\"\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eOutstanding Strength-to-Weight Ratio\u003c\/h4\u003e\n            \u003cp\u003eOur alloy tubes offer remarkable structural strength while remaining significantly lighter than steel and copper alternatives. This lightweight advantage reduces overall assembly weight, lowers transportation costs and improves energy efficiency — especially critical for automotive, robotics and aerospace-related applications.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n            \u003cp\u003eThe alloy composition forms a natural protective oxide layer when exposed to air, delivering reliable resistance to atmospheric corrosion, moisture and many common industrial chemicals. It performs well in both indoor and outdoor environments, maintaining structural integrity and surface appearance over extended service life.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eSuperior Machinability \u0026amp; Formability\u003c\/h4\u003e\n            \u003cp\u003eThis alloy grade is highly workable and responds exceptionally well to CNC machining, drilling, milling, bending, flaring and swaging operations. It produces clean, burr-free cuts and holds tight tolerances through complex fabrication processes, supporting high-volume production and custom one-off projects alike.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n            \u003cp\u003eThe tube surface accepts a wide range of decorative and functional finishes including anodizing, powder coating, polishing and sandblasting. Anodized layers form a uniform, hard and wear-resistant surface that enhances corrosion protection and provides a clean professional appearance for visible structural components.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n            \u003cp\u003eManufactured with precision extrusion and cold-drawing processes, our aluminum tubes maintain strict control over outer diameter, inner diameter and wall thickness. Excellent concentricity and consistent roundness ensure reliable fit in precision assemblies, pneumatic systems and mechanical linkage components.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eGood Thermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n            \u003cp\u003eAlongside structural performance, the material retains strong thermal conductivity ideal for heat sinks, cooling systems and thermal management components. It also provides reliable electrical conductivity for grounding elements, electrical housings and conductive structural parts.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 产品形态与规格 --\u003e\n    \u003ch3\u003eAvailable Product Forms \u0026amp; Specifications\u003c\/h3\u003e\n    \u003cp\u003e\u003cspan class=\"rk-gold-text\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n    \n    \u003cdiv class=\"rk-features-grid\"\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n            \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n            \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 应用场景 --\u003e\n    \u003cdiv class=\"rk-apps-section\"\u003e\n        \u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n        \u003cp\u003eOur aluminum alloy tubes are widely adopted across diverse industrial sectors. Below are the most common application areas we support:\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-apps-grid\"\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eAutomation \u0026amp; Robotics\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                    \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                    \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                    \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                    \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eAutomotive \u0026amp; Transportation\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                    \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                    \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                    \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                    \u003cli\u003eCooling system piping\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eElectronics \u0026amp; Thermal\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                    \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                    \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                    \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                    \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eArchitectural \u0026amp; Construction\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                    \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                    \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                    \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                    \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003ePrecision Engineering\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                    \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                    \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                    \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                    \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eGeneral Manufacturing\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                    \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                    \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                    \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                    \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 定制与优势 --\u003e\n    \u003cdiv class=\"rk-advantage-box\"\u003e\n        \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan style=\"color:#d4af37; font-weight:600;\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-advantage-list\"\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 底部品牌 --\u003e\n    \u003cdiv class=\"rk-brand-footer\"\u003e\n        \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n        \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 5mm (0.2\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43796431568955,"sku":null,"price":3.52,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43796431601723,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 3mm (0.12\") \/ 500mm 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relative;\n}\n\n.rk-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n}\n\n\/* 底部品牌栏 *\/\n.rk-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 40px;\n}\n\n.rk-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n\n.rk-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n}\n\n\/* 响应式适配 *\/\n@media screen and (max-width: 992px) {\n    .rk-apps-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n}\n\n@media screen and (max-width: 768px) {\n    .rk-aluminum-detail-wrap {\n        padding: 20px 15px;\n    }\n    \n    .rk-aluminum-detail-wrap h2 {\n        font-size: 24px;\n    }\n    \n    .rk-aluminum-detail-wrap h3 {\n        font-size: 19px;\n    }\n    \n    .rk-aluminum-detail-wrap p,\n    .rk-feature-card p,\n    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As a versatile heat-treatable alloy solution, our hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, making them a trusted choice for demanding industrial fabrication, precision engineering and lightweight structural applications.\u003c\/p\u003e\n        \u003cp\u003eWe produce seamless and precision-drawn aluminum tubes in a full range of outer diameters, wall thicknesses and custom lengths. Every tube is manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish, ready for direct assembly or secondary fabrication.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 核心特性 --\u003e\n    \u003ch3\u003eCore Performance Characteristics\u003c\/h3\u003e\n    \u003cdiv class=\"rk-features-grid\"\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eOutstanding Strength-to-Weight Ratio\u003c\/h4\u003e\n            \u003cp\u003eOur alloy tubes offer remarkable structural strength while remaining significantly lighter than steel and copper alternatives. This lightweight advantage reduces overall assembly weight, lowers transportation costs and improves energy efficiency — especially critical for automotive, robotics and aerospace-related applications.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n            \u003cp\u003eThe alloy composition forms a natural protective oxide layer when exposed to air, delivering reliable resistance to atmospheric corrosion, moisture and many common industrial chemicals. It performs well in both indoor and outdoor environments, maintaining structural integrity and surface appearance over extended service life.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eSuperior Machinability \u0026amp; Formability\u003c\/h4\u003e\n            \u003cp\u003eThis alloy grade is highly workable and responds exceptionally well to CNC machining, drilling, milling, bending, flaring and swaging operations. It produces clean, burr-free cuts and holds tight tolerances through complex fabrication processes, supporting high-volume production and custom one-off projects alike.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n            \u003cp\u003eThe tube surface accepts a wide range of decorative and functional finishes including anodizing, powder coating, polishing and sandblasting. Anodized layers form a uniform, hard and wear-resistant surface that enhances corrosion protection and provides a clean professional appearance for visible structural components.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n            \u003cp\u003eManufactured with precision extrusion and cold-drawing processes, our aluminum tubes maintain strict control over outer diameter, inner diameter and wall thickness. Excellent concentricity and consistent roundness ensure reliable fit in precision assemblies, pneumatic systems and mechanical linkage components.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eGood Thermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n            \u003cp\u003eAlongside structural performance, the material retains strong thermal conductivity ideal for heat sinks, cooling systems and thermal management components. It also provides reliable electrical conductivity for grounding elements, electrical housings and conductive structural parts.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 产品形态与规格 --\u003e\n    \u003ch3\u003eAvailable Product Forms \u0026amp; Specifications\u003c\/h3\u003e\n    \u003cp\u003e\u003cspan class=\"rk-gold-text\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n    \n    \u003cdiv class=\"rk-features-grid\"\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n            \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n            \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 应用场景 --\u003e\n    \u003cdiv class=\"rk-apps-section\"\u003e\n        \u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n        \u003cp\u003eOur aluminum alloy tubes are widely adopted across diverse industrial sectors. Below are the most common application areas we support:\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-apps-grid\"\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eAutomation \u0026amp; Robotics\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                    \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                    \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                    \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                    \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eAutomotive \u0026amp; Transportation\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                    \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                    \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                    \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                    \u003cli\u003eCooling system piping\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eElectronics \u0026amp; Thermal\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                    \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                    \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                    \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                    \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eArchitectural \u0026amp; Construction\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                    \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                    \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                    \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                    \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003ePrecision Engineering\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                    \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                    \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                    \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                    \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eGeneral Manufacturing\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                    \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                    \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                    \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                    \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 定制与优势 --\u003e\n    \u003cdiv class=\"rk-advantage-box\"\u003e\n        \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan style=\"color:#d4af37; font-weight:600;\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-advantage-list\"\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 底部品牌 --\u003e\n    \u003cdiv class=\"rk-brand-footer\"\u003e\n        \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n        \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 6mm (0.236\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43796864270395,"sku":null,"price":4.26,"currency_code":"USD","in_stock":true},{"title":"OD 6mm (0.236\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43796864237627,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 3mm (0.12\") \/ 500mm 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relative;\n}\n\n.rk-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n}\n\n\/* 底部品牌栏 *\/\n.rk-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 40px;\n}\n\n.rk-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n\n.rk-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n}\n\n\/* 响应式适配 *\/\n@media screen and (max-width: 992px) {\n    .rk-apps-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n}\n\n@media screen and (max-width: 768px) {\n    .rk-aluminum-detail-wrap {\n        padding: 20px 15px;\n    }\n    \n    .rk-aluminum-detail-wrap h2 {\n        font-size: 24px;\n    }\n    \n    .rk-aluminum-detail-wrap h3 {\n        font-size: 19px;\n    }\n    \n    .rk-aluminum-detail-wrap p,\n    .rk-feature-card p,\n    .rk-app-card li {\n        font-size: 15px;\n    }\n    \n    .rk-intro-section {\n        padding: 25px 20px;\n    }\n    \n    .rk-intro-section p {\n        font-size: 16px;\n    }\n    \n    .rk-features-grid,\n    .rk-advantage-list {\n        grid-template-columns: 1fr;\n        gap: 18px;\n    }\n    \n    .rk-apps-grid {\n        grid-template-columns: 1fr;\n    }\n    \n    .rk-advantage-box {\n        padding: 25px 20px;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-aluminum-detail-wrap\"\u003e\n\n    \u003c!-- 开篇介绍 --\u003e\n    \u003cdiv class=\"rk-intro-section\"\u003e\n        \u003ch2\u003ePremium Aluminum Alloy Tubes\u003c\/h2\u003e\n        \u003cp\u003e\u003cspan class=\"rk-highlight\"\u003eRapidKeen\u003c\/span\u003e supplies industrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. As a versatile heat-treatable alloy solution, our hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, making them a trusted choice for demanding industrial fabrication, precision engineering and lightweight structural applications.\u003c\/p\u003e\n        \u003cp\u003eWe produce seamless and precision-drawn aluminum tubes in a full range of outer diameters, wall thicknesses and custom lengths. Every tube is manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish, ready for direct assembly or secondary fabrication.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 核心特性 --\u003e\n    \u003ch3\u003eCore Performance Characteristics\u003c\/h3\u003e\n    \u003cdiv class=\"rk-features-grid\"\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eOutstanding Strength-to-Weight Ratio\u003c\/h4\u003e\n            \u003cp\u003eOur alloy tubes offer remarkable structural strength while remaining significantly lighter than steel and copper alternatives. This lightweight advantage reduces overall assembly weight, lowers transportation costs and improves energy efficiency — especially critical for automotive, robotics and aerospace-related applications.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n            \u003cp\u003eThe alloy composition forms a natural protective oxide layer when exposed to air, delivering reliable resistance to atmospheric corrosion, moisture and many common industrial chemicals. It performs well in both indoor and outdoor environments, maintaining structural integrity and surface appearance over extended service life.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eSuperior Machinability \u0026amp; Formability\u003c\/h4\u003e\n            \u003cp\u003eThis alloy grade is highly workable and responds exceptionally well to CNC machining, drilling, milling, bending, flaring and swaging operations. It produces clean, burr-free cuts and holds tight tolerances through complex fabrication processes, supporting high-volume production and custom one-off projects alike.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n            \u003cp\u003eThe tube surface accepts a wide range of decorative and functional finishes including anodizing, powder coating, polishing and sandblasting. Anodized layers form a uniform, hard and wear-resistant surface that enhances corrosion protection and provides a clean professional appearance for visible structural components.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n            \u003cp\u003eManufactured with precision extrusion and cold-drawing processes, our aluminum tubes maintain strict control over outer diameter, inner diameter and wall thickness. Excellent concentricity and consistent roundness ensure reliable fit in precision assemblies, pneumatic systems and mechanical linkage components.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eGood Thermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n            \u003cp\u003eAlongside structural performance, the material retains strong thermal conductivity ideal for heat sinks, cooling systems and thermal management components. It also provides reliable electrical conductivity for grounding elements, electrical housings and conductive structural parts.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 产品形态与规格 --\u003e\n    \u003ch3\u003eAvailable Product Forms \u0026amp; Specifications\u003c\/h3\u003e\n    \u003cp\u003e\u003cspan class=\"rk-gold-text\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n    \n    \u003cdiv class=\"rk-features-grid\"\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n            \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n            \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 应用场景 --\u003e\n    \u003cdiv class=\"rk-apps-section\"\u003e\n        \u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n        \u003cp\u003eOur aluminum alloy tubes are widely adopted across diverse industrial sectors. Below are the most common application areas we support:\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-apps-grid\"\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eAutomation \u0026amp; Robotics\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                    \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                    \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                    \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                    \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eAutomotive \u0026amp; Transportation\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                    \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                    \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                    \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                    \u003cli\u003eCooling system piping\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eElectronics \u0026amp; Thermal\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                    \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                    \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                    \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                    \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eArchitectural \u0026amp; Construction\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                    \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                    \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                    \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                    \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003ePrecision Engineering\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                    \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                    \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                    \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                    \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eGeneral Manufacturing\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                    \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                    \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                    \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                    \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 定制与优势 --\u003e\n    \u003cdiv class=\"rk-advantage-box\"\u003e\n        \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan style=\"color:#d4af37; font-weight:600;\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-advantage-list\"\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 底部品牌 --\u003e\n    \u003cdiv class=\"rk-brand-footer\"\u003e\n        \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n        \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 7mm (0.276\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43796876361787,"sku":null,"price":4.27,"currency_code":"USD","in_stock":true},{"title":"OD 7mm (0.276\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43796876394555,"sku":null,"price":4.88,"currency_code":"USD","in_stock":true},{"title":"OD 7mm (0.276\") \/ WT 3mm (0.12\") \/ 500mm 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(19.7\")","offer_id":43796880621627,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 60mm (2.362\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43796880654395,"sku":null,"price":30.5,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43796880687163,"sku":null,"price":37.22,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43796880719931,"sku":null,"price":50.66,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43796880752699,"sku":null,"price":58.94,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43796880785467,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43796880818235,"sku":null,"price":34.88,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43796880851003,"sku":null,"price":50.4,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43796880883771,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43796880916539,"sku":null,"price":79.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/hollowaluminumtube.webp?v=1784130024"},{"product_id":"products-custom-industrial-aluminum-alloy-tubes-hollow-round-precision-tubing-3","title":"Aluminum Alloy Tube OD 8mm (0.315\")  custom","description":"\u003cstyle\u003e\n.rk-aluminum-detail-wrap {\n    width: 100%;\n    max-width: 1200px;\n    margin: 0 auto;\n    padding: 30px 20px;\n    font-family: 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  font-size: 18px;\n}\n\n\/* 特性网格 *\/\n.rk-features-grid {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 25px;\n    margin: 30px 0 50px 0;\n}\n\n.rk-feature-card {\n    background: #ffffff;\n    border: 1px solid #9EC9F2;\n    border-radius: 8px;\n    padding: 25px;\n    transition: all 0.3s ease;\n}\n\n.rk-feature-card:hover {\n    box-shadow: 0 6px 20px rgba(0, 89, 105, 0.1);\n    border-color: #00AAFF;\n    transform: translateY(-2px);\n}\n\n.rk-feature-card h4 {\n    color: #005969;\n    font-size: 19px;\n    margin: 0 0 12px 0;\n    display: flex;\n    align-items: center;\n    gap: 10px;\n}\n\n.rk-feature-card h4::before {\n    content: \"\";\n    display: inline-block;\n    width: 8px;\n    height: 8px;\n    background: #d4af37;\n    border-radius: 50%;\n}\n\n.rk-feature-card p {\n    font-size: 16px;\n    margin: 0;\n    color: #555555;\n}\n\n\/* 应用场景区 *\/\n.rk-apps-section {\n    margin: 50px 0;\n}\n\n.rk-apps-grid {\n    display: grid;\n    grid-template-columns: repeat(3, 1fr);\n    gap: 20px;\n    margin-top: 30px;\n}\n\n.rk-app-card {\n    background: #f8fbfe;\n    border-top: 4px solid #00AAFF;\n    padding: 25px 20px;\n    border-radius: 6px;\n}\n\n.rk-app-card h4 {\n    color: #005969;\n    font-size: 18px;\n    margin: 0 0 12px 0;\n}\n\n.rk-app-card ul {\n    margin: 0;\n    padding-left: 20px;\n    font-size: 16px;\n    color: #555555;\n}\n\n.rk-app-card li {\n    margin-bottom: 6px;\n}\n\n\/* 定制与优势区 *\/\n.rk-advantage-box {\n    background: #005969;\n    color: #ffffff;\n    padding: 35px 30px;\n    border-radius: 10px;\n    margin: 50px 0;\n}\n\n.rk-advantage-box h3 {\n    color: #d4af37;\n    margin-top: 0;\n}\n\n.rk-advantage-box p {\n    color: #e8f4f8;\n    font-size: 17px;\n}\n\n.rk-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 15px 30px;\n    margin-top: 20px;\n}\n\n.rk-advantage-item {\n    font-size: 16px;\n    padding-left: 25px;\n    position: relative;\n}\n\n.rk-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n}\n\n\/* 底部品牌栏 *\/\n.rk-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 40px;\n}\n\n.rk-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n\n.rk-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n}\n\n\/* 响应式适配 *\/\n@media screen and (max-width: 992px) {\n    .rk-apps-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n}\n\n@media screen and (max-width: 768px) {\n    .rk-aluminum-detail-wrap {\n        padding: 20px 15px;\n    }\n    \n    .rk-aluminum-detail-wrap h2 {\n        font-size: 24px;\n    }\n    \n    .rk-aluminum-detail-wrap h3 {\n        font-size: 19px;\n    }\n    \n    .rk-aluminum-detail-wrap p,\n    .rk-feature-card p,\n    .rk-app-card li {\n        font-size: 15px;\n    }\n    \n    .rk-intro-section {\n        padding: 25px 20px;\n    }\n    \n    .rk-intro-section p {\n        font-size: 16px;\n    }\n    \n    .rk-features-grid,\n    .rk-advantage-list {\n        grid-template-columns: 1fr;\n        gap: 18px;\n    }\n    \n    .rk-apps-grid {\n        grid-template-columns: 1fr;\n    }\n    \n    .rk-advantage-box {\n        padding: 25px 20px;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-aluminum-detail-wrap\"\u003e\n\n    \u003c!-- 开篇介绍 --\u003e\n    \u003cdiv class=\"rk-intro-section\"\u003e\n        \u003ch2\u003ePremium Aluminum Alloy Tubes\u003c\/h2\u003e\n        \u003cp\u003e\u003cspan class=\"rk-highlight\"\u003eRapidKeen\u003c\/span\u003e supplies industrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. As a versatile heat-treatable alloy solution, our hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, making them a trusted choice for demanding industrial fabrication, precision engineering and lightweight structural applications.\u003c\/p\u003e\n        \u003cp\u003eWe produce seamless and precision-drawn aluminum tubes in a full range of outer diameters, wall thicknesses and custom lengths. Every tube is manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish, ready for direct assembly or secondary fabrication.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 核心特性 --\u003e\n    \u003ch3\u003eCore Performance Characteristics\u003c\/h3\u003e\n    \u003cdiv class=\"rk-features-grid\"\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eOutstanding Strength-to-Weight Ratio\u003c\/h4\u003e\n            \u003cp\u003eOur alloy tubes offer remarkable structural strength while remaining significantly lighter than steel and copper alternatives. This lightweight advantage reduces overall assembly weight, lowers transportation costs and improves energy efficiency — especially critical for automotive, robotics and aerospace-related applications.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n            \u003cp\u003eThe alloy composition forms a natural protective oxide layer when exposed to air, delivering reliable resistance to atmospheric corrosion, moisture and many common industrial chemicals. It performs well in both indoor and outdoor environments, maintaining structural integrity and surface appearance over extended service life.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eSuperior Machinability \u0026amp; Formability\u003c\/h4\u003e\n            \u003cp\u003eThis alloy grade is highly workable and responds exceptionally well to CNC machining, drilling, milling, bending, flaring and swaging operations. It produces clean, burr-free cuts and holds tight tolerances through complex fabrication processes, supporting high-volume production and custom one-off projects alike.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n            \u003cp\u003eThe tube surface accepts a wide range of decorative and functional finishes including anodizing, powder coating, polishing and sandblasting. Anodized layers form a uniform, hard and wear-resistant surface that enhances corrosion protection and provides a clean professional appearance for visible structural components.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n            \u003cp\u003eManufactured with precision extrusion and cold-drawing processes, our aluminum tubes maintain strict control over outer diameter, inner diameter and wall thickness. Excellent concentricity and consistent roundness ensure reliable fit in precision assemblies, pneumatic systems and mechanical linkage components.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eGood Thermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n            \u003cp\u003eAlongside structural performance, the material retains strong thermal conductivity ideal for heat sinks, cooling systems and thermal management components. It also provides reliable electrical conductivity for grounding elements, electrical housings and conductive structural parts.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 产品形态与规格 --\u003e\n    \u003ch3\u003eAvailable Product Forms \u0026amp; Specifications\u003c\/h3\u003e\n    \u003cp\u003e\u003cspan class=\"rk-gold-text\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n    \n    \u003cdiv class=\"rk-features-grid\"\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n            \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n            \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 应用场景 --\u003e\n    \u003cdiv class=\"rk-apps-section\"\u003e\n        \u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n        \u003cp\u003eOur aluminum alloy tubes are widely adopted across diverse industrial sectors. Below are the most common application areas we support:\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-apps-grid\"\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eAutomation \u0026amp; Robotics\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                    \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                    \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                    \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                    \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eAutomotive \u0026amp; Transportation\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                    \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                    \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                    \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                    \u003cli\u003eCooling system piping\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eElectronics \u0026amp; Thermal\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                    \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                    \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                    \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                    \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eArchitectural \u0026amp; Construction\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                    \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                    \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                    \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                    \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003ePrecision Engineering\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                    \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                    \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                    \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                    \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eGeneral Manufacturing\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                    \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                    \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                    \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                    \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 定制与优势 --\u003e\n    \u003cdiv class=\"rk-advantage-box\"\u003e\n        \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan style=\"color:#d4af37; font-weight:600;\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-advantage-list\"\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n            \u003cdiv 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.rk-app-card li {\n        font-size: 15px;\n    }\n    \n    .rk-intro-section {\n        padding: 25px 20px;\n    }\n    \n    .rk-intro-section p {\n        font-size: 16px;\n    }\n    \n    .rk-features-grid,\n    .rk-advantage-list {\n        grid-template-columns: 1fr;\n        gap: 18px;\n    }\n    \n    .rk-apps-grid {\n        grid-template-columns: 1fr;\n    }\n    \n    .rk-advantage-box {\n        padding: 25px 20px;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-aluminum-detail-wrap\"\u003e\n\n    \u003c!-- 开篇介绍 --\u003e\n    \u003cdiv class=\"rk-intro-section\"\u003e\n        \u003ch2\u003ePremium Aluminum Alloy Tubes\u003c\/h2\u003e\n        \u003cp\u003e\u003cspan class=\"rk-highlight\"\u003eRapidKeen\u003c\/span\u003e supplies industrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. As a versatile heat-treatable alloy solution, our hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, making them a trusted choice for demanding industrial fabrication, precision engineering and lightweight structural applications.\u003c\/p\u003e\n        \u003cp\u003eWe produce seamless and precision-drawn aluminum tubes in a full range of outer diameters, wall thicknesses and custom lengths. Every tube is manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish, ready for direct assembly or secondary fabrication.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 核心特性 --\u003e\n    \u003ch3\u003eCore Performance Characteristics\u003c\/h3\u003e\n    \u003cdiv class=\"rk-features-grid\"\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eOutstanding Strength-to-Weight Ratio\u003c\/h4\u003e\n            \u003cp\u003eOur alloy tubes offer remarkable structural strength while remaining significantly lighter than steel and copper alternatives. This lightweight advantage reduces overall assembly weight, lowers transportation costs and improves energy efficiency — especially critical for automotive, robotics and aerospace-related applications.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n            \u003cp\u003eThe alloy composition forms a natural protective oxide layer when exposed to air, delivering reliable resistance to atmospheric corrosion, moisture and many common industrial chemicals. It performs well in both indoor and outdoor environments, maintaining structural integrity and surface appearance over extended service life.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eSuperior Machinability \u0026amp; Formability\u003c\/h4\u003e\n            \u003cp\u003eThis alloy grade is highly workable and responds exceptionally well to CNC machining, drilling, milling, bending, flaring and swaging operations. It produces clean, burr-free cuts and holds tight tolerances through complex fabrication processes, supporting high-volume production and custom one-off projects alike.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n            \u003cp\u003eThe tube surface accepts a wide range of decorative and functional finishes including anodizing, powder coating, polishing and sandblasting. Anodized layers form a uniform, hard and wear-resistant surface that enhances corrosion protection and provides a clean professional appearance for visible structural components.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n            \u003cp\u003eManufactured with precision extrusion and cold-drawing processes, our aluminum tubes maintain strict control over outer diameter, inner diameter and wall thickness. Excellent concentricity and consistent roundness ensure reliable fit in precision assemblies, pneumatic systems and mechanical linkage components.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eGood Thermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n            \u003cp\u003eAlongside structural performance, the material retains strong thermal conductivity ideal for heat sinks, cooling systems and thermal management components. It also provides reliable electrical conductivity for grounding elements, electrical housings and conductive structural parts.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 产品形态与规格 --\u003e\n    \u003ch3\u003eAvailable Product Forms \u0026amp; Specifications\u003c\/h3\u003e\n    \u003cp\u003e\u003cspan class=\"rk-gold-text\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n    \n    \u003cdiv class=\"rk-features-grid\"\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n            \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n            \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 应用场景 --\u003e\n    \u003cdiv class=\"rk-apps-section\"\u003e\n        \u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n        \u003cp\u003eOur aluminum alloy tubes are widely adopted across diverse industrial sectors. Below are the most common application areas we support:\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-apps-grid\"\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eAutomation \u0026amp; Robotics\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                    \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                    \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                    \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                    \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eAutomotive \u0026amp; Transportation\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                    \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                    \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                    \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                    \u003cli\u003eCooling system piping\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eElectronics \u0026amp; Thermal\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                    \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                    \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                    \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                    \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eArchitectural \u0026amp; Construction\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                    \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                    \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                    \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                    \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003ePrecision Engineering\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                    \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                    \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                    \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                    \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eGeneral Manufacturing\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                    \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                    \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                    \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                    \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 定制与优势 --\u003e\n    \u003cdiv class=\"rk-advantage-box\"\u003e\n        \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan style=\"color:#d4af37; font-weight:600;\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-advantage-list\"\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 底部品牌 --\u003e\n    \u003cdiv class=\"rk-brand-footer\"\u003e\n        \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n        \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 9mm (0.354\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43796906639419,"sku":null,"price":4.88,"currency_code":"USD","in_stock":true},{"title":"OD 9mm (0.354\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43796906672187,"sku":null,"price":6.12,"currency_code":"USD","in_stock":true},{"title":"OD 9mm (0.354\") \/ WT 3mm (0.12\") \/ 500mm 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relative;\n}\n\n.rk-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n}\n\n\/* 底部品牌栏 *\/\n.rk-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 40px;\n}\n\n.rk-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n\n.rk-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n}\n\n\/* 响应式适配 *\/\n@media screen and (max-width: 992px) {\n    .rk-apps-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n}\n\n@media screen and (max-width: 768px) {\n    .rk-aluminum-detail-wrap {\n        padding: 20px 15px;\n    }\n    \n    .rk-aluminum-detail-wrap h2 {\n        font-size: 24px;\n    }\n    \n    .rk-aluminum-detail-wrap h3 {\n        font-size: 19px;\n    }\n    \n    .rk-aluminum-detail-wrap p,\n    .rk-feature-card p,\n    .rk-app-card li {\n        font-size: 15px;\n    }\n    \n    .rk-intro-section {\n        padding: 25px 20px;\n    }\n    \n    .rk-intro-section p {\n        font-size: 16px;\n    }\n    \n    .rk-features-grid,\n    .rk-advantage-list {\n        grid-template-columns: 1fr;\n        gap: 18px;\n    }\n    \n    .rk-apps-grid {\n        grid-template-columns: 1fr;\n    }\n    \n    .rk-advantage-box {\n        padding: 25px 20px;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-aluminum-detail-wrap\"\u003e\n\n    \u003c!-- 开篇介绍 --\u003e\n    \u003cdiv class=\"rk-intro-section\"\u003e\n        \u003ch2\u003ePremium Aluminum Alloy Tubes\u003c\/h2\u003e\n        \u003cp\u003e\u003cspan class=\"rk-highlight\"\u003eRapidKeen\u003c\/span\u003e supplies industrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. As a versatile heat-treatable alloy solution, our hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, making them a trusted choice for demanding industrial fabrication, precision engineering and lightweight structural applications.\u003c\/p\u003e\n        \u003cp\u003eWe produce seamless and precision-drawn aluminum tubes in a full range of outer diameters, wall thicknesses and custom lengths. Every tube is manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish, ready for direct assembly or secondary fabrication.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 核心特性 --\u003e\n    \u003ch3\u003eCore Performance Characteristics\u003c\/h3\u003e\n    \u003cdiv class=\"rk-features-grid\"\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eOutstanding Strength-to-Weight Ratio\u003c\/h4\u003e\n            \u003cp\u003eOur alloy tubes offer remarkable structural strength while remaining significantly lighter than steel and copper alternatives. This lightweight advantage reduces overall assembly weight, lowers transportation costs and improves energy efficiency — especially critical for automotive, robotics and aerospace-related applications.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n            \u003cp\u003eThe alloy composition forms a natural protective oxide layer when exposed to air, delivering reliable resistance to atmospheric corrosion, moisture and many common industrial chemicals. It performs well in both indoor and outdoor environments, maintaining structural integrity and surface appearance over extended service life.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eSuperior Machinability \u0026amp; Formability\u003c\/h4\u003e\n            \u003cp\u003eThis alloy grade is highly workable and responds exceptionally well to CNC machining, drilling, milling, bending, flaring and swaging operations. It produces clean, burr-free cuts and holds tight tolerances through complex fabrication processes, supporting high-volume production and custom one-off projects alike.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n            \u003cp\u003eThe tube surface accepts a wide range of decorative and functional finishes including anodizing, powder coating, polishing and sandblasting. Anodized layers form a uniform, hard and wear-resistant surface that enhances corrosion protection and provides a clean professional appearance for visible structural components.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n            \u003cp\u003eManufactured with precision extrusion and cold-drawing processes, our aluminum tubes maintain strict control over outer diameter, inner diameter and wall thickness. Excellent concentricity and consistent roundness ensure reliable fit in precision assemblies, pneumatic systems and mechanical linkage components.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eGood Thermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n            \u003cp\u003eAlongside structural performance, the material retains strong thermal conductivity ideal for heat sinks, cooling systems and thermal management components. It also provides reliable electrical conductivity for grounding elements, electrical housings and conductive structural parts.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 产品形态与规格 --\u003e\n    \u003ch3\u003eAvailable Product Forms \u0026amp; Specifications\u003c\/h3\u003e\n    \u003cp\u003e\u003cspan class=\"rk-gold-text\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n    \n    \u003cdiv class=\"rk-features-grid\"\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n            \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n            \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 应用场景 --\u003e\n    \u003cdiv class=\"rk-apps-section\"\u003e\n        \u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n        \u003cp\u003eOur aluminum alloy tubes are widely adopted across diverse industrial sectors. Below are the most common application areas we support:\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-apps-grid\"\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eAutomation \u0026amp; Robotics\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                    \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                    \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                    \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                    \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eAutomotive \u0026amp; Transportation\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                    \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                    \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                    \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                    \u003cli\u003eCooling system piping\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eElectronics \u0026amp; Thermal\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                    \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                    \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                    \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                    \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eArchitectural \u0026amp; Construction\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                    \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                    \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                    \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                    \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003ePrecision Engineering\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                    \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                    \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                    \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                    \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eGeneral Manufacturing\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                    \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                    \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                    \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                    \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 定制与优势 --\u003e\n    \u003cdiv class=\"rk-advantage-box\"\u003e\n        \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan style=\"color:#d4af37; font-weight:600;\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-advantage-list\"\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 底部品牌 --\u003e\n    \u003cdiv class=\"rk-brand-footer\"\u003e\n        \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n        \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 10mm (0.394\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43796918468667,"sku":null,"price":4.98,"currency_code":"USD","in_stock":true},{"title":"OD 10mm (0.394\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43796918501435,"sku":null,"price":6.22,"currency_code":"USD","in_stock":true},{"title":"OD 10mm (0.394\") \/ WT 3mm (0.12\") \/ 500mm 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(19.7\")","offer_id":43796922433595,"sku":null,"price":34.88,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43796922466363,"sku":null,"price":50.4,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43796922499131,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43796922531899,"sku":null,"price":79.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/hollowaluminumtube.webp?v=1784130024"},{"product_id":"products-custom-industrial-aluminum-alloy-tubes-hollow-round-precision-tubing-6","title":"Aluminum Alloy Tube OD 12mm (0.472\")  custom","description":"\u003cstyle\u003e\n.rk-aluminum-detail-wrap {\n    width: 100%;\n    max-width: 1200px;\n    margin: 0 auto;\n    padding: 30px 20px;\n    font-family: 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  font-size: 18px;\n}\n\n\/* 特性网格 *\/\n.rk-features-grid {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 25px;\n    margin: 30px 0 50px 0;\n}\n\n.rk-feature-card {\n    background: #ffffff;\n    border: 1px solid #9EC9F2;\n    border-radius: 8px;\n    padding: 25px;\n    transition: all 0.3s ease;\n}\n\n.rk-feature-card:hover {\n    box-shadow: 0 6px 20px rgba(0, 89, 105, 0.1);\n    border-color: #00AAFF;\n    transform: translateY(-2px);\n}\n\n.rk-feature-card h4 {\n    color: #005969;\n    font-size: 19px;\n    margin: 0 0 12px 0;\n    display: flex;\n    align-items: center;\n    gap: 10px;\n}\n\n.rk-feature-card h4::before {\n    content: \"\";\n    display: inline-block;\n    width: 8px;\n    height: 8px;\n    background: #d4af37;\n    border-radius: 50%;\n}\n\n.rk-feature-card p {\n    font-size: 16px;\n    margin: 0;\n    color: #555555;\n}\n\n\/* 应用场景区 *\/\n.rk-apps-section {\n    margin: 50px 0;\n}\n\n.rk-apps-grid {\n    display: grid;\n    grid-template-columns: repeat(3, 1fr);\n    gap: 20px;\n    margin-top: 30px;\n}\n\n.rk-app-card {\n    background: #f8fbfe;\n    border-top: 4px solid #00AAFF;\n    padding: 25px 20px;\n    border-radius: 6px;\n}\n\n.rk-app-card h4 {\n    color: #005969;\n    font-size: 18px;\n    margin: 0 0 12px 0;\n}\n\n.rk-app-card ul {\n    margin: 0;\n    padding-left: 20px;\n    font-size: 16px;\n    color: #555555;\n}\n\n.rk-app-card li {\n    margin-bottom: 6px;\n}\n\n\/* 定制与优势区 *\/\n.rk-advantage-box {\n    background: #005969;\n    color: #ffffff;\n    padding: 35px 30px;\n    border-radius: 10px;\n    margin: 50px 0;\n}\n\n.rk-advantage-box h3 {\n    color: #d4af37;\n    margin-top: 0;\n}\n\n.rk-advantage-box p {\n    color: #e8f4f8;\n    font-size: 17px;\n}\n\n.rk-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 15px 30px;\n    margin-top: 20px;\n}\n\n.rk-advantage-item {\n    font-size: 16px;\n    padding-left: 25px;\n    position: relative;\n}\n\n.rk-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n}\n\n\/* 底部品牌栏 *\/\n.rk-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 40px;\n}\n\n.rk-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n\n.rk-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n}\n\n\/* 响应式适配 *\/\n@media screen and (max-width: 992px) {\n    .rk-apps-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n}\n\n@media screen and (max-width: 768px) {\n    .rk-aluminum-detail-wrap {\n        padding: 20px 15px;\n    }\n    \n    .rk-aluminum-detail-wrap h2 {\n        font-size: 24px;\n    }\n    \n    .rk-aluminum-detail-wrap h3 {\n        font-size: 19px;\n    }\n    \n    .rk-aluminum-detail-wrap p,\n    .rk-feature-card p,\n    .rk-app-card li {\n        font-size: 15px;\n    }\n    \n    .rk-intro-section {\n        padding: 25px 20px;\n    }\n    \n    .rk-intro-section p {\n        font-size: 16px;\n    }\n    \n    .rk-features-grid,\n    .rk-advantage-list {\n        grid-template-columns: 1fr;\n        gap: 18px;\n    }\n    \n    .rk-apps-grid {\n        grid-template-columns: 1fr;\n    }\n    \n    .rk-advantage-box {\n        padding: 25px 20px;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-aluminum-detail-wrap\"\u003e\n\n    \u003c!-- 开篇介绍 --\u003e\n    \u003cdiv class=\"rk-intro-section\"\u003e\n        \u003ch2\u003ePremium Aluminum Alloy Tubes\u003c\/h2\u003e\n        \u003cp\u003e\u003cspan class=\"rk-highlight\"\u003eRapidKeen\u003c\/span\u003e supplies industrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. As a versatile heat-treatable alloy solution, our hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, making them a trusted choice for demanding industrial fabrication, precision engineering and lightweight structural applications.\u003c\/p\u003e\n        \u003cp\u003eWe produce seamless and precision-drawn aluminum tubes in a full range of outer diameters, wall thicknesses and custom lengths. Every tube is manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish, ready for direct assembly or secondary fabrication.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 核心特性 --\u003e\n    \u003ch3\u003eCore Performance Characteristics\u003c\/h3\u003e\n    \u003cdiv class=\"rk-features-grid\"\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eOutstanding Strength-to-Weight Ratio\u003c\/h4\u003e\n            \u003cp\u003eOur alloy tubes offer remarkable structural strength while remaining significantly lighter than steel and copper alternatives. This lightweight advantage reduces overall assembly weight, lowers transportation costs and improves energy efficiency — especially critical for automotive, robotics and aerospace-related applications.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n            \u003cp\u003eThe alloy composition forms a natural protective oxide layer when exposed to air, delivering reliable resistance to atmospheric corrosion, moisture and many common industrial chemicals. It performs well in both indoor and outdoor environments, maintaining structural integrity and surface appearance over extended service life.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eSuperior Machinability \u0026amp; Formability\u003c\/h4\u003e\n            \u003cp\u003eThis alloy grade is highly workable and responds exceptionally well to CNC machining, drilling, milling, bending, flaring and swaging operations. It produces clean, burr-free cuts and holds tight tolerances through complex fabrication processes, supporting high-volume production and custom one-off projects alike.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n            \u003cp\u003eThe tube surface accepts a wide range of decorative and functional finishes including anodizing, powder coating, polishing and sandblasting. Anodized layers form a uniform, hard and wear-resistant surface that enhances corrosion protection and provides a clean professional appearance for visible structural components.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n            \u003cp\u003eManufactured with precision extrusion and cold-drawing processes, our aluminum tubes maintain strict control over outer diameter, inner diameter and wall thickness. Excellent concentricity and consistent roundness ensure reliable fit in precision assemblies, pneumatic systems and mechanical linkage components.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eGood Thermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n            \u003cp\u003eAlongside structural performance, the material retains strong thermal conductivity ideal for heat sinks, cooling systems and thermal management components. It also provides reliable electrical conductivity for grounding elements, electrical housings and conductive structural parts.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 产品形态与规格 --\u003e\n    \u003ch3\u003eAvailable Product Forms \u0026amp; Specifications\u003c\/h3\u003e\n    \u003cp\u003e\u003cspan class=\"rk-gold-text\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n    \n    \u003cdiv class=\"rk-features-grid\"\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n            \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n            \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 应用场景 --\u003e\n    \u003cdiv class=\"rk-apps-section\"\u003e\n        \u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n        \u003cp\u003eOur aluminum alloy tubes are widely adopted across diverse industrial sectors. Below are the most common application areas we support:\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-apps-grid\"\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eAutomation \u0026amp; Robotics\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                    \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                    \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                    \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                    \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eAutomotive \u0026amp; Transportation\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                    \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                    \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                    \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                    \u003cli\u003eCooling system piping\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eElectronics \u0026amp; Thermal\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                    \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                    \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                    \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                    \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eArchitectural \u0026amp; Construction\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                    \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                    \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                    \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                    \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003ePrecision Engineering\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                    \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                    \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                    \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                    \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eGeneral Manufacturing\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                    \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                    \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                    \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                    \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 定制与优势 --\u003e\n    \u003cdiv class=\"rk-advantage-box\"\u003e\n        \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan style=\"color:#d4af37; font-weight:600;\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-advantage-list\"\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 底部品牌 --\u003e\n    \u003cdiv class=\"rk-brand-footer\"\u003e\n        \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n        \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 12mm (0.472\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43796928331835,"sku":null,"price":5.5,"currency_code":"USD","in_stock":true},{"title":"OD 12mm (0.472\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43796928364603,"sku":null,"price":6.74,"currency_code":"USD","in_stock":true},{"title":"OD 12mm (0.472\") \/ WT 3mm (0.12\") \/ 500mm 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.rk-app-card li {\n        font-size: 15px;\n    }\n    \n    .rk-intro-section {\n        padding: 25px 20px;\n    }\n    \n    .rk-intro-section p {\n        font-size: 16px;\n    }\n    \n    .rk-features-grid,\n    .rk-advantage-list {\n        grid-template-columns: 1fr;\n        gap: 18px;\n    }\n    \n    .rk-apps-grid {\n        grid-template-columns: 1fr;\n    }\n    \n    .rk-advantage-box {\n        padding: 25px 20px;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-aluminum-detail-wrap\"\u003e\n\n    \u003c!-- 开篇介绍 --\u003e\n    \u003cdiv class=\"rk-intro-section\"\u003e\n        \u003ch2\u003ePremium Aluminum Alloy Tubes\u003c\/h2\u003e\n        \u003cp\u003e\u003cspan class=\"rk-highlight\"\u003eRapidKeen\u003c\/span\u003e supplies industrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. As a versatile heat-treatable alloy solution, our hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, making them a trusted choice for demanding industrial fabrication, precision engineering and lightweight structural applications.\u003c\/p\u003e\n        \u003cp\u003eWe produce seamless and precision-drawn aluminum tubes in a full range of outer diameters, wall thicknesses and custom lengths. Every tube is manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish, ready for direct assembly or secondary fabrication.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 核心特性 --\u003e\n    \u003ch3\u003eCore Performance Characteristics\u003c\/h3\u003e\n    \u003cdiv class=\"rk-features-grid\"\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eOutstanding Strength-to-Weight Ratio\u003c\/h4\u003e\n            \u003cp\u003eOur alloy tubes offer remarkable structural strength while remaining significantly lighter than steel and copper alternatives. This lightweight advantage reduces overall assembly weight, lowers transportation costs and improves energy efficiency — especially critical for automotive, robotics and aerospace-related applications.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n            \u003cp\u003eThe alloy composition forms a natural protective oxide layer when exposed to air, delivering reliable resistance to atmospheric corrosion, moisture and many common industrial chemicals. It performs well in both indoor and outdoor environments, maintaining structural integrity and surface appearance over extended service life.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eSuperior Machinability \u0026amp; Formability\u003c\/h4\u003e\n            \u003cp\u003eThis alloy grade is highly workable and responds exceptionally well to CNC machining, drilling, milling, bending, flaring and swaging operations. It produces clean, burr-free cuts and holds tight tolerances through complex fabrication processes, supporting high-volume production and custom one-off projects alike.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n            \u003cp\u003eThe tube surface accepts a wide range of decorative and functional finishes including anodizing, powder coating, polishing and sandblasting. Anodized layers form a uniform, hard and wear-resistant surface that enhances corrosion protection and provides a clean professional appearance for visible structural components.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n            \u003cp\u003eManufactured with precision extrusion and cold-drawing processes, our aluminum tubes maintain strict control over outer diameter, inner diameter and wall thickness. Excellent concentricity and consistent roundness ensure reliable fit in precision assemblies, pneumatic systems and mechanical linkage components.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eGood Thermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n            \u003cp\u003eAlongside structural performance, the material retains strong thermal conductivity ideal for heat sinks, cooling systems and thermal management components. It also provides reliable electrical conductivity for grounding elements, electrical housings and conductive structural parts.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 产品形态与规格 --\u003e\n    \u003ch3\u003eAvailable Product Forms \u0026amp; Specifications\u003c\/h3\u003e\n    \u003cp\u003e\u003cspan class=\"rk-gold-text\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n    \n    \u003cdiv class=\"rk-features-grid\"\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n            \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n            \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 应用场景 --\u003e\n    \u003cdiv class=\"rk-apps-section\"\u003e\n        \u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n        \u003cp\u003eOur aluminum alloy tubes are widely adopted across diverse industrial sectors. Below are the most common application areas we support:\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-apps-grid\"\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eAutomation \u0026amp; Robotics\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                    \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                    \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                    \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                    \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eAutomotive \u0026amp; Transportation\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                    \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                    \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                    \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                    \u003cli\u003eCooling system piping\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eElectronics \u0026amp; Thermal\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                    \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                    \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                    \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                    \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eArchitectural \u0026amp; Construction\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                    \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                    \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                    \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                    \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003ePrecision Engineering\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                    \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                    \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                    \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                    \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eGeneral Manufacturing\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                    \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                    \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                    \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                    \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 定制与优势 --\u003e\n    \u003cdiv class=\"rk-advantage-box\"\u003e\n        \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan style=\"color:#d4af37; font-weight:600;\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-advantage-list\"\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 底部品牌 --\u003e\n    \u003cdiv class=\"rk-brand-footer\"\u003e\n        \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n        \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 13mm (0.512\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43796939472955,"sku":null,"price":5.52,"currency_code":"USD","in_stock":true},{"title":"OD 13mm (0.512\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43796939505723,"sku":null,"price":7.36,"currency_code":"USD","in_stock":true},{"title":"OD 13mm (0.512\") \/ WT 3mm (0.12\") \/ 500mm 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relative;\n}\n\n.rk-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n}\n\n\/* 底部品牌栏 *\/\n.rk-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 40px;\n}\n\n.rk-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n\n.rk-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n}\n\n\/* 响应式适配 *\/\n@media screen and (max-width: 992px) {\n    .rk-apps-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n}\n\n@media screen and (max-width: 768px) {\n    .rk-aluminum-detail-wrap {\n        padding: 20px 15px;\n    }\n    \n    .rk-aluminum-detail-wrap h2 {\n        font-size: 24px;\n    }\n    \n    .rk-aluminum-detail-wrap h3 {\n        font-size: 19px;\n    }\n    \n    .rk-aluminum-detail-wrap p,\n    .rk-feature-card p,\n    .rk-app-card li {\n        font-size: 15px;\n    }\n    \n    .rk-intro-section {\n        padding: 25px 20px;\n    }\n    \n    .rk-intro-section p {\n        font-size: 16px;\n    }\n    \n    .rk-features-grid,\n    .rk-advantage-list {\n        grid-template-columns: 1fr;\n        gap: 18px;\n    }\n    \n    .rk-apps-grid {\n        grid-template-columns: 1fr;\n    }\n    \n    .rk-advantage-box {\n        padding: 25px 20px;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-aluminum-detail-wrap\"\u003e\n\n    \u003c!-- 开篇介绍 --\u003e\n    \u003cdiv class=\"rk-intro-section\"\u003e\n        \u003ch2\u003ePremium Aluminum Alloy Tubes\u003c\/h2\u003e\n        \u003cp\u003e\u003cspan class=\"rk-highlight\"\u003eRapidKeen\u003c\/span\u003e supplies industrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. As a versatile heat-treatable alloy solution, our hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, making them a trusted choice for demanding industrial fabrication, precision engineering and lightweight structural applications.\u003c\/p\u003e\n        \u003cp\u003eWe produce seamless and precision-drawn aluminum tubes in a full range of outer diameters, wall thicknesses and custom lengths. Every tube is manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish, ready for direct assembly or secondary fabrication.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 核心特性 --\u003e\n    \u003ch3\u003eCore Performance Characteristics\u003c\/h3\u003e\n    \u003cdiv class=\"rk-features-grid\"\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eOutstanding Strength-to-Weight Ratio\u003c\/h4\u003e\n            \u003cp\u003eOur alloy tubes offer remarkable structural strength while remaining significantly lighter than steel and copper alternatives. This lightweight advantage reduces overall assembly weight, lowers transportation costs and improves energy efficiency — especially critical for automotive, robotics and aerospace-related applications.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n            \u003cp\u003eThe alloy composition forms a natural protective oxide layer when exposed to air, delivering reliable resistance to atmospheric corrosion, moisture and many common industrial chemicals. It performs well in both indoor and outdoor environments, maintaining structural integrity and surface appearance over extended service life.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eSuperior Machinability \u0026amp; Formability\u003c\/h4\u003e\n            \u003cp\u003eThis alloy grade is highly workable and responds exceptionally well to CNC machining, drilling, milling, bending, flaring and swaging operations. It produces clean, burr-free cuts and holds tight tolerances through complex fabrication processes, supporting high-volume production and custom one-off projects alike.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n            \u003cp\u003eThe tube surface accepts a wide range of decorative and functional finishes including anodizing, powder coating, polishing and sandblasting. Anodized layers form a uniform, hard and wear-resistant surface that enhances corrosion protection and provides a clean professional appearance for visible structural components.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n            \u003cp\u003eManufactured with precision extrusion and cold-drawing processes, our aluminum tubes maintain strict control over outer diameter, inner diameter and wall thickness. Excellent concentricity and consistent roundness ensure reliable fit in precision assemblies, pneumatic systems and mechanical linkage components.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eGood Thermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n            \u003cp\u003eAlongside structural performance, the material retains strong thermal conductivity ideal for heat sinks, cooling systems and thermal management components. It also provides reliable electrical conductivity for grounding elements, electrical housings and conductive structural parts.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 产品形态与规格 --\u003e\n    \u003ch3\u003eAvailable Product Forms \u0026amp; Specifications\u003c\/h3\u003e\n    \u003cp\u003e\u003cspan class=\"rk-gold-text\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n    \n    \u003cdiv class=\"rk-features-grid\"\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n            \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n            \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 应用场景 --\u003e\n    \u003cdiv class=\"rk-apps-section\"\u003e\n        \u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n        \u003cp\u003eOur aluminum alloy tubes are widely adopted across diverse industrial sectors. Below are the most common application areas we support:\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-apps-grid\"\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eAutomation \u0026amp; Robotics\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                    \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                    \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                    \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                    \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eAutomotive \u0026amp; Transportation\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                    \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                    \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                    \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                    \u003cli\u003eCooling system piping\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eElectronics \u0026amp; Thermal\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                    \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                    \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                    \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                    \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eArchitectural \u0026amp; Construction\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                    \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                    \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                    \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                    \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003ePrecision Engineering\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                    \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                    \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                    \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                    \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eGeneral Manufacturing\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                    \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                    \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                    \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                    \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 定制与优势 --\u003e\n    \u003cdiv class=\"rk-advantage-box\"\u003e\n        \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan style=\"color:#d4af37; font-weight:600;\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-advantage-list\"\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 底部品牌 --\u003e\n    \u003cdiv class=\"rk-brand-footer\"\u003e\n        \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n        \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 14mm (0.551\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43796951105595,"sku":null,"price":6.12,"currency_code":"USD","in_stock":true},{"title":"OD 14mm (0.551\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43796951138363,"sku":null,"price":7.98,"currency_code":"USD","in_stock":true},{"title":"OD 14mm (0.551\") \/ WT 3mm (0.12\") \/ 500mm 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  font-size: 18px;\n}\n\n\/* 特性网格 *\/\n.rk-features-grid {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 25px;\n    margin: 30px 0 50px 0;\n}\n\n.rk-feature-card {\n    background: #ffffff;\n    border: 1px solid #9EC9F2;\n    border-radius: 8px;\n    padding: 25px;\n    transition: all 0.3s ease;\n}\n\n.rk-feature-card:hover {\n    box-shadow: 0 6px 20px rgba(0, 89, 105, 0.1);\n    border-color: #00AAFF;\n    transform: translateY(-2px);\n}\n\n.rk-feature-card h4 {\n    color: #005969;\n    font-size: 19px;\n    margin: 0 0 12px 0;\n    display: flex;\n    align-items: center;\n    gap: 10px;\n}\n\n.rk-feature-card h4::before {\n    content: \"\";\n    display: inline-block;\n    width: 8px;\n    height: 8px;\n    background: #d4af37;\n    border-radius: 50%;\n}\n\n.rk-feature-card p {\n    font-size: 16px;\n    margin: 0;\n    color: #555555;\n}\n\n\/* 应用场景区 *\/\n.rk-apps-section {\n    margin: 50px 0;\n}\n\n.rk-apps-grid {\n    display: grid;\n    grid-template-columns: repeat(3, 1fr);\n    gap: 20px;\n    margin-top: 30px;\n}\n\n.rk-app-card {\n    background: #f8fbfe;\n    border-top: 4px solid #00AAFF;\n    padding: 25px 20px;\n    border-radius: 6px;\n}\n\n.rk-app-card h4 {\n    color: #005969;\n    font-size: 18px;\n    margin: 0 0 12px 0;\n}\n\n.rk-app-card ul {\n    margin: 0;\n    padding-left: 20px;\n    font-size: 16px;\n    color: #555555;\n}\n\n.rk-app-card li {\n    margin-bottom: 6px;\n}\n\n\/* 定制与优势区 *\/\n.rk-advantage-box {\n    background: #005969;\n    color: #ffffff;\n    padding: 35px 30px;\n    border-radius: 10px;\n    margin: 50px 0;\n}\n\n.rk-advantage-box h3 {\n    color: #d4af37;\n    margin-top: 0;\n}\n\n.rk-advantage-box p {\n    color: #e8f4f8;\n    font-size: 17px;\n}\n\n.rk-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 15px 30px;\n    margin-top: 20px;\n}\n\n.rk-advantage-item {\n    font-size: 16px;\n    padding-left: 25px;\n    position: relative;\n}\n\n.rk-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n}\n\n\/* 底部品牌栏 *\/\n.rk-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 40px;\n}\n\n.rk-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n\n.rk-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n}\n\n\/* 响应式适配 *\/\n@media screen and (max-width: 992px) {\n    .rk-apps-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n}\n\n@media screen and (max-width: 768px) {\n    .rk-aluminum-detail-wrap {\n        padding: 20px 15px;\n    }\n    \n    .rk-aluminum-detail-wrap h2 {\n        font-size: 24px;\n    }\n    \n    .rk-aluminum-detail-wrap h3 {\n        font-size: 19px;\n    }\n    \n    .rk-aluminum-detail-wrap p,\n    .rk-feature-card p,\n    .rk-app-card li {\n        font-size: 15px;\n    }\n    \n    .rk-intro-section {\n        padding: 25px 20px;\n    }\n    \n    .rk-intro-section p {\n        font-size: 16px;\n    }\n    \n    .rk-features-grid,\n    .rk-advantage-list {\n        grid-template-columns: 1fr;\n        gap: 18px;\n    }\n    \n    .rk-apps-grid {\n        grid-template-columns: 1fr;\n    }\n    \n    .rk-advantage-box {\n        padding: 25px 20px;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-aluminum-detail-wrap\"\u003e\n\n    \u003c!-- 开篇介绍 --\u003e\n    \u003cdiv class=\"rk-intro-section\"\u003e\n        \u003ch2\u003ePremium Aluminum Alloy Tubes\u003c\/h2\u003e\n        \u003cp\u003e\u003cspan class=\"rk-highlight\"\u003eRapidKeen\u003c\/span\u003e supplies industrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. As a versatile heat-treatable alloy solution, our hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, making them a trusted choice for demanding industrial fabrication, precision engineering and lightweight structural applications.\u003c\/p\u003e\n        \u003cp\u003eWe produce seamless and precision-drawn aluminum tubes in a full range of outer diameters, wall thicknesses and custom lengths. Every tube is manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish, ready for direct assembly or secondary fabrication.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 核心特性 --\u003e\n    \u003ch3\u003eCore Performance Characteristics\u003c\/h3\u003e\n    \u003cdiv class=\"rk-features-grid\"\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eOutstanding Strength-to-Weight Ratio\u003c\/h4\u003e\n            \u003cp\u003eOur alloy tubes offer remarkable structural strength while remaining significantly lighter than steel and copper alternatives. This lightweight advantage reduces overall assembly weight, lowers transportation costs and improves energy efficiency — especially critical for automotive, robotics and aerospace-related applications.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n            \u003cp\u003eThe alloy composition forms a natural protective oxide layer when exposed to air, delivering reliable resistance to atmospheric corrosion, moisture and many common industrial chemicals. It performs well in both indoor and outdoor environments, maintaining structural integrity and surface appearance over extended service life.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eSuperior Machinability \u0026amp; Formability\u003c\/h4\u003e\n            \u003cp\u003eThis alloy grade is highly workable and responds exceptionally well to CNC machining, drilling, milling, bending, flaring and swaging operations. It produces clean, burr-free cuts and holds tight tolerances through complex fabrication processes, supporting high-volume production and custom one-off projects alike.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n            \u003cp\u003eThe tube surface accepts a wide range of decorative and functional finishes including anodizing, powder coating, polishing and sandblasting. Anodized layers form a uniform, hard and wear-resistant surface that enhances corrosion protection and provides a clean professional appearance for visible structural components.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n            \u003cp\u003eManufactured with precision extrusion and cold-drawing processes, our aluminum tubes maintain strict control over outer diameter, inner diameter and wall thickness. Excellent concentricity and consistent roundness ensure reliable fit in precision assemblies, pneumatic systems and mechanical linkage components.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eGood Thermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n            \u003cp\u003eAlongside structural performance, the material retains strong thermal conductivity ideal for heat sinks, cooling systems and thermal management components. It also provides reliable electrical conductivity for grounding elements, electrical housings and conductive structural parts.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 产品形态与规格 --\u003e\n    \u003ch3\u003eAvailable Product Forms \u0026amp; Specifications\u003c\/h3\u003e\n    \u003cp\u003e\u003cspan class=\"rk-gold-text\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n    \n    \u003cdiv class=\"rk-features-grid\"\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n            \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"rk-feature-card\"\u003e\n            \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n            \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 应用场景 --\u003e\n    \u003cdiv class=\"rk-apps-section\"\u003e\n        \u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n        \u003cp\u003eOur aluminum alloy tubes are widely adopted across diverse industrial sectors. Below are the most common application areas we support:\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-apps-grid\"\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eAutomation \u0026amp; Robotics\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                    \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                    \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                    \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                    \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eAutomotive \u0026amp; Transportation\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                    \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                    \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                    \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                    \u003cli\u003eCooling system piping\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eElectronics \u0026amp; Thermal\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                    \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                    \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                    \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                    \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eArchitectural \u0026amp; Construction\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                    \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                    \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                    \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                    \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003ePrecision Engineering\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                    \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                    \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                    \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                    \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-app-card\"\u003e\n                \u003ch4\u003eGeneral Manufacturing\u003c\/h4\u003e\n                \u003cul\u003e\n                    \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                    \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                    \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                    \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                    \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                \u003c\/ul\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 定制与优势 --\u003e\n    \u003cdiv class=\"rk-advantage-box\"\u003e\n        \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan style=\"color:#d4af37; font-weight:600;\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-advantage-list\"\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n            \u003cdiv class=\"rk-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 底部品牌 --\u003e\n    \u003cdiv class=\"rk-brand-footer\"\u003e\n        \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n        \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n    \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 15mm (0.591\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43796961034299,"sku":null,"price":6.22,"currency_code":"USD","in_stock":true},{"title":"OD 15mm (0.591\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43796961067067,"sku":null,"price":8.6,"currency_code":"USD","in_stock":true},{"title":"OD 15mm (0.591\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43796961099835,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 15mm (0.591\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43796961132603,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 15mm (0.591\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43796961165371,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43796959723579,"sku":null,"price":3.52,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43796959756347,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43796959789115,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 4mm (0.157\") \/ 500mm 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(19.7\")","offer_id":43796963557435,"sku":null,"price":27.98,"currency_code":"USD","in_stock":true},{"title":"OD 45mm (1.772\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43796963590203,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 45mm (1.772\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43796963622971,"sku":null,"price":40.32,"currency_code":"USD","in_stock":true},{"title":"OD 48mm (1.89\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43796963655739,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 48mm (1.89\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43796963688507,"sku":null,"price":20.42,"currency_code":"USD","in_stock":true},{"title":"OD 48mm (1.89\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43796963721275,"sku":null,"price":30.5,"currency_code":"USD","in_stock":true},{"title":"OD 48mm (1.89\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43796963754043,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 48mm (1.89\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43796963786811,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 50mm (1.969\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43796963819579,"sku":null,"price":16.8,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43796963852347,"sku":null,"price":23.52,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43796963885115,"sku":null,"price":34.12,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43796963917883,"sku":null,"price":40.32,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43796963950651,"sku":null,"price":46.54,"currency_code":"USD","in_stock":true},{"title":"OD 55mm (2.165\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43796963983419,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43796964016187,"sku":null,"price":25.58,"currency_code":"USD","in_stock":true},{"title":"OD 55mm (2.165\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43796964048955,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43796964081723,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43796964114491,"sku":null,"price":49.64,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43796964147259,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 60mm (2.362\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43796964180027,"sku":null,"price":30.5,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43796964212795,"sku":null,"price":37.22,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43796964245563,"sku":null,"price":50.66,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43796964278331,"sku":null,"price":58.94,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43796964311099,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43796964343867,"sku":null,"price":34.88,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43796964376635,"sku":null,"price":50.4,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43796964409403,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43796964442171,"sku":null,"price":79.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/hollowaluminumtube.webp?v=1784130024"},{"product_id":"precision-hollow-aluminum-alloy-tubes-industrial-custom-round-tubing","title":"Aluminum Alloy Tube OD 16mm (0.63\") custom","description":"\u003cstyle\u003e\n.rk-layout-a-wrap {\n    width: 100%;\n    max-width: 1280px;\n    margin: 0 auto;\n    padding: 30px 20px;\n    font-family: -apple-system, 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margin-top: 0;\n}\n.rk-a-advantage-box p {\n    color: #e8f4f8;\n    font-size: 17px;\n}\n.rk-a-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 12px 30px;\n    margin-top: 20px;\n}\n.rk-a-advantage-item {\n    font-size: 16px;\n    padding-left: 25px;\n    position: relative;\n}\n.rk-a-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n}\n\n\/* 品牌底部 *\/\n.rk-a-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 40px;\n}\n.rk-a-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n.rk-a-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n    text-align: center;\n}\n\n\/* 响应式 *\/\n@media screen and (max-width: 992px) {\n    .rk-layout-a-wrap {\n        flex-direction: column;\n    }\n    .rk-a-sidebar {\n        width: 100%;\n        position: static;\n    }\n    .rk-a-nav-list {\n        display: flex;\n        flex-wrap: wrap;\n        gap: 8px;\n    }\n    .rk-a-nav-list li {\n        margin-bottom: 0;\n    }\n    .rk-a-features-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n}\n@media screen and (max-width: 768px) {\n    .rk-layout-a-wrap {\n        padding: 20px 15px;\n    }\n    .rk-a-content h2 {\n        font-size: 24px;\n    }\n    .rk-a-content h3 {\n        font-size: 19px;\n    }\n    .rk-a-content p {\n        font-size: 15px;\n    }\n    .rk-a-intro {\n        padding: 22px;\n    }\n    .rk-a-features-grid,\n    .rk-a-forms-row,\n    .rk-a-apps-grid,\n    .rk-a-advantage-list {\n        grid-template-columns: 1fr;\n    }\n    .rk-a-advantage-box {\n        padding: 25px 20px;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-layout-a-wrap\"\u003e\n    \u003c!-- 侧边导航 --\u003e\n    \u003caside class=\"rk-a-sidebar\"\u003e\n        \u003cdiv class=\"rk-a-nav-title\"\u003eContents\u003c\/div\u003e\n        \u003cul class=\"rk-a-nav-list\"\u003e\n            \u003cli\u003e\u003ca href=\"#a-intro\"\u003eProduct Overview\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-features\"\u003eCore Characteristics\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-forms\"\u003eProduct Forms\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-apps\"\u003eApplications\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-advantages\"\u003eService Advantages\u003c\/a\u003e\u003c\/li\u003e\n        \u003c\/ul\u003e\n    \u003c\/aside\u003e\n\n    \u003c!-- 主内容 --\u003e\n    \u003cmain class=\"rk-a-content\"\u003e\n        \u003csection id=\"a-intro\" class=\"rk-a-intro\"\u003e\n            \u003ch2\u003ePremium Aluminum Alloy Tubes\u003c\/h2\u003e\n            \u003cp\u003e\u003cspan class=\"rk-a-highlight\"\u003eRapidKeen\u003c\/span\u003e supplies industrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. As a versatile heat-treatable alloy solution, our hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, making them a trusted choice for demanding industrial fabrication, precision engineering and lightweight structural applications.\u003c\/p\u003e\n            \u003cp\u003eWe produce seamless and precision-drawn aluminum tubes in a full range of outer diameters, wall thicknesses and custom lengths. Every tube is manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish, ready for direct assembly or secondary fabrication.\u003c\/p\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-features\"\u003e\n            \u003ch3\u003eCore Performance Characteristics\u003c\/h3\u003e\n            \u003cdiv class=\"rk-a-features-grid\"\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eHigh Strength-to-Weight Ratio\u003c\/h4\u003e\n                    \u003cp\u003eRemarkable structural strength while remaining significantly lighter than steel and copper alternatives. Reduces assembly weight, lowers transportation costs and improves energy efficiency.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n                    \u003cp\u003eNatural protective oxide layer delivers reliable resistance to atmospheric corrosion, moisture and common industrial chemicals. Performs well in both indoor and outdoor environments.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eSuperior Machinability\u003c\/h4\u003e\n                    \u003cp\u003eResponds exceptionally well to CNC machining, drilling, milling, bending and flaring. Produces clean burr-free cuts and holds tight tolerances through complex fabrication.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n                    \u003cp\u003eAccepts anodizing, powder coating, polishing and sandblasting. Anodized layers form a uniform, hard wear-resistant surface with enhanced corrosion protection.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n                    \u003cp\u003ePrecision extrusion and cold-drawing ensure strict control over OD, ID and wall thickness. Excellent concentricity and roundness for reliable fit in precision assemblies.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eThermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n                    \u003cp\u003eStrong thermal conductivity ideal for heat sinks and cooling systems. Reliable electrical conductivity for grounding elements and electrical housing components.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-forms\"\u003e\n            \u003ch3\u003eAvailable Product Forms \u0026amp; Specifications\u003c\/h3\u003e\n            \u003cp\u003e\u003cspan class=\"rk-a-gold\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n            \u003cdiv class=\"rk-a-forms-row\"\u003e\n                \u003cdiv class=\"rk-a-form-card\"\u003e\n                    \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n                    \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-form-card\"\u003e\n                    \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n                    \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-apps\"\u003e\n            \u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n            \u003cp\u003eOur aluminum alloy tubes are widely adopted across diverse industrial sectors. Below are the most common application areas we support:\u003c\/p\u003e\n            \u003cdiv class=\"rk-a-apps-grid\"\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e01\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eAutomation \u0026amp; Robotics\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                            \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                            \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                            \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                            \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e02\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eAutomotive \u0026amp; Transportation\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                            \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                            \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                            \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                            \u003cli\u003eCooling system piping\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e03\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eElectronics \u0026amp; Thermal\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                            \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                            \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                            \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                            \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e04\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eArchitectural \u0026amp; Construction\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                            \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                            \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                            \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                            \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e05\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003ePrecision Engineering\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                            \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                            \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                            \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                            \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e06\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eGeneral Manufacturing\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                            \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                            \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                            \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                            \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-advantages\"\u003e\n            \u003cdiv class=\"rk-a-advantage-box\"\u003e\n                \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n                \u003cp\u003e\u003cspan style=\"color:#d4af37; font-weight:600;\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n                \u003cdiv class=\"rk-a-advantage-list\"\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003cdiv class=\"rk-a-brand-footer\"\u003e\n            \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n            \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/main\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 16mm (0.63\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797036073019,"sku":null,"price":6.74,"currency_code":"USD","in_stock":true},{"title":"OD 16mm (0.63\") \/ WT 2mm (0.08\") \/ 500mm 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background: #005969;\n    color: #ffffff;\n    padding: 35px 30px;\n    border-radius: 10px;\n    margin-top: 40px;\n}\n.rk-a-advantage-box h3 {\n    color: #d4af37;\n    margin-top: 0;\n}\n.rk-a-advantage-box p {\n    color: #e8f4f8;\n    font-size: 17px;\n}\n.rk-a-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 12px 30px;\n    margin-top: 20px;\n}\n.rk-a-advantage-item {\n    font-size: 16px;\n    padding-left: 25px;\n    position: relative;\n}\n.rk-a-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n}\n\n\/* 品牌底部 *\/\n.rk-a-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 40px;\n}\n.rk-a-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n.rk-a-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n    text-align: center;\n}\n\n\/* 响应式 *\/\n@media screen and (max-width: 992px) {\n    .rk-layout-a-wrap {\n        flex-direction: column;\n    }\n    .rk-a-sidebar {\n        width: 100%;\n        position: static;\n    }\n    .rk-a-nav-list {\n        display: flex;\n        flex-wrap: wrap;\n        gap: 8px;\n    }\n    .rk-a-nav-list li {\n        margin-bottom: 0;\n    }\n    .rk-a-features-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n}\n@media screen and (max-width: 768px) {\n    .rk-layout-a-wrap {\n        padding: 20px 15px;\n    }\n    .rk-a-content h2 {\n        font-size: 24px;\n    }\n    .rk-a-content h3 {\n        font-size: 19px;\n    }\n    .rk-a-content p {\n        font-size: 15px;\n    }\n    .rk-a-intro {\n        padding: 22px;\n    }\n    .rk-a-features-grid,\n    .rk-a-forms-row,\n    .rk-a-apps-grid,\n    .rk-a-advantage-list {\n        grid-template-columns: 1fr;\n    }\n    .rk-a-advantage-box {\n        padding: 25px 20px;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-layout-a-wrap\"\u003e\n    \u003c!-- 侧边导航 --\u003e\n    \u003caside class=\"rk-a-sidebar\"\u003e\n        \u003cdiv class=\"rk-a-nav-title\"\u003eContents\u003c\/div\u003e\n        \u003cul class=\"rk-a-nav-list\"\u003e\n            \u003cli\u003e\u003ca href=\"#a-intro\"\u003eProduct Overview\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-features\"\u003eCore Characteristics\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-forms\"\u003eProduct Forms\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-apps\"\u003eApplications\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-advantages\"\u003eService Advantages\u003c\/a\u003e\u003c\/li\u003e\n        \u003c\/ul\u003e\n    \u003c\/aside\u003e\n\n    \u003c!-- 主内容 --\u003e\n    \u003cmain class=\"rk-a-content\"\u003e\n        \u003csection id=\"a-intro\" class=\"rk-a-intro\"\u003e\n            \u003ch2\u003ePremium Aluminum Alloy Tubes\u003c\/h2\u003e\n            \u003cp\u003e\u003cspan class=\"rk-a-highlight\"\u003eRapidKeen\u003c\/span\u003e supplies industrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. As a versatile heat-treatable alloy solution, our hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, making them a trusted choice for demanding industrial fabrication, precision engineering and lightweight structural applications.\u003c\/p\u003e\n            \u003cp\u003eWe produce seamless and precision-drawn aluminum tubes in a full range of outer diameters, wall thicknesses and custom lengths. Every tube is manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish, ready for direct assembly or secondary fabrication.\u003c\/p\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-features\"\u003e\n            \u003ch3\u003eCore Performance Characteristics\u003c\/h3\u003e\n            \u003cdiv class=\"rk-a-features-grid\"\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eHigh Strength-to-Weight Ratio\u003c\/h4\u003e\n                    \u003cp\u003eRemarkable structural strength while remaining significantly lighter than steel and copper alternatives. Reduces assembly weight, lowers transportation costs and improves energy efficiency.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n                    \u003cp\u003eNatural protective oxide layer delivers reliable resistance to atmospheric corrosion, moisture and common industrial chemicals. Performs well in both indoor and outdoor environments.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eSuperior Machinability\u003c\/h4\u003e\n                    \u003cp\u003eResponds exceptionally well to CNC machining, drilling, milling, bending and flaring. Produces clean burr-free cuts and holds tight tolerances through complex fabrication.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n                    \u003cp\u003eAccepts anodizing, powder coating, polishing and sandblasting. Anodized layers form a uniform, hard wear-resistant surface with enhanced corrosion protection.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n                    \u003cp\u003ePrecision extrusion and cold-drawing ensure strict control over OD, ID and wall thickness. Excellent concentricity and roundness for reliable fit in precision assemblies.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eThermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n                    \u003cp\u003eStrong thermal conductivity ideal for heat sinks and cooling systems. Reliable electrical conductivity for grounding elements and electrical housing components.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-forms\"\u003e\n            \u003ch3\u003eAvailable Product Forms \u0026amp; Specifications\u003c\/h3\u003e\n            \u003cp\u003e\u003cspan class=\"rk-a-gold\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n            \u003cdiv class=\"rk-a-forms-row\"\u003e\n                \u003cdiv class=\"rk-a-form-card\"\u003e\n                    \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n                    \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-form-card\"\u003e\n                    \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n                    \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-apps\"\u003e\n            \u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n            \u003cp\u003eOur aluminum alloy tubes are widely adopted across diverse industrial sectors. Below are the most common application areas we support:\u003c\/p\u003e\n            \u003cdiv class=\"rk-a-apps-grid\"\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e01\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eAutomation \u0026amp; Robotics\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                            \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                            \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                            \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                            \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e02\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eAutomotive \u0026amp; Transportation\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                            \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                            \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                            \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                            \u003cli\u003eCooling system piping\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e03\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eElectronics \u0026amp; Thermal\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                            \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                            \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                            \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                            \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e04\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eArchitectural \u0026amp; Construction\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                            \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                            \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                            \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                            \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e05\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003ePrecision Engineering\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                            \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                            \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                            \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                            \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e06\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eGeneral Manufacturing\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                            \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                            \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                            \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                            \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-advantages\"\u003e\n            \u003cdiv class=\"rk-a-advantage-box\"\u003e\n                \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n                \u003cp\u003e\u003cspan style=\"color:#d4af37; font-weight:600;\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n                \u003cdiv class=\"rk-a-advantage-list\"\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003cdiv class=\"rk-a-brand-footer\"\u003e\n            \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n            \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/main\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 17mm (0.67\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797373681723,"sku":null,"price":6.74,"currency_code":"USD","in_stock":true},{"title":"OD 17mm (0.67\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797373714491,"sku":null,"price":9.42,"currency_code":"USD","in_stock":true},{"title":"OD 17mm (0.67\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797373747259,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 17mm (0.67\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797373780027,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 17mm (0.67\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797373812795,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797372043323,"sku":null,"price":3.52,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797372076091,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797372108859,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797372141627,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797372174395,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797372207163,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797372239931,"sku":null,"price":4.26,"currency_code":"USD","in_stock":true},{"title":"OD 6mm (0.236\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797372272699,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797372305467,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797372338235,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797372371003,"sku":null,"price":4.27,"currency_code":"USD","in_stock":true},{"title":"OD 7mm (0.276\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797372403771,"sku":null,"price":4.88,"currency_code":"USD","in_stock":true},{"title":"OD 7mm (0.276\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797372436539,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797372469307,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 5mm (0.2\") \/ 500mm 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(19.7\")","offer_id":43797376237627,"sku":null,"price":40.32,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797376270395,"sku":null,"price":46.54,"currency_code":"USD","in_stock":true},{"title":"OD 55mm (2.165\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797376303163,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797376335931,"sku":null,"price":25.58,"currency_code":"USD","in_stock":true},{"title":"OD 55mm (2.165\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797376368699,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797376401467,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797376434235,"sku":null,"price":49.64,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797376467003,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 60mm (2.362\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797376499771,"sku":null,"price":30.5,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797376532539,"sku":null,"price":37.22,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797376565307,"sku":null,"price":50.66,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797376598075,"sku":null,"price":58.94,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797376630843,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797376663611,"sku":null,"price":34.88,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797376696379,"sku":null,"price":50.4,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797376729147,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797376761915,"sku":null,"price":79.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/hollowroundtube.webp?v=1784130024"},{"product_id":"precision-hollow-aluminum-alloy-tubes-industrial-custom-round-tubing-2","title":"Aluminum Alloy Tube OD 18mm (0.709\") custom","description":"\u003cstyle\u003e\n.rk-layout-a-wrap {\n    width: 100%;\n    max-width: 1280px;\n    margin: 0 auto;\n    padding: 30px 20px;\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n    color: #333333;\n    line-height: 1.75;\n    box-sizing: border-box;\n    display: flex;\n    gap: 35px;\n}\n\n\/* 侧边导航 *\/\n.rk-a-sidebar {\n    width: 220px;\n    flex-shrink: 0;\n    position: sticky;\n    top: 30px;\n    align-self: flex-start;\n}\n.rk-a-nav-title {\n    color: #005969;\n    font-size: 18px;\n    font-weight: 700;\n    padding-bottom: 12px;\n    border-bottom: 2px solid #d4af37;\n    margin-bottom: 15px;\n}\n.rk-a-nav-list {\n    list-style: none;\n    padding: 0;\n    margin: 0;\n}\n.rk-a-nav-list li {\n    margin-bottom: 8px;\n}\n.rk-a-nav-list a {\n    display: block;\n    padding: 10px 14px;\n    color: #005969;\n    text-decoration: none;\n    font-size: 15px;\n    border-radius: 6px;\n    border-left: 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#777777;\n    text-align: center;\n}\n\n\/* 响应式 *\/\n@media screen and (max-width: 992px) {\n    .rk-layout-a-wrap {\n        flex-direction: column;\n    }\n    .rk-a-sidebar {\n        width: 100%;\n        position: static;\n    }\n    .rk-a-nav-list {\n        display: flex;\n        flex-wrap: wrap;\n        gap: 8px;\n    }\n    .rk-a-nav-list li {\n        margin-bottom: 0;\n    }\n    .rk-a-features-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n}\n@media screen and (max-width: 768px) {\n    .rk-layout-a-wrap {\n        padding: 20px 15px;\n    }\n    .rk-a-content h2 {\n        font-size: 24px;\n    }\n    .rk-a-content h3 {\n        font-size: 19px;\n    }\n    .rk-a-content p {\n        font-size: 15px;\n    }\n    .rk-a-intro {\n        padding: 22px;\n    }\n    .rk-a-features-grid,\n    .rk-a-forms-row,\n    .rk-a-apps-grid,\n    .rk-a-advantage-list {\n        grid-template-columns: 1fr;\n    }\n    .rk-a-advantage-box {\n        padding: 25px 20px;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-layout-a-wrap\"\u003e\n    \u003c!-- 侧边导航 --\u003e\n    \u003caside class=\"rk-a-sidebar\"\u003e\n        \u003cdiv class=\"rk-a-nav-title\"\u003eContents\u003c\/div\u003e\n        \u003cul class=\"rk-a-nav-list\"\u003e\n            \u003cli\u003e\u003ca href=\"#a-intro\"\u003eProduct Overview\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-features\"\u003eCore Characteristics\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-forms\"\u003eProduct Forms\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-apps\"\u003eApplications\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-advantages\"\u003eService Advantages\u003c\/a\u003e\u003c\/li\u003e\n        \u003c\/ul\u003e\n    \u003c\/aside\u003e\n\n    \u003c!-- 主内容 --\u003e\n    \u003cmain class=\"rk-a-content\"\u003e\n        \u003csection id=\"a-intro\" class=\"rk-a-intro\"\u003e\n            \u003ch2\u003ePremium Aluminum Alloy Tubes\u003c\/h2\u003e\n            \u003cp\u003e\u003cspan class=\"rk-a-highlight\"\u003eRapidKeen\u003c\/span\u003e supplies industrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. As a versatile heat-treatable alloy solution, our hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, making them a trusted choice for demanding industrial fabrication, precision engineering and lightweight structural applications.\u003c\/p\u003e\n            \u003cp\u003eWe produce seamless and precision-drawn aluminum tubes in a full range of outer diameters, wall thicknesses and custom lengths. Every tube is manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish, ready for direct assembly or secondary fabrication.\u003c\/p\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-features\"\u003e\n            \u003ch3\u003eCore Performance Characteristics\u003c\/h3\u003e\n            \u003cdiv class=\"rk-a-features-grid\"\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eHigh Strength-to-Weight Ratio\u003c\/h4\u003e\n                    \u003cp\u003eRemarkable structural strength while remaining significantly lighter than steel and copper alternatives. Reduces assembly weight, lowers transportation costs and improves energy efficiency.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n                    \u003cp\u003eNatural protective oxide layer delivers reliable resistance to atmospheric corrosion, moisture and common industrial chemicals. Performs well in both indoor and outdoor environments.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eSuperior Machinability\u003c\/h4\u003e\n                    \u003cp\u003eResponds exceptionally well to CNC machining, drilling, milling, bending and flaring. Produces clean burr-free cuts and holds tight tolerances through complex fabrication.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n                    \u003cp\u003eAccepts anodizing, powder coating, polishing and sandblasting. Anodized layers form a uniform, hard wear-resistant surface with enhanced corrosion protection.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n                    \u003cp\u003ePrecision extrusion and cold-drawing ensure strict control over OD, ID and wall thickness. Excellent concentricity and roundness for reliable fit in precision assemblies.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eThermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n                    \u003cp\u003eStrong thermal conductivity ideal for heat sinks and cooling systems. Reliable electrical conductivity for grounding elements and electrical housing components.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-forms\"\u003e\n            \u003ch3\u003eAvailable Product Forms \u0026amp; Specifications\u003c\/h3\u003e\n            \u003cp\u003e\u003cspan class=\"rk-a-gold\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n            \u003cdiv class=\"rk-a-forms-row\"\u003e\n                \u003cdiv class=\"rk-a-form-card\"\u003e\n                    \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n                    \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-form-card\"\u003e\n                    \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n                    \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-apps\"\u003e\n            \u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n            \u003cp\u003eOur aluminum alloy tubes are widely adopted across diverse industrial sectors. Below are the most common application areas we support:\u003c\/p\u003e\n            \u003cdiv class=\"rk-a-apps-grid\"\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e01\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eAutomation \u0026amp; Robotics\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                            \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                            \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                            \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                            \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e02\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eAutomotive \u0026amp; Transportation\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                            \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                            \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                            \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                            \u003cli\u003eCooling system piping\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e03\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eElectronics \u0026amp; Thermal\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                            \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                            \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                            \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                            \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e04\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eArchitectural \u0026amp; Construction\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                            \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                            \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                            \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                            \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e05\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003ePrecision Engineering\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                            \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                            \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                            \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                            \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e06\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eGeneral Manufacturing\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                            \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                            \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                            \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                            \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-advantages\"\u003e\n            \u003cdiv class=\"rk-a-advantage-box\"\u003e\n                \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n                \u003cp\u003e\u003cspan style=\"color:#d4af37; font-weight:600;\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n                \u003cdiv class=\"rk-a-advantage-list\"\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003cdiv class=\"rk-a-brand-footer\"\u003e\n            \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n            \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/main\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 18mm (0.709\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797395111995,"sku":null,"price":7.36,"currency_code":"USD","in_stock":true},{"title":"OD 18mm (0.709\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797395144763,"sku":null,"price":9.84,"currency_code":"USD","in_stock":true},{"title":"OD 18mm (0.709\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797395177531,"sku":null,"price":11.72,"currency_code":"USD","in_stock":true},{"title":"OD 18mm (0.709\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797395210299,"sku":null,"price":14.2,"currency_code":"USD","in_stock":true},{"title":"OD 18mm (0.709\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797395243067,"sku":null,"price":15.69,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797393309755,"sku":null,"price":3.52,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797393342523,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797393375291,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797393408059,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797393440827,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797393473595,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797393506363,"sku":null,"price":4.26,"currency_code":"USD","in_stock":true},{"title":"OD 6mm (0.236\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797393539131,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797393571899,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797393604667,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797393637435,"sku":null,"price":4.27,"currency_code":"USD","in_stock":true},{"title":"OD 7mm (0.276\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797393670203,"sku":null,"price":4.88,"currency_code":"USD","in_stock":true},{"title":"OD 7mm (0.276\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797393702971,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797393735739,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797393768507,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 8mm (0.315\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797393801275,"sku":null,"price":4.52,"currency_code":"USD","in_stock":true},{"title":"OD 8mm (0.315\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797393834043,"sku":null,"price":5.25,"currency_code":"USD","in_stock":true},{"title":"OD 8mm (0.315\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797393866811,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 8mm (0.315\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797393899579,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 8mm (0.315\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797393932347,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 9mm (0.354\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797393965115,"sku":null,"price":4.88,"currency_code":"USD","in_stock":true},{"title":"OD 9mm (0.354\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797393997883,"sku":null,"price":6.12,"currency_code":"USD","in_stock":true},{"title":"OD 9mm (0.354\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797394030651,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 9mm (0.354\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797394063419,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 9mm (0.354\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797394096187,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 10mm (0.394\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797394128955,"sku":null,"price":4.98,"currency_code":"USD","in_stock":true},{"title":"OD 10mm (0.394\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797394161723,"sku":null,"price":6.22,"currency_code":"USD","in_stock":true},{"title":"OD 10mm (0.394\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797394194491,"sku":null,"price":7.0,"currency_code":"USD","in_stock":true},{"title":"OD 10mm (0.394\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797394227259,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 10mm (0.394\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797394260027,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 12mm (0.472\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797394292795,"sku":null,"price":5.5,"currency_code":"USD","in_stock":true},{"title":"OD 12mm (0.472\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797394325563,"sku":null,"price":6.74,"currency_code":"USD","in_stock":true},{"title":"OD 12mm (0.472\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797394358331,"sku":null,"price":8.24,"currency_code":"USD","in_stock":true},{"title":"OD 12mm (0.472\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797394391099,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 12mm (0.472\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797394423867,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 13mm (0.512\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797394456635,"sku":null,"price":5.52,"currency_code":"USD","in_stock":true},{"title":"OD 13mm (0.512\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797394489403,"sku":null,"price":7.36,"currency_code":"USD","in_stock":true},{"title":"OD 13mm (0.512\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797394522171,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 13mm (0.512\") \/ WT 4mm (0.157\") \/ 500mm 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(19.7\")","offer_id":43797394751547,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 15mm (0.591\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797394784315,"sku":null,"price":6.22,"currency_code":"USD","in_stock":true},{"title":"OD 15mm (0.591\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797394817083,"sku":null,"price":8.6,"currency_code":"USD","in_stock":true},{"title":"OD 15mm (0.591\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797394849851,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 15mm (0.591\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797394882619,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 15mm (0.591\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797394915387,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 16mm (0.63\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797394948155,"sku":null,"price":6.74,"currency_code":"USD","in_stock":true},{"title":"OD 16mm (0.63\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797394980923,"sku":null,"price":9.22,"currency_code":"USD","in_stock":true},{"title":"OD 16mm (0.63\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797395013691,"sku":null,"price":10.72,"currency_code":"USD","in_stock":true},{"title":"OD 16mm (0.63\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797395046459,"sku":null,"price":13.84,"currency_code":"USD","in_stock":true},{"title":"OD 16mm (0.63\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797395079227,"sku":null,"price":15.44,"currency_code":"USD","in_stock":true},{"title":"OD 17mm (0.67\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797393145915,"sku":null,"price":6.74,"currency_code":"USD","in_stock":true},{"title":"OD 17mm (0.67\") \/ WT 2mm (0.08\") \/ 500mm 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background: #005969;\n    color: #ffffff;\n    padding: 35px 30px;\n    border-radius: 10px;\n    margin-top: 40px;\n}\n.rk-a-advantage-box h3 {\n    color: #d4af37;\n    margin-top: 0;\n}\n.rk-a-advantage-box p {\n    color: #e8f4f8;\n    font-size: 17px;\n}\n.rk-a-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 12px 30px;\n    margin-top: 20px;\n}\n.rk-a-advantage-item {\n    font-size: 16px;\n    padding-left: 25px;\n    position: relative;\n}\n.rk-a-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n}\n\n\/* 品牌底部 *\/\n.rk-a-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 40px;\n}\n.rk-a-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n.rk-a-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n    text-align: center;\n}\n\n\/* 响应式 *\/\n@media screen and (max-width: 992px) {\n    .rk-layout-a-wrap {\n        flex-direction: column;\n    }\n    .rk-a-sidebar {\n        width: 100%;\n        position: static;\n    }\n    .rk-a-nav-list {\n        display: flex;\n        flex-wrap: wrap;\n        gap: 8px;\n    }\n    .rk-a-nav-list li {\n        margin-bottom: 0;\n    }\n    .rk-a-features-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n}\n@media screen and (max-width: 768px) {\n    .rk-layout-a-wrap {\n        padding: 20px 15px;\n    }\n    .rk-a-content h2 {\n        font-size: 24px;\n    }\n    .rk-a-content h3 {\n        font-size: 19px;\n    }\n    .rk-a-content p {\n        font-size: 15px;\n    }\n    .rk-a-intro {\n        padding: 22px;\n    }\n    .rk-a-features-grid,\n    .rk-a-forms-row,\n    .rk-a-apps-grid,\n    .rk-a-advantage-list {\n        grid-template-columns: 1fr;\n    }\n    .rk-a-advantage-box {\n        padding: 25px 20px;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-layout-a-wrap\"\u003e\n    \u003c!-- 侧边导航 --\u003e\n    \u003caside class=\"rk-a-sidebar\"\u003e\n        \u003cdiv class=\"rk-a-nav-title\"\u003eContents\u003c\/div\u003e\n        \u003cul class=\"rk-a-nav-list\"\u003e\n            \u003cli\u003e\u003ca href=\"#a-intro\"\u003eProduct Overview\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-features\"\u003eCore Characteristics\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-forms\"\u003eProduct Forms\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-apps\"\u003eApplications\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-advantages\"\u003eService Advantages\u003c\/a\u003e\u003c\/li\u003e\n        \u003c\/ul\u003e\n    \u003c\/aside\u003e\n\n    \u003c!-- 主内容 --\u003e\n    \u003cmain class=\"rk-a-content\"\u003e\n        \u003csection id=\"a-intro\" class=\"rk-a-intro\"\u003e\n            \u003ch2\u003ePremium Aluminum Alloy Tubes\u003c\/h2\u003e\n            \u003cp\u003e\u003cspan class=\"rk-a-highlight\"\u003eRapidKeen\u003c\/span\u003e supplies industrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. As a versatile heat-treatable alloy solution, our hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, making them a trusted choice for demanding industrial fabrication, precision engineering and lightweight structural applications.\u003c\/p\u003e\n            \u003cp\u003eWe produce seamless and precision-drawn aluminum tubes in a full range of outer diameters, wall thicknesses and custom lengths. Every tube is manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish, ready for direct assembly or secondary fabrication.\u003c\/p\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-features\"\u003e\n            \u003ch3\u003eCore Performance Characteristics\u003c\/h3\u003e\n            \u003cdiv class=\"rk-a-features-grid\"\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eHigh Strength-to-Weight Ratio\u003c\/h4\u003e\n                    \u003cp\u003eRemarkable structural strength while remaining significantly lighter than steel and copper alternatives. Reduces assembly weight, lowers transportation costs and improves energy efficiency.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n                    \u003cp\u003eNatural protective oxide layer delivers reliable resistance to atmospheric corrosion, moisture and common industrial chemicals. Performs well in both indoor and outdoor environments.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eSuperior Machinability\u003c\/h4\u003e\n                    \u003cp\u003eResponds exceptionally well to CNC machining, drilling, milling, bending and flaring. Produces clean burr-free cuts and holds tight tolerances through complex fabrication.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n                    \u003cp\u003eAccepts anodizing, powder coating, polishing and sandblasting. Anodized layers form a uniform, hard wear-resistant surface with enhanced corrosion protection.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n                    \u003cp\u003ePrecision extrusion and cold-drawing ensure strict control over OD, ID and wall thickness. Excellent concentricity and roundness for reliable fit in precision assemblies.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eThermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n                    \u003cp\u003eStrong thermal conductivity ideal for heat sinks and cooling systems. Reliable electrical conductivity for grounding elements and electrical housing components.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-forms\"\u003e\n            \u003ch3\u003eAvailable Product Forms \u0026amp; Specifications\u003c\/h3\u003e\n            \u003cp\u003e\u003cspan class=\"rk-a-gold\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n            \u003cdiv class=\"rk-a-forms-row\"\u003e\n                \u003cdiv class=\"rk-a-form-card\"\u003e\n                    \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n                    \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-form-card\"\u003e\n                    \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n                    \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-apps\"\u003e\n            \u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n            \u003cp\u003eOur aluminum alloy tubes are widely adopted across diverse industrial sectors. Below are the most common application areas we support:\u003c\/p\u003e\n            \u003cdiv class=\"rk-a-apps-grid\"\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e01\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eAutomation \u0026amp; Robotics\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                            \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                            \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                            \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                            \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e02\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eAutomotive \u0026amp; Transportation\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                            \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                            \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                            \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                            \u003cli\u003eCooling system piping\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e03\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eElectronics \u0026amp; Thermal\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                            \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                            \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                            \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                            \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e04\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eArchitectural \u0026amp; Construction\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                            \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                            \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                            \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                            \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e05\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003ePrecision Engineering\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                            \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                            \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                            \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                            \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e06\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eGeneral Manufacturing\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                            \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                            \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                            \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                            \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-advantages\"\u003e\n            \u003cdiv class=\"rk-a-advantage-box\"\u003e\n                \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n                \u003cp\u003e\u003cspan style=\"color:#d4af37; font-weight:600;\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n                \u003cdiv class=\"rk-a-advantage-list\"\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003cdiv class=\"rk-a-brand-footer\"\u003e\n            \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n            \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/main\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 19mm (0.748\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797406646331,"sku":null,"price":7.98,"currency_code":"USD","in_stock":true},{"title":"OD 19mm (0.748\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797406679099,"sku":null,"price":10.46,"currency_code":"USD","in_stock":true},{"title":"OD 19mm (0.748\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797406711867,"sku":null,"price":12.34,"currency_code":"USD","in_stock":true},{"title":"OD 19mm (0.748\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797406744635,"sku":null,"price":14.6,"currency_code":"USD","in_stock":true},{"title":"OD 19mm (0.748\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797406777403,"sku":null,"price":17.06,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797404680251,"sku":null,"price":3.52,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797404713019,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797404745787,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797404778555,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797404811323,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797404844091,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797404876859,"sku":null,"price":4.26,"currency_code":"USD","in_stock":true},{"title":"OD 6mm (0.236\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797404909627,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797404942395,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797404975163,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797405007931,"sku":null,"price":4.27,"currency_code":"USD","in_stock":true},{"title":"OD 7mm (0.276\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797405040699,"sku":null,"price":4.88,"currency_code":"USD","in_stock":true},{"title":"OD 7mm (0.276\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797405073467,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797405106235,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 5mm (0.2\") \/ 500mm 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(19.7\")","offer_id":43797409071163,"sku":null,"price":49.64,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797409103931,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 60mm (2.362\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797409136699,"sku":null,"price":30.5,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797409169467,"sku":null,"price":37.22,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797409202235,"sku":null,"price":50.66,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797409235003,"sku":null,"price":58.94,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797409267771,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797409300539,"sku":null,"price":34.88,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797409333307,"sku":null,"price":50.4,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797409366075,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797409398843,"sku":null,"price":79.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/hollowroundtube.webp?v=1784130024"},{"product_id":"precision-hollow-aluminum-alloy-tubes-industrial-custom-round-tubing-4","title":"Aluminum Alloy Tube OD 20mm (0.787\") custom","description":"\u003cstyle\u003e\n.rk-layout-a-wrap {\n    width: 100%;\n    max-width: 1280px;\n    margin: 0 auto;\n    padding: 30px 20px;\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n    color: #333333;\n    line-height: 1.75;\n    box-sizing: border-box;\n    display: flex;\n    gap: 35px;\n}\n\n\/* 侧边导航 *\/\n.rk-a-sidebar {\n    width: 220px;\n    flex-shrink: 0;\n    position: sticky;\n    top: 30px;\n    align-self: flex-start;\n}\n.rk-a-nav-title {\n    color: #005969;\n    font-size: 18px;\n    font-weight: 700;\n    padding-bottom: 12px;\n    border-bottom: 2px solid #d4af37;\n    margin-bottom: 15px;\n}\n.rk-a-nav-list {\n    list-style: none;\n    padding: 0;\n    margin: 0;\n}\n.rk-a-nav-list li {\n    margin-bottom: 8px;\n}\n.rk-a-nav-list a {\n    display: block;\n    padding: 10px 14px;\n    color: #005969;\n    text-decoration: none;\n    font-size: 15px;\n    border-radius: 6px;\n    border-left: 3px solid transparent;\n    transition: all 0.2s ease;\n}\n.rk-a-nav-list a:hover {\n    background: #f0f7fc;\n    border-left-color: #00AAFF;\n    color: #005969;\n}\n\n\/* 主内容区 *\/\n.rk-a-content {\n    flex: 1;\n    min-width: 0;\n}\n.rk-a-content h2 {\n    color: #005969;\n    font-size: 30px;\n    font-weight: 700;\n    margin: 0 0 20px 0;\n    padding-bottom: 12px;\n    border-bottom: 3px solid #d4af37;\n    display: inline-block;\n}\n.rk-a-content h3 {\n    color: #005969;\n    font-size: 22px;\n    font-weight: 600;\n    margin: 40px 0 18px 0;\n    scroll-margin-top: 20px;\n}\n.rk-a-content p {\n    font-size: 17px;\n    margin: 0 0 16px 0;\n    color: #3a3a3a;\n}\n.rk-a-highlight {\n    color: #00AAFF;\n    font-weight: 600;\n}\n.rk-a-gold {\n    color: #b87333;\n    font-weight: 600;\n}\n\n\/* 开篇介绍 *\/\n.rk-a-intro {\n    background: linear-gradient(135deg, #f0f7fc 0%, #ffffff 100%);\n    padding: 30px;\n    border-radius: 10px;\n    border-left: 5px solid #005969;\n}\n\n\/* 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h4 {\n    color: #005969;\n    font-size: 19px;\n    margin: 0 0 12px 0;\n}\n.rk-a-form-card p {\n    font-size: 16px;\n    margin: 0;\n    color: #555555;\n}\n\n\/* 应用场景 双列 *\/\n.rk-a-apps-grid {\n    display: grid;\n    grid-template-columns: 1fr 1fr;\n    gap: 20px;\n    margin-top: 25px;\n}\n.rk-a-app-item {\n    display: flex;\n    gap: 15px;\n    padding: 20px;\n    border: 1px solid #ebf2f7;\n    border-radius: 8px;\n}\n.rk-a-app-icon {\n    width: 40px;\n    height: 40px;\n    border-radius: 8px;\n    background: #005969;\n    flex-shrink: 0;\n    display: flex;\n    align-items: center;\n    justify-content: center;\n    color: #d4af37;\n    font-weight: 700;\n    font-size: 18px;\n}\n.rk-a-app-text h4 {\n    color: #005969;\n    font-size: 17px;\n    margin: 0 0 8px 0;\n}\n.rk-a-app-text ul {\n    margin: 0;\n    padding-left: 18px;\n    font-size: 15px;\n    color: #555555;\n}\n.rk-a-app-text li {\n    margin-bottom: 4px;\n}\n\n\/* 优势区 *\/\n.rk-a-advantage-box {\n    background: #005969;\n    color: #ffffff;\n    padding: 35px 30px;\n    border-radius: 10px;\n    margin-top: 40px;\n}\n.rk-a-advantage-box h3 {\n    color: #d4af37;\n    margin-top: 0;\n}\n.rk-a-advantage-box p {\n    color: #e8f4f8;\n    font-size: 17px;\n}\n.rk-a-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 12px 30px;\n    margin-top: 20px;\n}\n.rk-a-advantage-item {\n    font-size: 16px;\n    padding-left: 25px;\n    position: relative;\n}\n.rk-a-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n}\n\n\/* 品牌底部 *\/\n.rk-a-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 40px;\n}\n.rk-a-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n.rk-a-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n    text-align: center;\n}\n\n\/* 响应式 *\/\n@media screen and (max-width: 992px) {\n    .rk-layout-a-wrap {\n        flex-direction: column;\n    }\n    .rk-a-sidebar {\n        width: 100%;\n        position: static;\n    }\n    .rk-a-nav-list {\n        display: flex;\n        flex-wrap: wrap;\n        gap: 8px;\n    }\n    .rk-a-nav-list li {\n        margin-bottom: 0;\n    }\n    .rk-a-features-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n}\n@media screen and (max-width: 768px) {\n    .rk-layout-a-wrap {\n        padding: 20px 15px;\n    }\n    .rk-a-content h2 {\n        font-size: 24px;\n    }\n    .rk-a-content h3 {\n        font-size: 19px;\n    }\n    .rk-a-content p {\n        font-size: 15px;\n    }\n    .rk-a-intro {\n        padding: 22px;\n    }\n    .rk-a-features-grid,\n    .rk-a-forms-row,\n    .rk-a-apps-grid,\n    .rk-a-advantage-list {\n        grid-template-columns: 1fr;\n    }\n    .rk-a-advantage-box {\n        padding: 25px 20px;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-layout-a-wrap\"\u003e\n    \u003c!-- 侧边导航 --\u003e\n    \u003caside class=\"rk-a-sidebar\"\u003e\n        \u003cdiv class=\"rk-a-nav-title\"\u003eContents\u003c\/div\u003e\n        \u003cul class=\"rk-a-nav-list\"\u003e\n            \u003cli\u003e\u003ca href=\"#a-intro\"\u003eProduct Overview\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-features\"\u003eCore Characteristics\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-forms\"\u003eProduct Forms\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-apps\"\u003eApplications\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-advantages\"\u003eService Advantages\u003c\/a\u003e\u003c\/li\u003e\n        \u003c\/ul\u003e\n    \u003c\/aside\u003e\n\n    \u003c!-- 主内容 --\u003e\n    \u003cmain class=\"rk-a-content\"\u003e\n        \u003csection id=\"a-intro\" class=\"rk-a-intro\"\u003e\n            \u003ch2\u003ePremium Aluminum Alloy Tubes\u003c\/h2\u003e\n            \u003cp\u003e\u003cspan class=\"rk-a-highlight\"\u003eRapidKeen\u003c\/span\u003e supplies industrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. As a versatile heat-treatable alloy solution, our hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, making them a trusted choice for demanding industrial fabrication, precision engineering and lightweight structural applications.\u003c\/p\u003e\n            \u003cp\u003eWe produce seamless and precision-drawn aluminum tubes in a full range of outer diameters, wall thicknesses and custom lengths. Every tube is manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish, ready for direct assembly or secondary fabrication.\u003c\/p\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-features\"\u003e\n            \u003ch3\u003eCore Performance Characteristics\u003c\/h3\u003e\n            \u003cdiv class=\"rk-a-features-grid\"\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eHigh Strength-to-Weight Ratio\u003c\/h4\u003e\n                    \u003cp\u003eRemarkable structural strength while remaining significantly lighter than steel and copper alternatives. Reduces assembly weight, lowers transportation costs and improves energy efficiency.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n                    \u003cp\u003eNatural protective oxide layer delivers reliable resistance to atmospheric corrosion, moisture and common industrial chemicals. Performs well in both indoor and outdoor environments.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eSuperior Machinability\u003c\/h4\u003e\n                    \u003cp\u003eResponds exceptionally well to CNC machining, drilling, milling, bending and flaring. Produces clean burr-free cuts and holds tight tolerances through complex fabrication.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n                    \u003cp\u003eAccepts anodizing, powder coating, polishing and sandblasting. Anodized layers form a uniform, hard wear-resistant surface with enhanced corrosion protection.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n                    \u003cp\u003ePrecision extrusion and cold-drawing ensure strict control over OD, ID and wall thickness. Excellent concentricity and roundness for reliable fit in precision assemblies.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eThermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n                    \u003cp\u003eStrong thermal conductivity ideal for heat sinks and cooling systems. Reliable electrical conductivity for grounding elements and electrical housing components.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-forms\"\u003e\n            \u003ch3\u003eAvailable Product Forms \u0026amp; Specifications\u003c\/h3\u003e\n            \u003cp\u003e\u003cspan class=\"rk-a-gold\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n            \u003cdiv class=\"rk-a-forms-row\"\u003e\n                \u003cdiv class=\"rk-a-form-card\"\u003e\n                    \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n                    \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-form-card\"\u003e\n                    \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n                    \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-apps\"\u003e\n            \u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n            \u003cp\u003eOur aluminum alloy tubes are widely adopted across diverse industrial sectors. Below are the most common application areas we support:\u003c\/p\u003e\n            \u003cdiv class=\"rk-a-apps-grid\"\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e01\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eAutomation \u0026amp; Robotics\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                            \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                            \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                            \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                            \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e02\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eAutomotive \u0026amp; Transportation\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                            \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                            \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                            \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                            \u003cli\u003eCooling system piping\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e03\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eElectronics \u0026amp; Thermal\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                            \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                            \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                            \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                            \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e04\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eArchitectural \u0026amp; Construction\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                            \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                            \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                            \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                            \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e05\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003ePrecision Engineering\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                            \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                            \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                            \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                            \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e06\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eGeneral Manufacturing\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                            \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                            \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                            \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                            \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-advantages\"\u003e\n            \u003cdiv class=\"rk-a-advantage-box\"\u003e\n                \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n                \u003cp\u003e\u003cspan style=\"color:#d4af37; font-weight:600;\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n                \u003cdiv class=\"rk-a-advantage-list\"\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003cdiv class=\"rk-a-brand-footer\"\u003e\n            \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n            \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/main\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 20mm (0.787\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797429780539,"sku":null,"price":8.64,"currency_code":"USD","in_stock":true},{"title":"OD 20mm (0.787\") \/ WT 2mm (0.08\") \/ 500mm 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#777777;\n    text-align: center;\n}\n\n\/* 响应式 *\/\n@media screen and (max-width: 992px) {\n    .rk-layout-a-wrap {\n        flex-direction: column;\n    }\n    .rk-a-sidebar {\n        width: 100%;\n        position: static;\n    }\n    .rk-a-nav-list {\n        display: flex;\n        flex-wrap: wrap;\n        gap: 8px;\n    }\n    .rk-a-nav-list li {\n        margin-bottom: 0;\n    }\n    .rk-a-features-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n}\n@media screen and (max-width: 768px) {\n    .rk-layout-a-wrap {\n        padding: 20px 15px;\n    }\n    .rk-a-content h2 {\n        font-size: 24px;\n    }\n    .rk-a-content h3 {\n        font-size: 19px;\n    }\n    .rk-a-content p {\n        font-size: 15px;\n    }\n    .rk-a-intro {\n        padding: 22px;\n    }\n    .rk-a-features-grid,\n    .rk-a-forms-row,\n    .rk-a-apps-grid,\n    .rk-a-advantage-list {\n        grid-template-columns: 1fr;\n    }\n    .rk-a-advantage-box {\n        padding: 25px 20px;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-layout-a-wrap\"\u003e\n    \u003c!-- 侧边导航 --\u003e\n    \u003caside class=\"rk-a-sidebar\"\u003e\n        \u003cdiv class=\"rk-a-nav-title\"\u003eContents\u003c\/div\u003e\n        \u003cul class=\"rk-a-nav-list\"\u003e\n            \u003cli\u003e\u003ca href=\"#a-intro\"\u003eProduct Overview\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-features\"\u003eCore Characteristics\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-forms\"\u003eProduct Forms\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-apps\"\u003eApplications\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-advantages\"\u003eService Advantages\u003c\/a\u003e\u003c\/li\u003e\n        \u003c\/ul\u003e\n    \u003c\/aside\u003e\n\n    \u003c!-- 主内容 --\u003e\n    \u003cmain class=\"rk-a-content\"\u003e\n        \u003csection id=\"a-intro\" class=\"rk-a-intro\"\u003e\n            \u003ch2\u003ePremium Aluminum Alloy Tubes\u003c\/h2\u003e\n            \u003cp\u003e\u003cspan class=\"rk-a-highlight\"\u003eRapidKeen\u003c\/span\u003e supplies industrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. As a versatile heat-treatable alloy solution, our hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, making them a trusted choice for demanding industrial fabrication, precision engineering and lightweight structural applications.\u003c\/p\u003e\n            \u003cp\u003eWe produce seamless and precision-drawn aluminum tubes in a full range of outer diameters, wall thicknesses and custom lengths. Every tube is manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish, ready for direct assembly or secondary fabrication.\u003c\/p\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-features\"\u003e\n            \u003ch3\u003eCore Performance Characteristics\u003c\/h3\u003e\n            \u003cdiv class=\"rk-a-features-grid\"\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eHigh Strength-to-Weight Ratio\u003c\/h4\u003e\n                    \u003cp\u003eRemarkable structural strength while remaining significantly lighter than steel and copper alternatives. Reduces assembly weight, lowers transportation costs and improves energy efficiency.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n                    \u003cp\u003eNatural protective oxide layer delivers reliable resistance to atmospheric corrosion, moisture and common industrial chemicals. Performs well in both indoor and outdoor environments.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eSuperior Machinability\u003c\/h4\u003e\n                    \u003cp\u003eResponds exceptionally well to CNC machining, drilling, milling, bending and flaring. Produces clean burr-free cuts and holds tight tolerances through complex fabrication.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n                    \u003cp\u003eAccepts anodizing, powder coating, polishing and sandblasting. Anodized layers form a uniform, hard wear-resistant surface with enhanced corrosion protection.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n                    \u003cp\u003ePrecision extrusion and cold-drawing ensure strict control over OD, ID and wall thickness. Excellent concentricity and roundness for reliable fit in precision assemblies.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eThermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n                    \u003cp\u003eStrong thermal conductivity ideal for heat sinks and cooling systems. Reliable electrical conductivity for grounding elements and electrical housing components.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-forms\"\u003e\n            \u003ch3\u003eAvailable Product Forms \u0026amp; Specifications\u003c\/h3\u003e\n            \u003cp\u003e\u003cspan class=\"rk-a-gold\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n            \u003cdiv class=\"rk-a-forms-row\"\u003e\n                \u003cdiv class=\"rk-a-form-card\"\u003e\n                    \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n                    \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-form-card\"\u003e\n                    \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n                    \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-apps\"\u003e\n            \u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n            \u003cp\u003eOur aluminum alloy tubes are widely adopted across diverse industrial sectors. Below are the most common application areas we support:\u003c\/p\u003e\n            \u003cdiv class=\"rk-a-apps-grid\"\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e01\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eAutomation \u0026amp; Robotics\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                            \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                            \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                            \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                            \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e02\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eAutomotive \u0026amp; Transportation\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                            \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                            \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                            \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                            \u003cli\u003eCooling system piping\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e03\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eElectronics \u0026amp; Thermal\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                            \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                            \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                            \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                            \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e04\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eArchitectural \u0026amp; Construction\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                            \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                            \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                            \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                            \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e05\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003ePrecision Engineering\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                            \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                            \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                            \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                            \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e06\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eGeneral Manufacturing\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                            \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                            \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                            \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                            \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-advantages\"\u003e\n            \u003cdiv class=\"rk-a-advantage-box\"\u003e\n                \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n                \u003cp\u003e\u003cspan style=\"color:#d4af37; font-weight:600;\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n                \u003cdiv class=\"rk-a-advantage-list\"\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003cdiv class=\"rk-a-brand-footer\"\u003e\n            \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n            \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/main\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 21mm (0.826\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797436727355,"sku":null,"price":8.68,"currency_code":"USD","in_stock":true},{"title":"OD 21mm (0.826\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797436760123,"sku":null,"price":11.74,"currency_code":"USD","in_stock":true},{"title":"OD 21mm (0.826\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797436792891,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 21mm (0.826\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797436825659,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 21mm (0.826\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797436858427,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797434433595,"sku":null,"price":3.52,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797434466363,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797434499131,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797434531899,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797434564667,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797434597435,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797434630203,"sku":null,"price":4.26,"currency_code":"USD","in_stock":true},{"title":"OD 6mm (0.236\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797434662971,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797434695739,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797434728507,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797434761275,"sku":null,"price":4.27,"currency_code":"USD","in_stock":true},{"title":"OD 7mm (0.276\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797434794043,"sku":null,"price":4.88,"currency_code":"USD","in_stock":true},{"title":"OD 7mm (0.276\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797434826811,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797434859579,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797434892347,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 8mm (0.315\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797434925115,"sku":null,"price":4.52,"currency_code":"USD","in_stock":true},{"title":"OD 8mm (0.315\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797434957883,"sku":null,"price":5.25,"currency_code":"USD","in_stock":true},{"title":"OD 8mm (0.315\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797434990651,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 8mm (0.315\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797435023419,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 8mm (0.315\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797435056187,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 9mm (0.354\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797435088955,"sku":null,"price":4.88,"currency_code":"USD","in_stock":true},{"title":"OD 9mm (0.354\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797435121723,"sku":null,"price":6.12,"currency_code":"USD","in_stock":true},{"title":"OD 9mm (0.354\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797435154491,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 9mm (0.354\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797435187259,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 9mm (0.354\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797435220027,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 10mm (0.394\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797435252795,"sku":null,"price":4.98,"currency_code":"USD","in_stock":true},{"title":"OD 10mm (0.394\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797435285563,"sku":null,"price":6.22,"currency_code":"USD","in_stock":true},{"title":"OD 10mm (0.394\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797435318331,"sku":null,"price":7.0,"currency_code":"USD","in_stock":true},{"title":"OD 10mm (0.394\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797435351099,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 10mm (0.394\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797435383867,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 12mm (0.472\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797435416635,"sku":null,"price":5.5,"currency_code":"USD","in_stock":true},{"title":"OD 12mm (0.472\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797435449403,"sku":null,"price":6.74,"currency_code":"USD","in_stock":true},{"title":"OD 12mm (0.472\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797435482171,"sku":null,"price":8.24,"currency_code":"USD","in_stock":true},{"title":"OD 12mm (0.472\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797435514939,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 12mm (0.472\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797435547707,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 13mm (0.512\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797435580475,"sku":null,"price":5.52,"currency_code":"USD","in_stock":true},{"title":"OD 13mm (0.512\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797435613243,"sku":null,"price":7.36,"currency_code":"USD","in_stock":true},{"title":"OD 13mm (0.512\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797435646011,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 13mm (0.512\") \/ WT 4mm (0.157\") \/ 500mm 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h4 {\n    color: #005969;\n    font-size: 19px;\n    margin: 0 0 12px 0;\n}\n.rk-a-form-card p {\n    font-size: 16px;\n    margin: 0;\n    color: #555555;\n}\n\n\/* 应用场景 双列 *\/\n.rk-a-apps-grid {\n    display: grid;\n    grid-template-columns: 1fr 1fr;\n    gap: 20px;\n    margin-top: 25px;\n}\n.rk-a-app-item {\n    display: flex;\n    gap: 15px;\n    padding: 20px;\n    border: 1px solid #ebf2f7;\n    border-radius: 8px;\n}\n.rk-a-app-icon {\n    width: 40px;\n    height: 40px;\n    border-radius: 8px;\n    background: #005969;\n    flex-shrink: 0;\n    display: flex;\n    align-items: center;\n    justify-content: center;\n    color: #d4af37;\n    font-weight: 700;\n    font-size: 18px;\n}\n.rk-a-app-text h4 {\n    color: #005969;\n    font-size: 17px;\n    margin: 0 0 8px 0;\n}\n.rk-a-app-text ul {\n    margin: 0;\n    padding-left: 18px;\n    font-size: 15px;\n    color: #555555;\n}\n.rk-a-app-text li {\n    margin-bottom: 4px;\n}\n\n\/* 优势区 *\/\n.rk-a-advantage-box {\n    background: #005969;\n    color: #ffffff;\n    padding: 35px 30px;\n    border-radius: 10px;\n    margin-top: 40px;\n}\n.rk-a-advantage-box h3 {\n    color: #d4af37;\n    margin-top: 0;\n}\n.rk-a-advantage-box p {\n    color: #e8f4f8;\n    font-size: 17px;\n}\n.rk-a-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 12px 30px;\n    margin-top: 20px;\n}\n.rk-a-advantage-item {\n    font-size: 16px;\n    padding-left: 25px;\n    position: relative;\n}\n.rk-a-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n}\n\n\/* 品牌底部 *\/\n.rk-a-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 40px;\n}\n.rk-a-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n.rk-a-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n    text-align: center;\n}\n\n\/* 响应式 *\/\n@media screen and (max-width: 992px) {\n    .rk-layout-a-wrap {\n        flex-direction: column;\n    }\n    .rk-a-sidebar {\n        width: 100%;\n        position: static;\n    }\n    .rk-a-nav-list {\n        display: flex;\n        flex-wrap: wrap;\n        gap: 8px;\n    }\n    .rk-a-nav-list li {\n        margin-bottom: 0;\n    }\n    .rk-a-features-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n}\n@media screen and (max-width: 768px) {\n    .rk-layout-a-wrap {\n        padding: 20px 15px;\n    }\n    .rk-a-content h2 {\n        font-size: 24px;\n    }\n    .rk-a-content h3 {\n        font-size: 19px;\n    }\n    .rk-a-content p {\n        font-size: 15px;\n    }\n    .rk-a-intro {\n        padding: 22px;\n    }\n    .rk-a-features-grid,\n    .rk-a-forms-row,\n    .rk-a-apps-grid,\n    .rk-a-advantage-list {\n        grid-template-columns: 1fr;\n    }\n    .rk-a-advantage-box {\n        padding: 25px 20px;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-layout-a-wrap\"\u003e\n    \u003c!-- 侧边导航 --\u003e\n    \u003caside class=\"rk-a-sidebar\"\u003e\n        \u003cdiv class=\"rk-a-nav-title\"\u003eContents\u003c\/div\u003e\n        \u003cul class=\"rk-a-nav-list\"\u003e\n            \u003cli\u003e\u003ca href=\"#a-intro\"\u003eProduct Overview\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-features\"\u003eCore Characteristics\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-forms\"\u003eProduct Forms\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-apps\"\u003eApplications\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-advantages\"\u003eService Advantages\u003c\/a\u003e\u003c\/li\u003e\n        \u003c\/ul\u003e\n    \u003c\/aside\u003e\n\n    \u003c!-- 主内容 --\u003e\n    \u003cmain class=\"rk-a-content\"\u003e\n        \u003csection id=\"a-intro\" class=\"rk-a-intro\"\u003e\n            \u003ch2\u003ePremium Aluminum Alloy Tubes\u003c\/h2\u003e\n            \u003cp\u003e\u003cspan class=\"rk-a-highlight\"\u003eRapidKeen\u003c\/span\u003e supplies industrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. As a versatile heat-treatable alloy solution, our hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, making them a trusted choice for demanding industrial fabrication, precision engineering and lightweight structural applications.\u003c\/p\u003e\n            \u003cp\u003eWe produce seamless and precision-drawn aluminum tubes in a full range of outer diameters, wall thicknesses and custom lengths. Every tube is manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish, ready for direct assembly or secondary fabrication.\u003c\/p\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-features\"\u003e\n            \u003ch3\u003eCore Performance Characteristics\u003c\/h3\u003e\n            \u003cdiv class=\"rk-a-features-grid\"\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eHigh Strength-to-Weight Ratio\u003c\/h4\u003e\n                    \u003cp\u003eRemarkable structural strength while remaining significantly lighter than steel and copper alternatives. Reduces assembly weight, lowers transportation costs and improves energy efficiency.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n                    \u003cp\u003eNatural protective oxide layer delivers reliable resistance to atmospheric corrosion, moisture and common industrial chemicals. Performs well in both indoor and outdoor environments.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eSuperior Machinability\u003c\/h4\u003e\n                    \u003cp\u003eResponds exceptionally well to CNC machining, drilling, milling, bending and flaring. Produces clean burr-free cuts and holds tight tolerances through complex fabrication.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n                    \u003cp\u003eAccepts anodizing, powder coating, polishing and sandblasting. Anodized layers form a uniform, hard wear-resistant surface with enhanced corrosion protection.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n                    \u003cp\u003ePrecision extrusion and cold-drawing ensure strict control over OD, ID and wall thickness. Excellent concentricity and roundness for reliable fit in precision assemblies.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eThermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n                    \u003cp\u003eStrong thermal conductivity ideal for heat sinks and cooling systems. Reliable electrical conductivity for grounding elements and electrical housing components.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-forms\"\u003e\n            \u003ch3\u003eAvailable Product Forms \u0026amp; Specifications\u003c\/h3\u003e\n            \u003cp\u003e\u003cspan class=\"rk-a-gold\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n            \u003cdiv class=\"rk-a-forms-row\"\u003e\n                \u003cdiv class=\"rk-a-form-card\"\u003e\n                    \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n                    \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-form-card\"\u003e\n                    \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n                    \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-apps\"\u003e\n            \u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n            \u003cp\u003eOur aluminum alloy tubes are widely adopted across diverse industrial sectors. Below are the most common application areas we support:\u003c\/p\u003e\n            \u003cdiv class=\"rk-a-apps-grid\"\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e01\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eAutomation \u0026amp; Robotics\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                            \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                            \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                            \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                            \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e02\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eAutomotive \u0026amp; Transportation\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                            \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                            \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                            \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                            \u003cli\u003eCooling system piping\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e03\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eElectronics \u0026amp; Thermal\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                            \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                            \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                            \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                            \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e04\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eArchitectural \u0026amp; Construction\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                            \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                            \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                            \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                            \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e05\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003ePrecision Engineering\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                            \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                            \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                            \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                            \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e06\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eGeneral Manufacturing\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                            \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                            \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                            \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                            \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-advantages\"\u003e\n            \u003cdiv class=\"rk-a-advantage-box\"\u003e\n                \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n                \u003cp\u003e\u003cspan style=\"color:#d4af37; font-weight:600;\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n                \u003cdiv class=\"rk-a-advantage-list\"\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003cdiv class=\"rk-a-brand-footer\"\u003e\n            \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n            \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/main\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 22mm (0.866\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797443149883,"sku":null,"price":9.84,"currency_code":"USD","in_stock":true},{"title":"OD 22mm (0.866\") \/ WT 2mm (0.08\") \/ 500mm 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(19.7\")","offer_id":43797444689979,"sku":null,"price":30.5,"currency_code":"USD","in_stock":true},{"title":"OD 48mm (1.89\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797444722747,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 48mm (1.89\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797444755515,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 50mm (1.969\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797444788283,"sku":null,"price":16.8,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797444821051,"sku":null,"price":23.52,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797444853819,"sku":null,"price":34.12,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797444886587,"sku":null,"price":40.32,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797444919355,"sku":null,"price":46.54,"currency_code":"USD","in_stock":true},{"title":"OD 55mm (2.165\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797444952123,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797444984891,"sku":null,"price":25.58,"currency_code":"USD","in_stock":true},{"title":"OD 55mm (2.165\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797445017659,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797445050427,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797445083195,"sku":null,"price":49.64,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797445115963,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 60mm (2.362\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797445148731,"sku":null,"price":30.5,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797445181499,"sku":null,"price":37.22,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797445214267,"sku":null,"price":50.66,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797445247035,"sku":null,"price":58.94,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797445279803,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797445312571,"sku":null,"price":34.88,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797445345339,"sku":null,"price":50.4,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797445378107,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797445410875,"sku":null,"price":79.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/hollowroundtube.webp?v=1784130024"},{"product_id":"precision-hollow-aluminum-alloy-tubes-industrial-custom-round-tubing-7","title":"Aluminum Alloy Tube OD 23mm (0.905\") custom","description":"\u003cstyle\u003e\n.rk-layout-a-wrap {\n    width: 100%;\n    max-width: 1280px;\n    margin: 0 auto;\n    padding: 30px 20px;\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n    color: #333333;\n    line-height: 1.75;\n    box-sizing: border-box;\n    display: flex;\n    gap: 35px;\n}\n\n\/* 侧边导航 *\/\n.rk-a-sidebar {\n    width: 220px;\n    flex-shrink: 0;\n    position: sticky;\n    top: 30px;\n    align-self: flex-start;\n}\n.rk-a-nav-title {\n    color: #005969;\n    font-size: 18px;\n    font-weight: 700;\n    padding-bottom: 12px;\n    border-bottom: 2px solid #d4af37;\n    margin-bottom: 15px;\n}\n.rk-a-nav-list {\n    list-style: none;\n    padding: 0;\n    margin: 0;\n}\n.rk-a-nav-list li {\n    margin-bottom: 8px;\n}\n.rk-a-nav-list a {\n    display: block;\n    padding: 10px 14px;\n    color: #005969;\n    text-decoration: none;\n    font-size: 15px;\n    border-radius: 6px;\n    border-left: 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#777777;\n    text-align: center;\n}\n\n\/* 响应式 *\/\n@media screen and (max-width: 992px) {\n    .rk-layout-a-wrap {\n        flex-direction: column;\n    }\n    .rk-a-sidebar {\n        width: 100%;\n        position: static;\n    }\n    .rk-a-nav-list {\n        display: flex;\n        flex-wrap: wrap;\n        gap: 8px;\n    }\n    .rk-a-nav-list li {\n        margin-bottom: 0;\n    }\n    .rk-a-features-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n}\n@media screen and (max-width: 768px) {\n    .rk-layout-a-wrap {\n        padding: 20px 15px;\n    }\n    .rk-a-content h2 {\n        font-size: 24px;\n    }\n    .rk-a-content h3 {\n        font-size: 19px;\n    }\n    .rk-a-content p {\n        font-size: 15px;\n    }\n    .rk-a-intro {\n        padding: 22px;\n    }\n    .rk-a-features-grid,\n    .rk-a-forms-row,\n    .rk-a-apps-grid,\n    .rk-a-advantage-list {\n        grid-template-columns: 1fr;\n    }\n    .rk-a-advantage-box {\n        padding: 25px 20px;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-layout-a-wrap\"\u003e\n    \u003c!-- 侧边导航 --\u003e\n    \u003caside class=\"rk-a-sidebar\"\u003e\n        \u003cdiv class=\"rk-a-nav-title\"\u003eContents\u003c\/div\u003e\n        \u003cul class=\"rk-a-nav-list\"\u003e\n            \u003cli\u003e\u003ca href=\"#a-intro\"\u003eProduct Overview\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-features\"\u003eCore Characteristics\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-forms\"\u003eProduct Forms\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-apps\"\u003eApplications\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-advantages\"\u003eService Advantages\u003c\/a\u003e\u003c\/li\u003e\n        \u003c\/ul\u003e\n    \u003c\/aside\u003e\n\n    \u003c!-- 主内容 --\u003e\n    \u003cmain class=\"rk-a-content\"\u003e\n        \u003csection id=\"a-intro\" class=\"rk-a-intro\"\u003e\n            \u003ch2\u003ePremium Aluminum Alloy Tubes\u003c\/h2\u003e\n            \u003cp\u003e\u003cspan class=\"rk-a-highlight\"\u003eRapidKeen\u003c\/span\u003e supplies industrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. As a versatile heat-treatable alloy solution, our hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, making them a trusted choice for demanding industrial fabrication, precision engineering and lightweight structural applications.\u003c\/p\u003e\n            \u003cp\u003eWe produce seamless and precision-drawn aluminum tubes in a full range of outer diameters, wall thicknesses and custom lengths. Every tube is manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish, ready for direct assembly or secondary fabrication.\u003c\/p\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-features\"\u003e\n            \u003ch3\u003eCore Performance Characteristics\u003c\/h3\u003e\n            \u003cdiv class=\"rk-a-features-grid\"\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eHigh Strength-to-Weight Ratio\u003c\/h4\u003e\n                    \u003cp\u003eRemarkable structural strength while remaining significantly lighter than steel and copper alternatives. Reduces assembly weight, lowers transportation costs and improves energy efficiency.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n                    \u003cp\u003eNatural protective oxide layer delivers reliable resistance to atmospheric corrosion, moisture and common industrial chemicals. Performs well in both indoor and outdoor environments.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eSuperior Machinability\u003c\/h4\u003e\n                    \u003cp\u003eResponds exceptionally well to CNC machining, drilling, milling, bending and flaring. Produces clean burr-free cuts and holds tight tolerances through complex fabrication.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n                    \u003cp\u003eAccepts anodizing, powder coating, polishing and sandblasting. Anodized layers form a uniform, hard wear-resistant surface with enhanced corrosion protection.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n                    \u003cp\u003ePrecision extrusion and cold-drawing ensure strict control over OD, ID and wall thickness. Excellent concentricity and roundness for reliable fit in precision assemblies.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eThermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n                    \u003cp\u003eStrong thermal conductivity ideal for heat sinks and cooling systems. Reliable electrical conductivity for grounding elements and electrical housing components.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-forms\"\u003e\n            \u003ch3\u003eAvailable Product Forms \u0026amp; Specifications\u003c\/h3\u003e\n            \u003cp\u003e\u003cspan class=\"rk-a-gold\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n            \u003cdiv class=\"rk-a-forms-row\"\u003e\n                \u003cdiv class=\"rk-a-form-card\"\u003e\n                    \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n                    \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-form-card\"\u003e\n                    \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n                    \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-apps\"\u003e\n            \u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n            \u003cp\u003eOur aluminum alloy tubes are widely adopted across diverse industrial sectors. Below are the most common application areas we support:\u003c\/p\u003e\n            \u003cdiv class=\"rk-a-apps-grid\"\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e01\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eAutomation \u0026amp; Robotics\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                            \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                            \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                            \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                            \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e02\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eAutomotive \u0026amp; Transportation\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                            \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                            \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                            \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                            \u003cli\u003eCooling system piping\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e03\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eElectronics \u0026amp; Thermal\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                            \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                            \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                            \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                            \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e04\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eArchitectural \u0026amp; Construction\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                            \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                            \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                            \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                            \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e05\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003ePrecision Engineering\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                            \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                            \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                            \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                            \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e06\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eGeneral Manufacturing\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                            \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                            \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                            \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                            \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-advantages\"\u003e\n            \u003cdiv class=\"rk-a-advantage-box\"\u003e\n                \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n                \u003cp\u003e\u003cspan style=\"color:#d4af37; font-weight:600;\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n                \u003cdiv class=\"rk-a-advantage-list\"\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003cdiv class=\"rk-a-brand-footer\"\u003e\n            \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n            \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/main\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 23mm (0.905\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797454356539,"sku":null,"price":9.22,"currency_code":"USD","in_stock":true},{"title":"OD 23mm (0.905\") \/ WT 2mm (0.08\") \/ 500mm 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(19.7\")","offer_id":43797452193851,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 8mm (0.315\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797452226619,"sku":null,"price":4.52,"currency_code":"USD","in_stock":true},{"title":"OD 8mm (0.315\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797452259387,"sku":null,"price":5.25,"currency_code":"USD","in_stock":true},{"title":"OD 8mm (0.315\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797452292155,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 8mm (0.315\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797452324923,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 8mm (0.315\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797452357691,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 9mm (0.354\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797452390459,"sku":null,"price":4.88,"currency_code":"USD","in_stock":true},{"title":"OD 9mm (0.354\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797452423227,"sku":null,"price":6.12,"currency_code":"USD","in_stock":true},{"title":"OD 9mm (0.354\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797452455995,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 9mm (0.354\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797452488763,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 9mm (0.354\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797452521531,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 10mm (0.394\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797452554299,"sku":null,"price":4.98,"currency_code":"USD","in_stock":true},{"title":"OD 10mm (0.394\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797452587067,"sku":null,"price":6.22,"currency_code":"USD","in_stock":true},{"title":"OD 10mm (0.394\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797452619835,"sku":null,"price":7.0,"currency_code":"USD","in_stock":true},{"title":"OD 10mm (0.394\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797452652603,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 10mm (0.394\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797452685371,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 12mm (0.472\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797452718139,"sku":null,"price":5.5,"currency_code":"USD","in_stock":true},{"title":"OD 12mm (0.472\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797452750907,"sku":null,"price":6.74,"currency_code":"USD","in_stock":true},{"title":"OD 12mm (0.472\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797452783675,"sku":null,"price":8.24,"currency_code":"USD","in_stock":true},{"title":"OD 12mm (0.472\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797452816443,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 12mm (0.472\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797452849211,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 13mm (0.512\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797452881979,"sku":null,"price":5.52,"currency_code":"USD","in_stock":true},{"title":"OD 13mm (0.512\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797452914747,"sku":null,"price":7.36,"currency_code":"USD","in_stock":true},{"title":"OD 13mm (0.512\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797452947515,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 13mm (0.512\") \/ WT 4mm (0.157\") \/ 500mm 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background: #005969;\n    color: #ffffff;\n    padding: 35px 30px;\n    border-radius: 10px;\n    margin-top: 40px;\n}\n.rk-a-advantage-box h3 {\n    color: #d4af37;\n    margin-top: 0;\n}\n.rk-a-advantage-box p {\n    color: #e8f4f8;\n    font-size: 17px;\n}\n.rk-a-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 12px 30px;\n    margin-top: 20px;\n}\n.rk-a-advantage-item {\n    font-size: 16px;\n    padding-left: 25px;\n    position: relative;\n}\n.rk-a-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n}\n\n\/* 品牌底部 *\/\n.rk-a-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 40px;\n}\n.rk-a-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n.rk-a-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n    text-align: center;\n}\n\n\/* 响应式 *\/\n@media screen and (max-width: 992px) {\n    .rk-layout-a-wrap {\n        flex-direction: column;\n    }\n    .rk-a-sidebar {\n        width: 100%;\n        position: static;\n    }\n    .rk-a-nav-list {\n        display: flex;\n        flex-wrap: wrap;\n        gap: 8px;\n    }\n    .rk-a-nav-list li {\n        margin-bottom: 0;\n    }\n    .rk-a-features-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n}\n@media screen and (max-width: 768px) {\n    .rk-layout-a-wrap {\n        padding: 20px 15px;\n    }\n    .rk-a-content h2 {\n        font-size: 24px;\n    }\n    .rk-a-content h3 {\n        font-size: 19px;\n    }\n    .rk-a-content p {\n        font-size: 15px;\n    }\n    .rk-a-intro {\n        padding: 22px;\n    }\n    .rk-a-features-grid,\n    .rk-a-forms-row,\n    .rk-a-apps-grid,\n    .rk-a-advantage-list {\n        grid-template-columns: 1fr;\n    }\n    .rk-a-advantage-box {\n        padding: 25px 20px;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-layout-a-wrap\"\u003e\n    \u003c!-- 侧边导航 --\u003e\n    \u003caside class=\"rk-a-sidebar\"\u003e\n        \u003cdiv class=\"rk-a-nav-title\"\u003eContents\u003c\/div\u003e\n        \u003cul class=\"rk-a-nav-list\"\u003e\n            \u003cli\u003e\u003ca href=\"#a-intro\"\u003eProduct Overview\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-features\"\u003eCore Characteristics\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-forms\"\u003eProduct Forms\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-apps\"\u003eApplications\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-advantages\"\u003eService Advantages\u003c\/a\u003e\u003c\/li\u003e\n        \u003c\/ul\u003e\n    \u003c\/aside\u003e\n\n    \u003c!-- 主内容 --\u003e\n    \u003cmain class=\"rk-a-content\"\u003e\n        \u003csection id=\"a-intro\" class=\"rk-a-intro\"\u003e\n            \u003ch2\u003ePremium Aluminum Alloy Tubes\u003c\/h2\u003e\n            \u003cp\u003e\u003cspan class=\"rk-a-highlight\"\u003eRapidKeen\u003c\/span\u003e supplies industrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. As a versatile heat-treatable alloy solution, our hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, making them a trusted choice for demanding industrial fabrication, precision engineering and lightweight structural applications.\u003c\/p\u003e\n            \u003cp\u003eWe produce seamless and precision-drawn aluminum tubes in a full range of outer diameters, wall thicknesses and custom lengths. Every tube is manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish, ready for direct assembly or secondary fabrication.\u003c\/p\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-features\"\u003e\n            \u003ch3\u003eCore Performance Characteristics\u003c\/h3\u003e\n            \u003cdiv class=\"rk-a-features-grid\"\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eHigh Strength-to-Weight Ratio\u003c\/h4\u003e\n                    \u003cp\u003eRemarkable structural strength while remaining significantly lighter than steel and copper alternatives. Reduces assembly weight, lowers transportation costs and improves energy efficiency.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n                    \u003cp\u003eNatural protective oxide layer delivers reliable resistance to atmospheric corrosion, moisture and common industrial chemicals. Performs well in both indoor and outdoor environments.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eSuperior Machinability\u003c\/h4\u003e\n                    \u003cp\u003eResponds exceptionally well to CNC machining, drilling, milling, bending and flaring. Produces clean burr-free cuts and holds tight tolerances through complex fabrication.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n                    \u003cp\u003eAccepts anodizing, powder coating, polishing and sandblasting. Anodized layers form a uniform, hard wear-resistant surface with enhanced corrosion protection.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n                    \u003cp\u003ePrecision extrusion and cold-drawing ensure strict control over OD, ID and wall thickness. Excellent concentricity and roundness for reliable fit in precision assemblies.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eThermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n                    \u003cp\u003eStrong thermal conductivity ideal for heat sinks and cooling systems. Reliable electrical conductivity for grounding elements and electrical housing components.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-forms\"\u003e\n            \u003ch3\u003eAvailable Product Forms \u0026amp; Specifications\u003c\/h3\u003e\n            \u003cp\u003e\u003cspan class=\"rk-a-gold\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n            \u003cdiv class=\"rk-a-forms-row\"\u003e\n                \u003cdiv class=\"rk-a-form-card\"\u003e\n                    \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n                    \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-form-card\"\u003e\n                    \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n                    \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-apps\"\u003e\n            \u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n            \u003cp\u003eOur aluminum alloy tubes are widely adopted across diverse industrial sectors. Below are the most common application areas we support:\u003c\/p\u003e\n            \u003cdiv class=\"rk-a-apps-grid\"\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e01\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eAutomation \u0026amp; Robotics\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                            \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                            \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                            \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                            \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e02\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eAutomotive \u0026amp; Transportation\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                            \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                            \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                            \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                            \u003cli\u003eCooling system piping\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e03\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eElectronics \u0026amp; Thermal\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                            \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                            \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                            \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                            \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e04\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eArchitectural \u0026amp; Construction\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                            \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                            \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                            \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                            \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e05\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003ePrecision Engineering\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                            \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                            \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                            \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                            \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e06\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eGeneral Manufacturing\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                            \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                            \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                            \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                            \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-advantages\"\u003e\n            \u003cdiv class=\"rk-a-advantage-box\"\u003e\n                \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n                \u003cp\u003e\u003cspan style=\"color:#d4af37; font-weight:600;\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n                \u003cdiv class=\"rk-a-advantage-list\"\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003cdiv class=\"rk-a-brand-footer\"\u003e\n            \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n            \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/main\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 24mm (0.945\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797462319163,"sku":null,"price":11.09,"currency_code":"USD","in_stock":true},{"title":"OD 24mm (0.945\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797462351931,"sku":null,"price":11.72,"currency_code":"USD","in_stock":true},{"title":"OD 24mm (0.945\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797462384699,"sku":null,"price":15.36,"currency_code":"USD","in_stock":true},{"title":"OD 24mm (0.945\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797462417467,"sku":null,"price":19.48,"currency_code":"USD","in_stock":true},{"title":"OD 24mm (0.945\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797462450235,"sku":null,"price":23.2,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797459533883,"sku":null,"price":3.52,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797459566651,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797459599419,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797459632187,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797459664955,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797459697723,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797459730491,"sku":null,"price":4.26,"currency_code":"USD","in_stock":true},{"title":"OD 6mm (0.236\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797459763259,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 4mm (0.157\") \/ 500mm 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(19.7\")","offer_id":43797463531579,"sku":null,"price":30.5,"currency_code":"USD","in_stock":true},{"title":"OD 48mm (1.89\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797463564347,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 48mm (1.89\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797463597115,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 50mm (1.969\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797463629883,"sku":null,"price":16.8,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797463662651,"sku":null,"price":23.52,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797463695419,"sku":null,"price":34.12,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797463728187,"sku":null,"price":40.32,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797463760955,"sku":null,"price":46.54,"currency_code":"USD","in_stock":true},{"title":"OD 55mm (2.165\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797463793723,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797463826491,"sku":null,"price":25.58,"currency_code":"USD","in_stock":true},{"title":"OD 55mm (2.165\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797463859259,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797463892027,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797463924795,"sku":null,"price":49.64,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797463957563,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 60mm (2.362\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797463990331,"sku":null,"price":30.5,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797464023099,"sku":null,"price":37.22,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797464055867,"sku":null,"price":50.66,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797464088635,"sku":null,"price":58.94,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797464121403,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797464154171,"sku":null,"price":34.88,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797464186939,"sku":null,"price":50.4,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797464219707,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797464252475,"sku":null,"price":79.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/hollowroundtube.webp?v=1784130024"},{"product_id":"precision-hollow-aluminum-alloy-tubes-industrial-custom-round-tubing-9","title":"Aluminum Alloy Tube OD 25mm (1\") custom","description":"\u003cstyle\u003e\n.rk-layout-a-wrap {\n    width: 100%;\n    max-width: 1280px;\n    margin: 0 auto;\n    padding: 30px 20px;\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n    color: #333333;\n    line-height: 1.75;\n    box-sizing: border-box;\n    display: flex;\n    gap: 35px;\n}\n\n\/* 侧边导航 *\/\n.rk-a-sidebar {\n    width: 220px;\n    flex-shrink: 0;\n    position: sticky;\n    top: 30px;\n    align-self: flex-start;\n}\n.rk-a-nav-title {\n    color: #005969;\n    font-size: 18px;\n    font-weight: 700;\n    padding-bottom: 12px;\n    border-bottom: 2px solid #d4af37;\n    margin-bottom: 15px;\n}\n.rk-a-nav-list {\n    list-style: none;\n    padding: 0;\n    margin: 0;\n}\n.rk-a-nav-list li {\n    margin-bottom: 8px;\n}\n.rk-a-nav-list a {\n    display: block;\n    padding: 10px 14px;\n    color: #005969;\n    text-decoration: none;\n    font-size: 15px;\n    border-radius: 6px;\n    border-left: 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background: #005969;\n    color: #ffffff;\n    padding: 35px 30px;\n    border-radius: 10px;\n    margin-top: 40px;\n}\n.rk-a-advantage-box h3 {\n    color: #d4af37;\n    margin-top: 0;\n}\n.rk-a-advantage-box p {\n    color: #e8f4f8;\n    font-size: 17px;\n}\n.rk-a-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 12px 30px;\n    margin-top: 20px;\n}\n.rk-a-advantage-item {\n    font-size: 16px;\n    padding-left: 25px;\n    position: relative;\n}\n.rk-a-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n}\n\n\/* 品牌底部 *\/\n.rk-a-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 40px;\n}\n.rk-a-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n.rk-a-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n    text-align: center;\n}\n\n\/* 响应式 *\/\n@media screen and (max-width: 992px) {\n    .rk-layout-a-wrap {\n        flex-direction: column;\n    }\n    .rk-a-sidebar {\n        width: 100%;\n        position: static;\n    }\n    .rk-a-nav-list {\n        display: flex;\n        flex-wrap: wrap;\n        gap: 8px;\n    }\n    .rk-a-nav-list li {\n        margin-bottom: 0;\n    }\n    .rk-a-features-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n}\n@media screen and (max-width: 768px) {\n    .rk-layout-a-wrap {\n        padding: 20px 15px;\n    }\n    .rk-a-content h2 {\n        font-size: 24px;\n    }\n    .rk-a-content h3 {\n        font-size: 19px;\n    }\n    .rk-a-content p {\n        font-size: 15px;\n    }\n    .rk-a-intro {\n        padding: 22px;\n    }\n    .rk-a-features-grid,\n    .rk-a-forms-row,\n    .rk-a-apps-grid,\n    .rk-a-advantage-list {\n        grid-template-columns: 1fr;\n    }\n    .rk-a-advantage-box {\n        padding: 25px 20px;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-layout-a-wrap\"\u003e\n    \u003c!-- 侧边导航 --\u003e\n    \u003caside class=\"rk-a-sidebar\"\u003e\n        \u003cdiv class=\"rk-a-nav-title\"\u003eContents\u003c\/div\u003e\n        \u003cul class=\"rk-a-nav-list\"\u003e\n            \u003cli\u003e\u003ca href=\"#a-intro\"\u003eProduct Overview\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-features\"\u003eCore Characteristics\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-forms\"\u003eProduct Forms\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-apps\"\u003eApplications\u003c\/a\u003e\u003c\/li\u003e\n            \u003cli\u003e\u003ca href=\"#a-advantages\"\u003eService Advantages\u003c\/a\u003e\u003c\/li\u003e\n        \u003c\/ul\u003e\n    \u003c\/aside\u003e\n\n    \u003c!-- 主内容 --\u003e\n    \u003cmain class=\"rk-a-content\"\u003e\n        \u003csection id=\"a-intro\" class=\"rk-a-intro\"\u003e\n            \u003ch2\u003ePremium Aluminum Alloy Tubes\u003c\/h2\u003e\n            \u003cp\u003e\u003cspan class=\"rk-a-highlight\"\u003eRapidKeen\u003c\/span\u003e supplies industrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. As a versatile heat-treatable alloy solution, our hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, making them a trusted choice for demanding industrial fabrication, precision engineering and lightweight structural applications.\u003c\/p\u003e\n            \u003cp\u003eWe produce seamless and precision-drawn aluminum tubes in a full range of outer diameters, wall thicknesses and custom lengths. Every tube is manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish, ready for direct assembly or secondary fabrication.\u003c\/p\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-features\"\u003e\n            \u003ch3\u003eCore Performance Characteristics\u003c\/h3\u003e\n            \u003cdiv class=\"rk-a-features-grid\"\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eHigh Strength-to-Weight Ratio\u003c\/h4\u003e\n                    \u003cp\u003eRemarkable structural strength while remaining significantly lighter than steel and copper alternatives. Reduces assembly weight, lowers transportation costs and improves energy efficiency.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n                    \u003cp\u003eNatural protective oxide layer delivers reliable resistance to atmospheric corrosion, moisture and common industrial chemicals. Performs well in both indoor and outdoor environments.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eSuperior Machinability\u003c\/h4\u003e\n                    \u003cp\u003eResponds exceptionally well to CNC machining, drilling, milling, bending and flaring. Produces clean burr-free cuts and holds tight tolerances through complex fabrication.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n                    \u003cp\u003eAccepts anodizing, powder coating, polishing and sandblasting. Anodized layers form a uniform, hard wear-resistant surface with enhanced corrosion protection.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n                    \u003cp\u003ePrecision extrusion and cold-drawing ensure strict control over OD, ID and wall thickness. Excellent concentricity and roundness for reliable fit in precision assemblies.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-feature-item\"\u003e\n                    \u003ch4\u003eThermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n                    \u003cp\u003eStrong thermal conductivity ideal for heat sinks and cooling systems. Reliable electrical conductivity for grounding elements and electrical housing components.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-forms\"\u003e\n            \u003ch3\u003eAvailable Product Forms \u0026amp; Specifications\u003c\/h3\u003e\n            \u003cp\u003e\u003cspan class=\"rk-a-gold\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n            \u003cdiv class=\"rk-a-forms-row\"\u003e\n                \u003cdiv class=\"rk-a-form-card\"\u003e\n                    \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n                    \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-form-card\"\u003e\n                    \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n                    \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-apps\"\u003e\n            \u003ch3\u003eTypical Industrial Applications\u003c\/h3\u003e\n            \u003cp\u003eOur aluminum alloy tubes are widely adopted across diverse industrial sectors. Below are the most common application areas we support:\u003c\/p\u003e\n            \u003cdiv class=\"rk-a-apps-grid\"\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e01\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eAutomation \u0026amp; Robotics\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                            \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                            \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                            \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                            \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e02\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eAutomotive \u0026amp; Transportation\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                            \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                            \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                            \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                            \u003cli\u003eCooling system piping\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e03\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eElectronics \u0026amp; Thermal\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                            \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                            \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                            \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                            \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e04\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eArchitectural \u0026amp; Construction\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                            \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                            \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                            \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                            \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e05\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003ePrecision Engineering\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                            \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                            \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                            \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                            \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n                \u003cdiv class=\"rk-a-app-item\"\u003e\n                    \u003cdiv class=\"rk-a-app-icon\"\u003e06\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-app-text\"\u003e\n                        \u003ch4\u003eGeneral Manufacturing\u003c\/h4\u003e\n                        \u003cul\u003e\n                            \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                            \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                            \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                            \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                            \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                        \u003c\/ul\u003e\n                    \u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003csection id=\"a-advantages\"\u003e\n            \u003cdiv class=\"rk-a-advantage-box\"\u003e\n                \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n                \u003cp\u003e\u003cspan style=\"color:#d4af37; font-weight:600;\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n                \u003cdiv class=\"rk-a-advantage-list\"\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n                    \u003cdiv class=\"rk-a-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/section\u003e\n\n        \u003cdiv class=\"rk-a-brand-footer\"\u003e\n            \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n            \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n        \u003c\/div\u003e\n    \u003c\/main\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 25mm (1\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797468938299,"sku":null,"price":9.84,"currency_code":"USD","in_stock":true},{"title":"OD 25mm (1\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797468971067,"sku":null,"price":13.22,"currency_code":"USD","in_stock":true},{"title":"OD 25mm (1\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797469003835,"sku":null,"price":16.08,"currency_code":"USD","in_stock":true},{"title":"OD 25mm (1\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797469036603,"sku":null,"price":20.08,"currency_code":"USD","in_stock":true},{"title":"OD 25mm (1\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797469069371,"sku":null,"price":24.48,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797465989179,"sku":null,"price":3.52,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797466021947,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 3mm (0.12\") \/ 500mm 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(19.7\")","offer_id":43797466251323,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797466284091,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797466316859,"sku":null,"price":4.27,"currency_code":"USD","in_stock":true},{"title":"OD 7mm (0.276\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797466349627,"sku":null,"price":4.88,"currency_code":"USD","in_stock":true},{"title":"OD 7mm (0.276\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797466382395,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797466415163,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797466447931,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 8mm (0.315\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797466480699,"sku":null,"price":4.52,"currency_code":"USD","in_stock":true},{"title":"OD 8mm (0.315\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797466513467,"sku":null,"price":5.25,"currency_code":"USD","in_stock":true},{"title":"OD 8mm (0.315\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797466546235,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 8mm (0.315\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797466579003,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 8mm (0.315\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797466611771,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 9mm (0.354\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797466644539,"sku":null,"price":4.88,"currency_code":"USD","in_stock":true},{"title":"OD 9mm (0.354\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797466677307,"sku":null,"price":6.12,"currency_code":"USD","in_stock":true},{"title":"OD 9mm (0.354\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797466710075,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 9mm (0.354\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797466742843,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 9mm (0.354\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797466775611,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 10mm (0.394\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797466808379,"sku":null,"price":4.98,"currency_code":"USD","in_stock":true},{"title":"OD 10mm (0.394\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797466841147,"sku":null,"price":6.22,"currency_code":"USD","in_stock":true},{"title":"OD 10mm (0.394\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797466873915,"sku":null,"price":7.0,"currency_code":"USD","in_stock":true},{"title":"OD 10mm (0.394\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797466906683,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 10mm (0.394\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797466939451,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 12mm (0.472\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797466972219,"sku":null,"price":5.5,"currency_code":"USD","in_stock":true},{"title":"OD 12mm (0.472\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797467004987,"sku":null,"price":6.74,"currency_code":"USD","in_stock":true},{"title":"OD 12mm (0.472\") \/ WT 3mm (0.12\") \/ 500mm 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background: linear-gradient(135deg, #fffdf7 0%, #ffffff 100%);\n}\n.rk-b-advantage-card h3 {\n    color: #b87333;\n    font-size: 22px;\n    margin: 0 0 15px 0;\n}\n.rk-b-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 12px 30px;\n    margin-top: 20px;\n}\n.rk-b-advantage-item {\n    font-size: 16px;\n    padding-left: 28px;\n    position: relative;\n    color: #444444;\n}\n.rk-b-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n    font-size: 18px;\n}\n\n\/* 品牌底部 *\/\n.rk-b-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 10px;\n}\n.rk-b-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n.rk-b-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n    text-align: center;\n}\n\n\/* 响应式 *\/\n@media screen and (max-width: 992px) {\n    .rk-b-features-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n    .rk-b-apps-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n    .rk-b-form-item,\n    .rk-b-form-item.reverse {\n        flex-direction: column;\n    }\n    .rk-b-form-img {\n        width: 100%;\n        height: 140px;\n    }\n}\n@media screen and (max-width: 768px) {\n    .rk-layout-b-wrap {\n        padding: 0 15px 30px;\n    }\n    .rk-b-hero {\n        padding: 35px 25px;\n    }\n    .rk-b-hero h1 {\n        font-size: 26px;\n    }\n    .rk-b-hero p {\n        font-size: 15px;\n        max-width: 100%;\n    }\n    .rk-b-section-card {\n        padding: 25px 20px;\n        margin-bottom: 25px;\n    }\n    .rk-b-section-title {\n        font-size: 20px;\n    }\n    .rk-b-section-card p {\n        font-size: 15px;\n    }\n    .rk-b-features-grid,\n    .rk-b-apps-grid,\n    .rk-b-advantage-list {\n        grid-template-columns: 1fr;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-layout-b-wrap\"\u003e\n    \u003c!-- 顶部横幅 --\u003e\n    \u003cdiv class=\"rk-b-hero\"\u003e\n        \u003cspan class=\"rk-brand-tag\"\u003eRapidKeen Industrial\u003c\/span\u003e\n        \u003ch1\u003ePremium Aluminum Alloy Tubes\u003c\/h1\u003e\n        \u003cp\u003eIndustrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. Ideal for precision fabrication, structural engineering and custom manufacturing projects.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 核心特性 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eCore Performance Characteristics\u003c\/h3\u003e\n        \u003cp\u003eOur hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish.\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-features-grid\"\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e⚙\u003c\/div\u003e\n                \u003ch4\u003eHigh Strength-to-Weight Ratio\u003c\/h4\u003e\n                \u003cp\u003eRemarkable structural strength while far lighter than steel. Reduces assembly weight, lowers shipping costs and improves energy efficiency for automotive and robotics use.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e🛡\u003c\/div\u003e\n                \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n                \u003cp\u003eNatural oxide layer protects against moisture, air and common industrial chemicals. Reliable performance for both indoor and outdoor long-term service.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e🔧\u003c\/div\u003e\n                \u003ch4\u003eSuperior Machinability\u003c\/h4\u003e\n                \u003cp\u003eWorks perfectly with CNC machining, drilling, milling, bending and flaring. Clean burr-free cuts and stable tolerances for complex fabrication processes.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e✨\u003c\/div\u003e\n                \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n                \u003cp\u003eCompatible with anodizing, powder coating, polishing and sandblasting. Hard uniform anodized layer boosts wear resistance and visual quality.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e📏\u003c\/div\u003e\n                \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n                \u003cp\u003ePrecision extrusion and cold-drawing ensure accurate OD, ID and wall thickness. Excellent concentricity for precision fitting and mechanical assemblies.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e⚡\u003c\/div\u003e\n                \u003ch4\u003eThermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n                \u003cp\u003eStrong thermal performance for heat sinks and cooling systems. Reliable electrical conductivity for grounding and electronic housing parts.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 产品形态 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eAvailable Product Forms\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan class=\"rk-b-gold\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-b-form-item\"\u003e\n            \u003cdiv class=\"rk-b-form-img\"\u003eSeamless Tube\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-form-text\"\u003e\n                \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n                \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-b-form-item reverse\"\u003e\n            \u003cdiv class=\"rk-b-form-img\"\u003ePrecision Tube\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-form-text\"\u003e\n                \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n                \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 应用场景 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eTypical Industrial Applications\u003c\/h3\u003e\n        \u003cp\u003eWidely adopted across diverse industrial sectors, our aluminum alloy tubes support a broad range of professional use cases. The most common application areas include:\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-apps-grid\"\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eAutomation \u0026amp; Robotics\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                        \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                        \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                        \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                        \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eAutomotive \u0026amp; Transportation\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                        \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                        \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                        \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                        \u003cli\u003eCooling system piping\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eElectronics \u0026amp; Thermal\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                        \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                        \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                        \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                        \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eArchitectural \u0026amp; Construction\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                        \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                        \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                        \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                        \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003ePrecision Engineering\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                        \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                        \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                        \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                        \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eGeneral Manufacturing\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                        \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                        \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                        \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                        \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 服务优势 --\u003e\n    \u003cdiv class=\"rk-b-advantage-card\"\u003e\n        \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan class=\"rk-b-highlight\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-advantage-list\"\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 品牌底部 --\u003e\n    \u003cdiv class=\"rk-b-brand-footer\"\u003e\n        \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n        \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n    \u003c\/div\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 30mm (1.181\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797475590203,"sku":null,"price":11.2,"currency_code":"USD","in_stock":true},{"title":"OD 30mm (1.181\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797475622971,"sku":null,"price":16.05,"currency_code":"USD","in_stock":true},{"title":"OD 30mm (1.181\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797475655739,"sku":null,"price":19.78,"currency_code":"USD","in_stock":true},{"title":"OD 30mm (1.181\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797475688507,"sku":null,"price":25.44,"currency_code":"USD","in_stock":true},{"title":"OD 30mm (1.181\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797475721275,"sku":null,"price":30.45,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797472477243,"sku":null,"price":3.52,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797472510011,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797472542779,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797472575547,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797472608315,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797472641083,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797472673851,"sku":null,"price":4.26,"currency_code":"USD","in_stock":true},{"title":"OD 6mm (0.236\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797472706619,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797472739387,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 5mm (0.2\") \/ 500mm 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(19.7\")","offer_id":43797476704315,"sku":null,"price":46.54,"currency_code":"USD","in_stock":true},{"title":"OD 55mm (2.165\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797476737083,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797476769851,"sku":null,"price":25.58,"currency_code":"USD","in_stock":true},{"title":"OD 55mm (2.165\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797476802619,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797476835387,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797476868155,"sku":null,"price":49.64,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797476900923,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 60mm (2.362\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797476933691,"sku":null,"price":30.5,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797476966459,"sku":null,"price":37.22,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797476999227,"sku":null,"price":50.66,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797477031995,"sku":null,"price":58.94,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797477064763,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797477097531,"sku":null,"price":34.88,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797477130299,"sku":null,"price":50.4,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797477163067,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797477195835,"sku":null,"price":79.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/aluminumalloytube.webp?v=1784130025"},{"product_id":"industrial-hollow-round-aluminum-alloy-tubes-custom-cut-to-length-1","title":"Aluminum Alloy Tube OD 35mm (1.378\") custom","description":"\u003cstyle\u003e\n.rk-layout-b-wrap {\n    width: 100%;\n    max-width: 1200px;\n    margin: 0 auto;\n    padding: 0 20px 40px;\n    font-family: -apple-system, 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grid;\n    grid-template-columns: repeat(3, 1fr);\n    gap: 20px;\n    margin-top: 20px;\n}\n.rk-b-app-card {\n    border-radius: 10px;\n    overflow: hidden;\n    border: 1px solid #e0eef7;\n    transition: all 0.3s ease;\n}\n.rk-b-app-card:hover {\n    box-shadow: 0 6px 18px rgba(0, 89, 105, 0.1);\n    border-color: #00AAFF;\n}\n.rk-b-app-header {\n    background: #005969;\n    color: #d4af37;\n    padding: 14px 18px;\n    font-size: 16px;\n    font-weight: 600;\n}\n.rk-b-app-body {\n    padding: 18px;\n    background: #fdfefe;\n}\n.rk-b-app-body ul {\n    margin: 0;\n    padding-left: 18px;\n    font-size: 15px;\n    color: #555555;\n}\n.rk-b-app-body li {\n    margin-bottom: 5px;\n}\n\n\/* 优势金色边框卡片 *\/\n.rk-b-advantage-card {\n    border: 2px solid #d4af37;\n    border-radius: 12px;\n    padding: 35px;\n    background: linear-gradient(135deg, #fffdf7 0%, #ffffff 100%);\n}\n.rk-b-advantage-card h3 {\n    color: #b87333;\n    font-size: 22px;\n    margin: 0 0 15px 0;\n}\n.rk-b-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 12px 30px;\n    margin-top: 20px;\n}\n.rk-b-advantage-item {\n    font-size: 16px;\n    padding-left: 28px;\n    position: relative;\n    color: #444444;\n}\n.rk-b-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n    font-size: 18px;\n}\n\n\/* 品牌底部 *\/\n.rk-b-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 10px;\n}\n.rk-b-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n.rk-b-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n    text-align: center;\n}\n\n\/* 响应式 *\/\n@media screen and (max-width: 992px) {\n    .rk-b-features-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n    .rk-b-apps-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n    .rk-b-form-item,\n    .rk-b-form-item.reverse {\n        flex-direction: column;\n    }\n    .rk-b-form-img {\n        width: 100%;\n        height: 140px;\n    }\n}\n@media screen and (max-width: 768px) {\n    .rk-layout-b-wrap {\n        padding: 0 15px 30px;\n    }\n    .rk-b-hero {\n        padding: 35px 25px;\n    }\n    .rk-b-hero h1 {\n        font-size: 26px;\n    }\n    .rk-b-hero p {\n        font-size: 15px;\n        max-width: 100%;\n    }\n    .rk-b-section-card {\n        padding: 25px 20px;\n        margin-bottom: 25px;\n    }\n    .rk-b-section-title {\n        font-size: 20px;\n    }\n    .rk-b-section-card p {\n        font-size: 15px;\n    }\n    .rk-b-features-grid,\n    .rk-b-apps-grid,\n    .rk-b-advantage-list {\n        grid-template-columns: 1fr;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-layout-b-wrap\"\u003e\n    \u003c!-- 顶部横幅 --\u003e\n    \u003cdiv class=\"rk-b-hero\"\u003e\n        \u003cspan class=\"rk-brand-tag\"\u003eRapidKeen Industrial\u003c\/span\u003e\n        \u003ch1\u003ePremium Aluminum Alloy Tubes\u003c\/h1\u003e\n        \u003cp\u003eIndustrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. Ideal for precision fabrication, structural engineering and custom manufacturing projects.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 核心特性 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eCore Performance Characteristics\u003c\/h3\u003e\n        \u003cp\u003eOur hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish.\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-features-grid\"\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e⚙\u003c\/div\u003e\n                \u003ch4\u003eHigh Strength-to-Weight Ratio\u003c\/h4\u003e\n                \u003cp\u003eRemarkable structural strength while far lighter than steel. Reduces assembly weight, lowers shipping costs and improves energy efficiency for automotive and robotics use.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e🛡\u003c\/div\u003e\n                \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n                \u003cp\u003eNatural oxide layer protects against moisture, air and common industrial chemicals. Reliable performance for both indoor and outdoor long-term service.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e🔧\u003c\/div\u003e\n                \u003ch4\u003eSuperior Machinability\u003c\/h4\u003e\n                \u003cp\u003eWorks perfectly with CNC machining, drilling, milling, bending and flaring. Clean burr-free cuts and stable tolerances for complex fabrication processes.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e✨\u003c\/div\u003e\n                \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n                \u003cp\u003eCompatible with anodizing, powder coating, polishing and sandblasting. Hard uniform anodized layer boosts wear resistance and visual quality.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e📏\u003c\/div\u003e\n                \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n                \u003cp\u003ePrecision extrusion and cold-drawing ensure accurate OD, ID and wall thickness. Excellent concentricity for precision fitting and mechanical assemblies.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e⚡\u003c\/div\u003e\n                \u003ch4\u003eThermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n                \u003cp\u003eStrong thermal performance for heat sinks and cooling systems. Reliable electrical conductivity for grounding and electronic housing parts.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 产品形态 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eAvailable Product Forms\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan class=\"rk-b-gold\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-b-form-item\"\u003e\n            \u003cdiv class=\"rk-b-form-img\"\u003eSeamless Tube\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-form-text\"\u003e\n                \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n                \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-b-form-item reverse\"\u003e\n            \u003cdiv class=\"rk-b-form-img\"\u003ePrecision Tube\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-form-text\"\u003e\n                \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n                \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 应用场景 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eTypical Industrial Applications\u003c\/h3\u003e\n        \u003cp\u003eWidely adopted across diverse industrial sectors, our aluminum alloy tubes support a broad range of professional use cases. The most common application areas include:\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-apps-grid\"\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eAutomation \u0026amp; Robotics\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                        \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                        \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                        \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                        \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eAutomotive \u0026amp; Transportation\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                        \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                        \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                        \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                        \u003cli\u003eCooling system piping\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eElectronics \u0026amp; Thermal\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                        \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                        \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                        \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                        \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eArchitectural \u0026amp; Construction\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                        \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                        \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                        \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                        \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003ePrecision Engineering\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                        \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                        \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                        \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                        \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eGeneral Manufacturing\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                        \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                        \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                        \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                        \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 服务优势 --\u003e\n    \u003cdiv class=\"rk-b-advantage-card\"\u003e\n        \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan class=\"rk-b-highlight\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-advantage-list\"\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 品牌底部 --\u003e\n    \u003cdiv class=\"rk-b-brand-footer\"\u003e\n        \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n        \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n    \u003c\/div\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 35mm (1.378\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797487812667,"sku":null,"price":11.96,"currency_code":"USD","in_stock":true},{"title":"OD 35mm (1.378\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797487845435,"sku":null,"price":15.44,"currency_code":"USD","in_stock":true},{"title":"OD 35mm (1.378\") \/ WT 3mm (0.12\") \/ 500mm 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0;\n}\n.rk-b-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 12px 30px;\n    margin-top: 20px;\n}\n.rk-b-advantage-item {\n    font-size: 16px;\n    padding-left: 28px;\n    position: relative;\n    color: #444444;\n}\n.rk-b-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n    font-size: 18px;\n}\n\n\/* 品牌底部 *\/\n.rk-b-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 10px;\n}\n.rk-b-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n.rk-b-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n    text-align: center;\n}\n\n\/* 响应式 *\/\n@media screen and (max-width: 992px) {\n    .rk-b-features-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n    .rk-b-apps-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n    .rk-b-form-item,\n    .rk-b-form-item.reverse {\n        flex-direction: column;\n    }\n    .rk-b-form-img {\n        width: 100%;\n        height: 140px;\n    }\n}\n@media screen and (max-width: 768px) {\n    .rk-layout-b-wrap {\n        padding: 0 15px 30px;\n    }\n    .rk-b-hero {\n        padding: 35px 25px;\n    }\n    .rk-b-hero h1 {\n        font-size: 26px;\n    }\n    .rk-b-hero p {\n        font-size: 15px;\n        max-width: 100%;\n    }\n    .rk-b-section-card {\n        padding: 25px 20px;\n        margin-bottom: 25px;\n    }\n    .rk-b-section-title {\n        font-size: 20px;\n    }\n    .rk-b-section-card p {\n        font-size: 15px;\n    }\n    .rk-b-features-grid,\n    .rk-b-apps-grid,\n    .rk-b-advantage-list {\n        grid-template-columns: 1fr;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-layout-b-wrap\"\u003e\n    \u003c!-- 顶部横幅 --\u003e\n    \u003cdiv class=\"rk-b-hero\"\u003e\n        \u003cspan class=\"rk-brand-tag\"\u003eRapidKeen Industrial\u003c\/span\u003e\n        \u003ch1\u003ePremium Aluminum Alloy Tubes\u003c\/h1\u003e\n        \u003cp\u003eIndustrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. Ideal for precision fabrication, structural engineering and custom manufacturing projects.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 核心特性 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eCore Performance Characteristics\u003c\/h3\u003e\n        \u003cp\u003eOur hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish.\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-features-grid\"\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e⚙\u003c\/div\u003e\n                \u003ch4\u003eHigh Strength-to-Weight Ratio\u003c\/h4\u003e\n                \u003cp\u003eRemarkable structural strength while far lighter than steel. Reduces assembly weight, lowers shipping costs and improves energy efficiency for automotive and robotics use.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e🛡\u003c\/div\u003e\n                \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n                \u003cp\u003eNatural oxide layer protects against moisture, air and common industrial chemicals. Reliable performance for both indoor and outdoor long-term service.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e🔧\u003c\/div\u003e\n                \u003ch4\u003eSuperior Machinability\u003c\/h4\u003e\n                \u003cp\u003eWorks perfectly with CNC machining, drilling, milling, bending and flaring. Clean burr-free cuts and stable tolerances for complex fabrication processes.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e✨\u003c\/div\u003e\n                \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n                \u003cp\u003eCompatible with anodizing, powder coating, polishing and sandblasting. Hard uniform anodized layer boosts wear resistance and visual quality.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e📏\u003c\/div\u003e\n                \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n                \u003cp\u003ePrecision extrusion and cold-drawing ensure accurate OD, ID and wall thickness. Excellent concentricity for precision fitting and mechanical assemblies.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e⚡\u003c\/div\u003e\n                \u003ch4\u003eThermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n                \u003cp\u003eStrong thermal performance for heat sinks and cooling systems. Reliable electrical conductivity for grounding and electronic housing parts.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 产品形态 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eAvailable Product Forms\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan class=\"rk-b-gold\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-b-form-item\"\u003e\n            \u003cdiv class=\"rk-b-form-img\"\u003eSeamless Tube\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-form-text\"\u003e\n                \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n                \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-b-form-item reverse\"\u003e\n            \u003cdiv class=\"rk-b-form-img\"\u003ePrecision Tube\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-form-text\"\u003e\n                \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n                \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 应用场景 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eTypical Industrial Applications\u003c\/h3\u003e\n        \u003cp\u003eWidely adopted across diverse industrial sectors, our aluminum alloy tubes support a broad range of professional use cases. The most common application areas include:\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-apps-grid\"\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eAutomation \u0026amp; Robotics\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                        \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                        \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                        \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                        \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eAutomotive \u0026amp; Transportation\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                        \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                        \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                        \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                        \u003cli\u003eCooling system piping\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eElectronics \u0026amp; Thermal\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                        \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                        \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                        \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                        \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eArchitectural \u0026amp; Construction\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                        \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                        \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                        \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                        \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003ePrecision Engineering\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                        \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                        \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                        \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                        \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eGeneral Manufacturing\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                        \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                        \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                        \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                        \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 服务优势 --\u003e\n    \u003cdiv class=\"rk-b-advantage-card\"\u003e\n        \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan class=\"rk-b-highlight\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-advantage-list\"\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 品牌底部 --\u003e\n    \u003cdiv class=\"rk-b-brand-footer\"\u003e\n        \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n        \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n    \u003c\/div\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 40mm (1.575\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797497413691,"sku":null,"price":14.2,"currency_code":"USD","in_stock":true},{"title":"OD 40mm (1.575\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797497446459,"sku":null,"price":17.92,"currency_code":"USD","in_stock":true},{"title":"OD 40mm (1.575\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797497479227,"sku":null,"price":25.4,"currency_code":"USD","in_stock":true},{"title":"OD 40mm (1.575\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797497511995,"sku":null,"price":30.94,"currency_code":"USD","in_stock":true},{"title":"OD 40mm (1.575\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797497544763,"sku":null,"price":37.76,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797493973051,"sku":null,"price":3.52,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797494005819,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797494038587,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797494071355,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797494104123,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797494136891,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797494169659,"sku":null,"price":4.26,"currency_code":"USD","in_stock":true},{"title":"OD 6mm (0.236\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797494202427,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797494235195,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797494267963,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797494300731,"sku":null,"price":4.27,"currency_code":"USD","in_stock":true},{"title":"OD 7mm (0.276\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797494333499,"sku":null,"price":4.88,"currency_code":"USD","in_stock":true},{"title":"OD 7mm (0.276\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797494366267,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797494399035,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797494431803,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 8mm (0.315\") \/ WT 1mm (0.04\") \/ 500mm 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(19.7\")","offer_id":43797498200123,"sku":null,"price":46.54,"currency_code":"USD","in_stock":true},{"title":"OD 55mm (2.165\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797498232891,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797498265659,"sku":null,"price":25.58,"currency_code":"USD","in_stock":true},{"title":"OD 55mm (2.165\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797498298427,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797498331195,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797498363963,"sku":null,"price":49.64,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797498396731,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 60mm (2.362\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797498429499,"sku":null,"price":30.5,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797498462267,"sku":null,"price":37.22,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797498495035,"sku":null,"price":50.66,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797498527803,"sku":null,"price":58.94,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797498560571,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797498593339,"sku":null,"price":34.88,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797498626107,"sku":null,"price":50.4,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797498658875,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797498691643,"sku":null,"price":79.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/aluminumalloytube.webp?v=1784130025"},{"product_id":"industrial-hollow-round-aluminum-alloy-tubes-custom-cut-to-length-3","title":"Aluminum Alloy Tube OD 42mm (1.653\") custom","description":"\u003cstyle\u003e\n.rk-layout-b-wrap {\n    width: 100%;\n    max-width: 1200px;\n    margin: 0 auto;\n    padding: 0 20px 40px;\n    font-family: -apple-system, 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0;\n    color: #666666;\n    line-height: 1.6;\n    text-align: left;\n}\n\n\/* 产品形态 左右交错 *\/\n.rk-b-form-item {\n    display: flex;\n    gap: 30px;\n    align-items: center;\n    margin-bottom: 30px;\n}\n.rk-b-form-item:last-child {\n    margin-bottom: 0;\n}\n.rk-b-form-item.reverse {\n    flex-direction: row-reverse;\n}\n.rk-b-form-img {\n    width: 40%;\n    flex-shrink: 0;\n    height: 180px;\n    border-radius: 10px;\n    background: linear-gradient(135deg, #9EC9F2 0%, #00AAFF 100%);\n    display: flex;\n    align-items: center;\n    justify-content: center;\n    color: #ffffff;\n    font-size: 18px;\n    font-weight: 600;\n}\n.rk-b-form-text {\n    flex: 1;\n}\n.rk-b-form-text h4 {\n    color: #005969;\n    font-size: 20px;\n    margin: 0 0 10px 0;\n    padding-bottom: 8px;\n    border-bottom: 2px solid #d4af37;\n    display: inline-block;\n}\n.rk-b-form-text p {\n    font-size: 16px;\n    margin: 0;\n    color: #555555;\n}\n\n\/* 应用场景3列卡片 *\/\n.rk-b-apps-grid {\n    display: grid;\n    grid-template-columns: repeat(3, 1fr);\n    gap: 20px;\n    margin-top: 20px;\n}\n.rk-b-app-card {\n    border-radius: 10px;\n    overflow: hidden;\n    border: 1px solid #e0eef7;\n    transition: all 0.3s ease;\n}\n.rk-b-app-card:hover {\n    box-shadow: 0 6px 18px rgba(0, 89, 105, 0.1);\n    border-color: #00AAFF;\n}\n.rk-b-app-header {\n    background: #005969;\n    color: #d4af37;\n    padding: 14px 18px;\n    font-size: 16px;\n    font-weight: 600;\n}\n.rk-b-app-body {\n    padding: 18px;\n    background: #fdfefe;\n}\n.rk-b-app-body ul {\n    margin: 0;\n    padding-left: 18px;\n    font-size: 15px;\n    color: #555555;\n}\n.rk-b-app-body li {\n    margin-bottom: 5px;\n}\n\n\/* 优势金色边框卡片 *\/\n.rk-b-advantage-card {\n    border: 2px solid #d4af37;\n    border-radius: 12px;\n    padding: 35px;\n    background: linear-gradient(135deg, #fffdf7 0%, #ffffff 100%);\n}\n.rk-b-advantage-card h3 {\n    color: #b87333;\n    font-size: 22px;\n    margin: 0 0 15px 0;\n}\n.rk-b-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 12px 30px;\n    margin-top: 20px;\n}\n.rk-b-advantage-item {\n    font-size: 16px;\n    padding-left: 28px;\n    position: relative;\n    color: #444444;\n}\n.rk-b-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n    font-size: 18px;\n}\n\n\/* 品牌底部 *\/\n.rk-b-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 10px;\n}\n.rk-b-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n.rk-b-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n    text-align: center;\n}\n\n\/* 响应式 *\/\n@media screen and (max-width: 992px) {\n    .rk-b-features-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n    .rk-b-apps-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n    .rk-b-form-item,\n    .rk-b-form-item.reverse {\n        flex-direction: column;\n    }\n    .rk-b-form-img {\n        width: 100%;\n        height: 140px;\n    }\n}\n@media screen and (max-width: 768px) {\n    .rk-layout-b-wrap {\n        padding: 0 15px 30px;\n    }\n    .rk-b-hero {\n        padding: 35px 25px;\n    }\n    .rk-b-hero h1 {\n        font-size: 26px;\n    }\n    .rk-b-hero p {\n        font-size: 15px;\n        max-width: 100%;\n    }\n    .rk-b-section-card {\n        padding: 25px 20px;\n        margin-bottom: 25px;\n    }\n    .rk-b-section-title {\n        font-size: 20px;\n    }\n    .rk-b-section-card p {\n        font-size: 15px;\n    }\n    .rk-b-features-grid,\n    .rk-b-apps-grid,\n    .rk-b-advantage-list {\n        grid-template-columns: 1fr;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-layout-b-wrap\"\u003e\n    \u003c!-- 顶部横幅 --\u003e\n    \u003cdiv class=\"rk-b-hero\"\u003e\n        \u003cspan class=\"rk-brand-tag\"\u003eRapidKeen Industrial\u003c\/span\u003e\n        \u003ch1\u003ePremium Aluminum Alloy Tubes\u003c\/h1\u003e\n        \u003cp\u003eIndustrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. Ideal for precision fabrication, structural engineering and custom manufacturing projects.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 核心特性 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eCore Performance Characteristics\u003c\/h3\u003e\n        \u003cp\u003eOur hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish.\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-features-grid\"\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e⚙\u003c\/div\u003e\n                \u003ch4\u003eHigh Strength-to-Weight Ratio\u003c\/h4\u003e\n                \u003cp\u003eRemarkable structural strength while far lighter than steel. Reduces assembly weight, lowers shipping costs and improves energy efficiency for automotive and robotics use.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e🛡\u003c\/div\u003e\n                \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n                \u003cp\u003eNatural oxide layer protects against moisture, air and common industrial chemicals. Reliable performance for both indoor and outdoor long-term service.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e🔧\u003c\/div\u003e\n                \u003ch4\u003eSuperior Machinability\u003c\/h4\u003e\n                \u003cp\u003eWorks perfectly with CNC machining, drilling, milling, bending and flaring. Clean burr-free cuts and stable tolerances for complex fabrication processes.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e✨\u003c\/div\u003e\n                \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n                \u003cp\u003eCompatible with anodizing, powder coating, polishing and sandblasting. Hard uniform anodized layer boosts wear resistance and visual quality.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e📏\u003c\/div\u003e\n                \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n                \u003cp\u003ePrecision extrusion and cold-drawing ensure accurate OD, ID and wall thickness. Excellent concentricity for precision fitting and mechanical assemblies.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e⚡\u003c\/div\u003e\n                \u003ch4\u003eThermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n                \u003cp\u003eStrong thermal performance for heat sinks and cooling systems. Reliable electrical conductivity for grounding and electronic housing parts.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 产品形态 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eAvailable Product Forms\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan class=\"rk-b-gold\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-b-form-item\"\u003e\n            \u003cdiv class=\"rk-b-form-img\"\u003eSeamless Tube\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-form-text\"\u003e\n                \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n                \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-b-form-item reverse\"\u003e\n            \u003cdiv class=\"rk-b-form-img\"\u003ePrecision Tube\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-form-text\"\u003e\n                \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n                \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 应用场景 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eTypical Industrial Applications\u003c\/h3\u003e\n        \u003cp\u003eWidely adopted across diverse industrial sectors, our aluminum alloy tubes support a broad range of professional use cases. The most common application areas include:\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-apps-grid\"\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eAutomation \u0026amp; Robotics\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                        \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                        \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                        \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                        \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eAutomotive \u0026amp; Transportation\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                        \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                        \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                        \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                        \u003cli\u003eCooling system piping\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eElectronics \u0026amp; Thermal\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                        \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                        \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                        \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                        \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eArchitectural \u0026amp; Construction\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                        \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                        \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                        \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                        \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003ePrecision Engineering\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                        \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                        \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                        \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                        \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eGeneral Manufacturing\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                        \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                        \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                        \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                        \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 服务优势 --\u003e\n    \u003cdiv class=\"rk-b-advantage-card\"\u003e\n        \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan class=\"rk-b-highlight\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-advantage-list\"\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 品牌底部 --\u003e\n    \u003cdiv class=\"rk-b-brand-footer\"\u003e\n        \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n        \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n    \u003c\/div\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 42mm (1.653\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797512192059,"sku":null,"price":14.2,"currency_code":"USD","in_stock":true},{"title":"OD 42mm (1.653\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797512224827,"sku":null,"price":19.18,"currency_code":"USD","in_stock":true},{"title":"OD 42mm (1.653\") \/ WT 3mm (0.12\") \/ 500mm 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0;\n}\n.rk-b-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 12px 30px;\n    margin-top: 20px;\n}\n.rk-b-advantage-item {\n    font-size: 16px;\n    padding-left: 28px;\n    position: relative;\n    color: #444444;\n}\n.rk-b-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n    font-size: 18px;\n}\n\n\/* 品牌底部 *\/\n.rk-b-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 10px;\n}\n.rk-b-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n.rk-b-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n    text-align: center;\n}\n\n\/* 响应式 *\/\n@media screen and (max-width: 992px) {\n    .rk-b-features-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n    .rk-b-apps-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n    .rk-b-form-item,\n    .rk-b-form-item.reverse {\n        flex-direction: column;\n    }\n    .rk-b-form-img {\n        width: 100%;\n        height: 140px;\n    }\n}\n@media screen and (max-width: 768px) {\n    .rk-layout-b-wrap {\n        padding: 0 15px 30px;\n    }\n    .rk-b-hero {\n        padding: 35px 25px;\n    }\n    .rk-b-hero h1 {\n        font-size: 26px;\n    }\n    .rk-b-hero p {\n        font-size: 15px;\n        max-width: 100%;\n    }\n    .rk-b-section-card {\n        padding: 25px 20px;\n        margin-bottom: 25px;\n    }\n    .rk-b-section-title {\n        font-size: 20px;\n    }\n    .rk-b-section-card p {\n        font-size: 15px;\n    }\n    .rk-b-features-grid,\n    .rk-b-apps-grid,\n    .rk-b-advantage-list {\n        grid-template-columns: 1fr;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-layout-b-wrap\"\u003e\n    \u003c!-- 顶部横幅 --\u003e\n    \u003cdiv class=\"rk-b-hero\"\u003e\n        \u003cspan class=\"rk-brand-tag\"\u003eRapidKeen Industrial\u003c\/span\u003e\n        \u003ch1\u003ePremium Aluminum Alloy Tubes\u003c\/h1\u003e\n        \u003cp\u003eIndustrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. Ideal for precision fabrication, structural engineering and custom manufacturing projects.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 核心特性 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eCore Performance Characteristics\u003c\/h3\u003e\n        \u003cp\u003eOur hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish.\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-features-grid\"\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e⚙\u003c\/div\u003e\n                \u003ch4\u003eHigh Strength-to-Weight Ratio\u003c\/h4\u003e\n                \u003cp\u003eRemarkable structural strength while far lighter than steel. Reduces assembly weight, lowers shipping costs and improves energy efficiency for automotive and robotics use.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e🛡\u003c\/div\u003e\n                \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n                \u003cp\u003eNatural oxide layer protects against moisture, air and common industrial chemicals. Reliable performance for both indoor and outdoor long-term service.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e🔧\u003c\/div\u003e\n                \u003ch4\u003eSuperior Machinability\u003c\/h4\u003e\n                \u003cp\u003eWorks perfectly with CNC machining, drilling, milling, bending and flaring. Clean burr-free cuts and stable tolerances for complex fabrication processes.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e✨\u003c\/div\u003e\n                \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n                \u003cp\u003eCompatible with anodizing, powder coating, polishing and sandblasting. Hard uniform anodized layer boosts wear resistance and visual quality.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e📏\u003c\/div\u003e\n                \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n                \u003cp\u003ePrecision extrusion and cold-drawing ensure accurate OD, ID and wall thickness. Excellent concentricity for precision fitting and mechanical assemblies.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e⚡\u003c\/div\u003e\n                \u003ch4\u003eThermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n                \u003cp\u003eStrong thermal performance for heat sinks and cooling systems. Reliable electrical conductivity for grounding and electronic housing parts.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 产品形态 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eAvailable Product Forms\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan class=\"rk-b-gold\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-b-form-item\"\u003e\n            \u003cdiv class=\"rk-b-form-img\"\u003eSeamless Tube\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-form-text\"\u003e\n                \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n                \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-b-form-item reverse\"\u003e\n            \u003cdiv class=\"rk-b-form-img\"\u003ePrecision Tube\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-form-text\"\u003e\n                \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n                \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 应用场景 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eTypical Industrial Applications\u003c\/h3\u003e\n        \u003cp\u003eWidely adopted across diverse industrial sectors, our aluminum alloy tubes support a broad range of professional use cases. The most common application areas include:\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-apps-grid\"\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eAutomation \u0026amp; Robotics\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                        \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                        \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                        \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                        \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eAutomotive \u0026amp; Transportation\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                        \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                        \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                        \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                        \u003cli\u003eCooling system piping\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eElectronics \u0026amp; Thermal\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                        \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                        \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                        \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                        \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eArchitectural \u0026amp; Construction\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                        \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                        \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                        \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                        \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003ePrecision Engineering\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                        \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                        \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                        \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                        \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eGeneral Manufacturing\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                        \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                        \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                        \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                        \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 服务优势 --\u003e\n    \u003cdiv class=\"rk-b-advantage-card\"\u003e\n        \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan class=\"rk-b-highlight\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-advantage-list\"\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 品牌底部 --\u003e\n    \u003cdiv class=\"rk-b-brand-footer\"\u003e\n        \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n        \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n    \u003c\/div\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 45mm (1.772\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797521563707,"sku":null,"price":19.8,"currency_code":"USD","in_stock":true},{"title":"OD 45mm (1.772\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797521530939,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 45mm (1.772\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797521596475,"sku":null,"price":27.98,"currency_code":"USD","in_stock":true},{"title":"OD 45mm (1.772\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797521629243,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 45mm (1.772\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797521662011,"sku":null,"price":40.32,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797517795387,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797517762619,"sku":null,"price":3.52,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797517828155,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797517860923,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797517893691,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797517959227,"sku":null,"price":4.26,"currency_code":"USD","in_stock":true},{"title":"OD 6mm (0.236\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797517926459,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797517991995,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797518024763,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797518057531,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797518123067,"sku":null,"price":4.88,"currency_code":"USD","in_stock":true},{"title":"OD 7mm (0.276\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797518090299,"sku":null,"price":4.27,"currency_code":"USD","in_stock":true},{"title":"OD 7mm (0.276\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797518155835,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797518188603,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797518221371,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 8mm (0.315\") \/ WT 2mm (0.08\") \/ 500mm 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(19.7\")","offer_id":43797521989691,"sku":null,"price":46.54,"currency_code":"USD","in_stock":true},{"title":"OD 55mm (2.165\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797522055227,"sku":null,"price":25.58,"currency_code":"USD","in_stock":true},{"title":"OD 55mm (2.165\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797522022459,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797522087995,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797522120763,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797522153531,"sku":null,"price":49.64,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797522219067,"sku":null,"price":30.5,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797522186299,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 60mm (2.362\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797522251835,"sku":null,"price":37.22,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797522284603,"sku":null,"price":50.66,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797522317371,"sku":null,"price":58.94,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797522382907,"sku":null,"price":34.88,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797522350139,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797522415675,"sku":null,"price":50.4,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797522448443,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797522481211,"sku":null,"price":79.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/aluminumalloytube.webp?v=1784130025"},{"product_id":"industrial-hollow-round-aluminum-alloy-tubes-custom-cut-to-length-5","title":"Aluminum Alloy Tube OD 48mm (1.89\") custom","description":"\u003cstyle\u003e\n.rk-layout-b-wrap {\n    width: 100%;\n    max-width: 1200px;\n    margin: 0 auto;\n    padding: 0 20px 40px;\n    font-family: -apple-system, 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grid;\n    grid-template-columns: repeat(3, 1fr);\n    gap: 20px;\n    margin-top: 20px;\n}\n.rk-b-app-card {\n    border-radius: 10px;\n    overflow: hidden;\n    border: 1px solid #e0eef7;\n    transition: all 0.3s ease;\n}\n.rk-b-app-card:hover {\n    box-shadow: 0 6px 18px rgba(0, 89, 105, 0.1);\n    border-color: #00AAFF;\n}\n.rk-b-app-header {\n    background: #005969;\n    color: #d4af37;\n    padding: 14px 18px;\n    font-size: 16px;\n    font-weight: 600;\n}\n.rk-b-app-body {\n    padding: 18px;\n    background: #fdfefe;\n}\n.rk-b-app-body ul {\n    margin: 0;\n    padding-left: 18px;\n    font-size: 15px;\n    color: #555555;\n}\n.rk-b-app-body li {\n    margin-bottom: 5px;\n}\n\n\/* 优势金色边框卡片 *\/\n.rk-b-advantage-card {\n    border: 2px solid #d4af37;\n    border-radius: 12px;\n    padding: 35px;\n    background: linear-gradient(135deg, #fffdf7 0%, #ffffff 100%);\n}\n.rk-b-advantage-card h3 {\n    color: #b87333;\n    font-size: 22px;\n    margin: 0 0 15px 0;\n}\n.rk-b-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 12px 30px;\n    margin-top: 20px;\n}\n.rk-b-advantage-item {\n    font-size: 16px;\n    padding-left: 28px;\n    position: relative;\n    color: #444444;\n}\n.rk-b-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n    font-size: 18px;\n}\n\n\/* 品牌底部 *\/\n.rk-b-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 10px;\n}\n.rk-b-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n.rk-b-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n    text-align: center;\n}\n\n\/* 响应式 *\/\n@media screen and (max-width: 992px) {\n    .rk-b-features-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n    .rk-b-apps-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n    .rk-b-form-item,\n    .rk-b-form-item.reverse {\n        flex-direction: column;\n    }\n    .rk-b-form-img {\n        width: 100%;\n        height: 140px;\n    }\n}\n@media screen and (max-width: 768px) {\n    .rk-layout-b-wrap {\n        padding: 0 15px 30px;\n    }\n    .rk-b-hero {\n        padding: 35px 25px;\n    }\n    .rk-b-hero h1 {\n        font-size: 26px;\n    }\n    .rk-b-hero p {\n        font-size: 15px;\n        max-width: 100%;\n    }\n    .rk-b-section-card {\n        padding: 25px 20px;\n        margin-bottom: 25px;\n    }\n    .rk-b-section-title {\n        font-size: 20px;\n    }\n    .rk-b-section-card p {\n        font-size: 15px;\n    }\n    .rk-b-features-grid,\n    .rk-b-apps-grid,\n    .rk-b-advantage-list {\n        grid-template-columns: 1fr;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-layout-b-wrap\"\u003e\n    \u003c!-- 顶部横幅 --\u003e\n    \u003cdiv class=\"rk-b-hero\"\u003e\n        \u003cspan class=\"rk-brand-tag\"\u003eRapidKeen Industrial\u003c\/span\u003e\n        \u003ch1\u003ePremium Aluminum Alloy Tubes\u003c\/h1\u003e\n        \u003cp\u003eIndustrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. Ideal for precision fabrication, structural engineering and custom manufacturing projects.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 核心特性 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eCore Performance Characteristics\u003c\/h3\u003e\n        \u003cp\u003eOur hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish.\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-features-grid\"\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e⚙\u003c\/div\u003e\n                \u003ch4\u003eHigh Strength-to-Weight Ratio\u003c\/h4\u003e\n                \u003cp\u003eRemarkable structural strength while far lighter than steel. Reduces assembly weight, lowers shipping costs and improves energy efficiency for automotive and robotics use.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e🛡\u003c\/div\u003e\n                \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n                \u003cp\u003eNatural oxide layer protects against moisture, air and common industrial chemicals. Reliable performance for both indoor and outdoor long-term service.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e🔧\u003c\/div\u003e\n                \u003ch4\u003eSuperior Machinability\u003c\/h4\u003e\n                \u003cp\u003eWorks perfectly with CNC machining, drilling, milling, bending and flaring. Clean burr-free cuts and stable tolerances for complex fabrication processes.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e✨\u003c\/div\u003e\n                \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n                \u003cp\u003eCompatible with anodizing, powder coating, polishing and sandblasting. Hard uniform anodized layer boosts wear resistance and visual quality.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e📏\u003c\/div\u003e\n                \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n                \u003cp\u003ePrecision extrusion and cold-drawing ensure accurate OD, ID and wall thickness. Excellent concentricity for precision fitting and mechanical assemblies.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e⚡\u003c\/div\u003e\n                \u003ch4\u003eThermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n                \u003cp\u003eStrong thermal performance for heat sinks and cooling systems. Reliable electrical conductivity for grounding and electronic housing parts.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 产品形态 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eAvailable Product Forms\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan class=\"rk-b-gold\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-b-form-item\"\u003e\n            \u003cdiv class=\"rk-b-form-img\"\u003eSeamless Tube\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-form-text\"\u003e\n                \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n                \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-b-form-item reverse\"\u003e\n            \u003cdiv class=\"rk-b-form-img\"\u003ePrecision Tube\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-form-text\"\u003e\n                \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n                \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 应用场景 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eTypical Industrial Applications\u003c\/h3\u003e\n        \u003cp\u003eWidely adopted across diverse industrial sectors, our aluminum alloy tubes support a broad range of professional use cases. The most common application areas include:\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-apps-grid\"\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eAutomation \u0026amp; Robotics\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                        \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                        \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                        \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                        \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eAutomotive \u0026amp; Transportation\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                        \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                        \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                        \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                        \u003cli\u003eCooling system piping\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eElectronics \u0026amp; Thermal\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                        \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                        \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                        \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                        \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eArchitectural \u0026amp; Construction\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                        \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                        \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                        \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                        \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003ePrecision Engineering\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                        \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                        \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                        \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                        \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eGeneral Manufacturing\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                        \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                        \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                        \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                        \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 服务优势 --\u003e\n    \u003cdiv class=\"rk-b-advantage-card\"\u003e\n        \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan class=\"rk-b-highlight\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-advantage-list\"\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 品牌底部 --\u003e\n    \u003cdiv class=\"rk-b-brand-footer\"\u003e\n        \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n        \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n    \u003c\/div\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 48mm (1.89\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797528543291,"sku":null,"price":20.42,"currency_code":"USD","in_stock":true},{"title":"OD 48mm (1.89\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797528510523,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 48mm (1.89\") \/ WT 3mm (0.12\") \/ 500mm 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0;\n}\n.rk-b-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 12px 30px;\n    margin-top: 20px;\n}\n.rk-b-advantage-item {\n    font-size: 16px;\n    padding-left: 28px;\n    position: relative;\n    color: #444444;\n}\n.rk-b-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n    font-size: 18px;\n}\n\n\/* 品牌底部 *\/\n.rk-b-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 10px;\n}\n.rk-b-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n.rk-b-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n    text-align: center;\n}\n\n\/* 响应式 *\/\n@media screen and (max-width: 992px) {\n    .rk-b-features-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n    .rk-b-apps-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n    .rk-b-form-item,\n    .rk-b-form-item.reverse {\n        flex-direction: column;\n    }\n    .rk-b-form-img {\n        width: 100%;\n        height: 140px;\n    }\n}\n@media screen and (max-width: 768px) {\n    .rk-layout-b-wrap {\n        padding: 0 15px 30px;\n    }\n    .rk-b-hero {\n        padding: 35px 25px;\n    }\n    .rk-b-hero h1 {\n        font-size: 26px;\n    }\n    .rk-b-hero p {\n        font-size: 15px;\n        max-width: 100%;\n    }\n    .rk-b-section-card {\n        padding: 25px 20px;\n        margin-bottom: 25px;\n    }\n    .rk-b-section-title {\n        font-size: 20px;\n    }\n    .rk-b-section-card p {\n        font-size: 15px;\n    }\n    .rk-b-features-grid,\n    .rk-b-apps-grid,\n    .rk-b-advantage-list {\n        grid-template-columns: 1fr;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-layout-b-wrap\"\u003e\n    \u003c!-- 顶部横幅 --\u003e\n    \u003cdiv class=\"rk-b-hero\"\u003e\n        \u003cspan class=\"rk-brand-tag\"\u003eRapidKeen Industrial\u003c\/span\u003e\n        \u003ch1\u003ePremium Aluminum Alloy Tubes\u003c\/h1\u003e\n        \u003cp\u003eIndustrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. Ideal for precision fabrication, structural engineering and custom manufacturing projects.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 核心特性 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eCore Performance Characteristics\u003c\/h3\u003e\n        \u003cp\u003eOur hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish.\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-features-grid\"\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e⚙\u003c\/div\u003e\n                \u003ch4\u003eHigh Strength-to-Weight Ratio\u003c\/h4\u003e\n                \u003cp\u003eRemarkable structural strength while far lighter than steel. Reduces assembly weight, lowers shipping costs and improves energy efficiency for automotive and robotics use.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e🛡\u003c\/div\u003e\n                \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n                \u003cp\u003eNatural oxide layer protects against moisture, air and common industrial chemicals. Reliable performance for both indoor and outdoor long-term service.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e🔧\u003c\/div\u003e\n                \u003ch4\u003eSuperior Machinability\u003c\/h4\u003e\n                \u003cp\u003eWorks perfectly with CNC machining, drilling, milling, bending and flaring. Clean burr-free cuts and stable tolerances for complex fabrication processes.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e✨\u003c\/div\u003e\n                \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n                \u003cp\u003eCompatible with anodizing, powder coating, polishing and sandblasting. Hard uniform anodized layer boosts wear resistance and visual quality.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e📏\u003c\/div\u003e\n                \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n                \u003cp\u003ePrecision extrusion and cold-drawing ensure accurate OD, ID and wall thickness. Excellent concentricity for precision fitting and mechanical assemblies.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e⚡\u003c\/div\u003e\n                \u003ch4\u003eThermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n                \u003cp\u003eStrong thermal performance for heat sinks and cooling systems. Reliable electrical conductivity for grounding and electronic housing parts.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 产品形态 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eAvailable Product Forms\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan class=\"rk-b-gold\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-b-form-item\"\u003e\n            \u003cdiv class=\"rk-b-form-img\"\u003eSeamless Tube\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-form-text\"\u003e\n                \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n                \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-b-form-item reverse\"\u003e\n            \u003cdiv class=\"rk-b-form-img\"\u003ePrecision Tube\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-form-text\"\u003e\n                \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n                \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 应用场景 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eTypical Industrial Applications\u003c\/h3\u003e\n        \u003cp\u003eWidely adopted across diverse industrial sectors, our aluminum alloy tubes support a broad range of professional use cases. The most common application areas include:\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-apps-grid\"\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eAutomation \u0026amp; Robotics\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                        \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                        \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                        \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                        \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eAutomotive \u0026amp; Transportation\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                        \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                        \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                        \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                        \u003cli\u003eCooling system piping\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eElectronics \u0026amp; Thermal\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                        \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                        \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                        \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                        \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eArchitectural \u0026amp; Construction\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                        \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                        \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                        \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                        \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003ePrecision Engineering\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                        \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                        \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                        \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                        \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eGeneral Manufacturing\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                        \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                        \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                        \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                        \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 服务优势 --\u003e\n    \u003cdiv class=\"rk-b-advantage-card\"\u003e\n        \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan class=\"rk-b-highlight\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-advantage-list\"\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 品牌底部 --\u003e\n    \u003cdiv class=\"rk-b-brand-footer\"\u003e\n        \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n        \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n    \u003c\/div\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 50mm (1.969\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797535457339,"sku":null,"price":16.8,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797535490107,"sku":null,"price":23.52,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797535522875,"sku":null,"price":34.12,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797535555643,"sku":null,"price":40.32,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797535588411,"sku":null,"price":46.54,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797531361339,"sku":null,"price":3.52,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797531394107,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797531426875,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797531459643,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797531492411,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797531525179,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797531557947,"sku":null,"price":4.26,"currency_code":"USD","in_stock":true},{"title":"OD 6mm (0.236\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797531590715,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797531623483,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797531656251,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797531689019,"sku":null,"price":4.27,"currency_code":"USD","in_stock":true},{"title":"OD 7mm (0.276\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797531721787,"sku":null,"price":4.88,"currency_code":"USD","in_stock":true},{"title":"OD 7mm (0.276\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797531754555,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797531787323,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797531820091,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 8mm (0.315\") \/ WT 1mm (0.04\") \/ 500mm 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(19.7\")","offer_id":43797531328571,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797535621179,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797535653947,"sku":null,"price":25.58,"currency_code":"USD","in_stock":true},{"title":"OD 55mm (2.165\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797535686715,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797535719483,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797535752251,"sku":null,"price":49.64,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797535785019,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 60mm (2.362\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797535817787,"sku":null,"price":30.5,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797535850555,"sku":null,"price":37.22,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797535883323,"sku":null,"price":50.66,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797535916091,"sku":null,"price":58.94,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797535948859,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797535981627,"sku":null,"price":34.88,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797536014395,"sku":null,"price":50.4,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797536047163,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797536079931,"sku":null,"price":79.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/aluminumalloytube.webp?v=1784130025"},{"product_id":"industrial-hollow-round-aluminum-alloy-tubes-custom-cut-to-length-7","title":"Aluminum Alloy Tube OD 55mm (2.165\") custom","description":"\u003cstyle\u003e\n.rk-layout-b-wrap {\n    width: 100%;\n    max-width: 1200px;\n    margin: 0 auto;\n    padding: 0 20px 40px;\n    font-family: -apple-system, 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grid;\n    grid-template-columns: repeat(3, 1fr);\n    gap: 20px;\n    margin-top: 20px;\n}\n.rk-b-app-card {\n    border-radius: 10px;\n    overflow: hidden;\n    border: 1px solid #e0eef7;\n    transition: all 0.3s ease;\n}\n.rk-b-app-card:hover {\n    box-shadow: 0 6px 18px rgba(0, 89, 105, 0.1);\n    border-color: #00AAFF;\n}\n.rk-b-app-header {\n    background: #005969;\n    color: #d4af37;\n    padding: 14px 18px;\n    font-size: 16px;\n    font-weight: 600;\n}\n.rk-b-app-body {\n    padding: 18px;\n    background: #fdfefe;\n}\n.rk-b-app-body ul {\n    margin: 0;\n    padding-left: 18px;\n    font-size: 15px;\n    color: #555555;\n}\n.rk-b-app-body li {\n    margin-bottom: 5px;\n}\n\n\/* 优势金色边框卡片 *\/\n.rk-b-advantage-card {\n    border: 2px solid #d4af37;\n    border-radius: 12px;\n    padding: 35px;\n    background: linear-gradient(135deg, #fffdf7 0%, #ffffff 100%);\n}\n.rk-b-advantage-card h3 {\n    color: #b87333;\n    font-size: 22px;\n    margin: 0 0 15px 0;\n}\n.rk-b-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 12px 30px;\n    margin-top: 20px;\n}\n.rk-b-advantage-item {\n    font-size: 16px;\n    padding-left: 28px;\n    position: relative;\n    color: #444444;\n}\n.rk-b-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n    font-size: 18px;\n}\n\n\/* 品牌底部 *\/\n.rk-b-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 10px;\n}\n.rk-b-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n.rk-b-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n    text-align: center;\n}\n\n\/* 响应式 *\/\n@media screen and (max-width: 992px) {\n    .rk-b-features-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n    .rk-b-apps-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n    .rk-b-form-item,\n    .rk-b-form-item.reverse {\n        flex-direction: column;\n    }\n    .rk-b-form-img {\n        width: 100%;\n        height: 140px;\n    }\n}\n@media screen and (max-width: 768px) {\n    .rk-layout-b-wrap {\n        padding: 0 15px 30px;\n    }\n    .rk-b-hero {\n        padding: 35px 25px;\n    }\n    .rk-b-hero h1 {\n        font-size: 26px;\n    }\n    .rk-b-hero p {\n        font-size: 15px;\n        max-width: 100%;\n    }\n    .rk-b-section-card {\n        padding: 25px 20px;\n        margin-bottom: 25px;\n    }\n    .rk-b-section-title {\n        font-size: 20px;\n    }\n    .rk-b-section-card p {\n        font-size: 15px;\n    }\n    .rk-b-features-grid,\n    .rk-b-apps-grid,\n    .rk-b-advantage-list {\n        grid-template-columns: 1fr;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-layout-b-wrap\"\u003e\n    \u003c!-- 顶部横幅 --\u003e\n    \u003cdiv class=\"rk-b-hero\"\u003e\n        \u003cspan class=\"rk-brand-tag\"\u003eRapidKeen Industrial\u003c\/span\u003e\n        \u003ch1\u003ePremium Aluminum Alloy Tubes\u003c\/h1\u003e\n        \u003cp\u003eIndustrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. Ideal for precision fabrication, structural engineering and custom manufacturing projects.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 核心特性 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eCore Performance Characteristics\u003c\/h3\u003e\n        \u003cp\u003eOur hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish.\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-features-grid\"\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e⚙\u003c\/div\u003e\n                \u003ch4\u003eHigh Strength-to-Weight Ratio\u003c\/h4\u003e\n                \u003cp\u003eRemarkable structural strength while far lighter than steel. Reduces assembly weight, lowers shipping costs and improves energy efficiency for automotive and robotics use.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e🛡\u003c\/div\u003e\n                \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n                \u003cp\u003eNatural oxide layer protects against moisture, air and common industrial chemicals. Reliable performance for both indoor and outdoor long-term service.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e🔧\u003c\/div\u003e\n                \u003ch4\u003eSuperior Machinability\u003c\/h4\u003e\n                \u003cp\u003eWorks perfectly with CNC machining, drilling, milling, bending and flaring. Clean burr-free cuts and stable tolerances for complex fabrication processes.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e✨\u003c\/div\u003e\n                \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n                \u003cp\u003eCompatible with anodizing, powder coating, polishing and sandblasting. Hard uniform anodized layer boosts wear resistance and visual quality.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e📏\u003c\/div\u003e\n                \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n                \u003cp\u003ePrecision extrusion and cold-drawing ensure accurate OD, ID and wall thickness. Excellent concentricity for precision fitting and mechanical assemblies.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e⚡\u003c\/div\u003e\n                \u003ch4\u003eThermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n                \u003cp\u003eStrong thermal performance for heat sinks and cooling systems. Reliable electrical conductivity for grounding and electronic housing parts.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 产品形态 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eAvailable Product Forms\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan class=\"rk-b-gold\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-b-form-item\"\u003e\n            \u003cdiv class=\"rk-b-form-img\"\u003eSeamless Tube\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-form-text\"\u003e\n                \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n                \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-b-form-item reverse\"\u003e\n            \u003cdiv class=\"rk-b-form-img\"\u003ePrecision Tube\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-form-text\"\u003e\n                \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n                \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 应用场景 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eTypical Industrial Applications\u003c\/h3\u003e\n        \u003cp\u003eWidely adopted across diverse industrial sectors, our aluminum alloy tubes support a broad range of professional use cases. The most common application areas include:\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-apps-grid\"\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eAutomation \u0026amp; Robotics\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                        \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                        \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                        \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                        \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eAutomotive \u0026amp; Transportation\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                        \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                        \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                        \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                        \u003cli\u003eCooling system piping\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eElectronics \u0026amp; Thermal\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                        \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                        \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                        \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                        \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eArchitectural \u0026amp; Construction\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                        \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                        \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                        \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                        \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003ePrecision Engineering\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                        \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                        \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                        \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                        \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eGeneral Manufacturing\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                        \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                        \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                        \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                        \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 服务优势 --\u003e\n    \u003cdiv class=\"rk-b-advantage-card\"\u003e\n        \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan class=\"rk-b-highlight\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-advantage-list\"\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 品牌底部 --\u003e\n    \u003cdiv class=\"rk-b-brand-footer\"\u003e\n        \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n        \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n    \u003c\/div\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 55mm (2.165\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797579857979,"sku":null,"price":25.58,"currency_code":"USD","in_stock":true},{"title":"OD 55mm (2.165\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797579825211,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 3mm (0.12\") \/ 500mm 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0;\n}\n.rk-b-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 12px 30px;\n    margin-top: 20px;\n}\n.rk-b-advantage-item {\n    font-size: 16px;\n    padding-left: 28px;\n    position: relative;\n    color: #444444;\n}\n.rk-b-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n    font-size: 18px;\n}\n\n\/* 品牌底部 *\/\n.rk-b-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 10px;\n}\n.rk-b-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n.rk-b-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n    text-align: center;\n}\n\n\/* 响应式 *\/\n@media screen and (max-width: 992px) {\n    .rk-b-features-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n    .rk-b-apps-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n    .rk-b-form-item,\n    .rk-b-form-item.reverse {\n        flex-direction: column;\n    }\n    .rk-b-form-img {\n        width: 100%;\n        height: 140px;\n    }\n}\n@media screen and (max-width: 768px) {\n    .rk-layout-b-wrap {\n        padding: 0 15px 30px;\n    }\n    .rk-b-hero {\n        padding: 35px 25px;\n    }\n    .rk-b-hero h1 {\n        font-size: 26px;\n    }\n    .rk-b-hero p {\n        font-size: 15px;\n        max-width: 100%;\n    }\n    .rk-b-section-card {\n        padding: 25px 20px;\n        margin-bottom: 25px;\n    }\n    .rk-b-section-title {\n        font-size: 20px;\n    }\n    .rk-b-section-card p {\n        font-size: 15px;\n    }\n    .rk-b-features-grid,\n    .rk-b-apps-grid,\n    .rk-b-advantage-list {\n        grid-template-columns: 1fr;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-layout-b-wrap\"\u003e\n    \u003c!-- 顶部横幅 --\u003e\n    \u003cdiv class=\"rk-b-hero\"\u003e\n        \u003cspan class=\"rk-brand-tag\"\u003eRapidKeen Industrial\u003c\/span\u003e\n        \u003ch1\u003ePremium Aluminum Alloy Tubes\u003c\/h1\u003e\n        \u003cp\u003eIndustrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. Ideal for precision fabrication, structural engineering and custom manufacturing projects.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 核心特性 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eCore Performance Characteristics\u003c\/h3\u003e\n        \u003cp\u003eOur hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish.\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-features-grid\"\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e⚙\u003c\/div\u003e\n                \u003ch4\u003eHigh Strength-to-Weight Ratio\u003c\/h4\u003e\n                \u003cp\u003eRemarkable structural strength while far lighter than steel. Reduces assembly weight, lowers shipping costs and improves energy efficiency for automotive and robotics use.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e🛡\u003c\/div\u003e\n                \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n                \u003cp\u003eNatural oxide layer protects against moisture, air and common industrial chemicals. Reliable performance for both indoor and outdoor long-term service.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e🔧\u003c\/div\u003e\n                \u003ch4\u003eSuperior Machinability\u003c\/h4\u003e\n                \u003cp\u003eWorks perfectly with CNC machining, drilling, milling, bending and flaring. Clean burr-free cuts and stable tolerances for complex fabrication processes.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e✨\u003c\/div\u003e\n                \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n                \u003cp\u003eCompatible with anodizing, powder coating, polishing and sandblasting. Hard uniform anodized layer boosts wear resistance and visual quality.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e📏\u003c\/div\u003e\n                \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n                \u003cp\u003ePrecision extrusion and cold-drawing ensure accurate OD, ID and wall thickness. Excellent concentricity for precision fitting and mechanical assemblies.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e⚡\u003c\/div\u003e\n                \u003ch4\u003eThermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n                \u003cp\u003eStrong thermal performance for heat sinks and cooling systems. Reliable electrical conductivity for grounding and electronic housing parts.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 产品形态 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eAvailable Product Forms\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan class=\"rk-b-gold\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-b-form-item\"\u003e\n            \u003cdiv class=\"rk-b-form-img\"\u003eSeamless Tube\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-form-text\"\u003e\n                \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n                \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-b-form-item reverse\"\u003e\n            \u003cdiv class=\"rk-b-form-img\"\u003ePrecision Tube\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-form-text\"\u003e\n                \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n                \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 应用场景 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eTypical Industrial Applications\u003c\/h3\u003e\n        \u003cp\u003eWidely adopted across diverse industrial sectors, our aluminum alloy tubes support a broad range of professional use cases. The most common application areas include:\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-apps-grid\"\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eAutomation \u0026amp; Robotics\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                        \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                        \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                        \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                        \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eAutomotive \u0026amp; Transportation\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                        \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                        \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                        \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                        \u003cli\u003eCooling system piping\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eElectronics \u0026amp; Thermal\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                        \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                        \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                        \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                        \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eArchitectural \u0026amp; Construction\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                        \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                        \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                        \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                        \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003ePrecision Engineering\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                        \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                        \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                        \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                        \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eGeneral Manufacturing\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                        \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                        \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                        \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                        \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 服务优势 --\u003e\n    \u003cdiv class=\"rk-b-advantage-card\"\u003e\n        \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan class=\"rk-b-highlight\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-advantage-list\"\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 品牌底部 --\u003e\n    \u003cdiv class=\"rk-b-brand-footer\"\u003e\n        \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n        \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n    \u003c\/div\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 60mm (2.362\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797657157691,"sku":null,"price":30.5,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797657124923,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 60mm (2.362\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797657190459,"sku":null,"price":37.22,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797657223227,"sku":null,"price":50.66,"currency_code":"USD","in_stock":true},{"title":"OD 60mm (2.362\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797657255995,"sku":null,"price":58.94,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797652734011,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797652701243,"sku":null,"price":3.52,"currency_code":"USD","in_stock":true},{"title":"OD 5mm (0.2\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797652766779,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797652799547,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 5mm (0.2\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797652832315,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797652897851,"sku":null,"price":4.26,"currency_code":"USD","in_stock":true},{"title":"OD 6mm (0.236\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797652865083,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797652930619,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797652963387,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 6mm (0.236\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797652996155,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797653061691,"sku":null,"price":4.88,"currency_code":"USD","in_stock":true},{"title":"OD 7mm (0.276\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797653028923,"sku":null,"price":4.27,"currency_code":"USD","in_stock":true},{"title":"OD 7mm (0.276\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797653094459,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797653127227,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 7mm (0.276\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797653159995,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 8mm (0.315\") \/ WT 2mm (0.08\") \/ 500mm 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(19.7\")","offer_id":43797656928315,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 50mm (1.969\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797656993851,"sku":null,"price":23.52,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797656961083,"sku":null,"price":16.8,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797657026619,"sku":null,"price":34.12,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797657059387,"sku":null,"price":40.32,"currency_code":"USD","in_stock":true},{"title":"OD 50mm (1.969\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797657092155,"sku":null,"price":46.54,"currency_code":"USD","in_stock":true},{"title":"OD 55mm (2.165\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797652570171,"sku":null,"price":25.58,"currency_code":"USD","in_stock":true},{"title":"OD 55mm (2.165\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797652537403,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797652602939,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797652635707,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 55mm (2.165\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797652668475,"sku":null,"price":49.64,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797657321531,"sku":null,"price":34.88,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797657288763,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797657354299,"sku":null,"price":50.4,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797657387067,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797657419835,"sku":null,"price":79.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4473\/6059\/files\/aluminumalloytube.webp?v=1784130025"},{"product_id":"industrial-hollow-round-aluminum-alloy-tubes-custom-cut-to-length-9","title":"Aluminum Alloy Tube OD 70mm (2.756\") custom","description":"\u003cstyle\u003e\n.rk-layout-b-wrap {\n    width: 100%;\n    max-width: 1200px;\n    margin: 0 auto;\n    padding: 0 20px 40px;\n    font-family: -apple-system, 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grid;\n    grid-template-columns: repeat(3, 1fr);\n    gap: 20px;\n    margin-top: 20px;\n}\n.rk-b-app-card {\n    border-radius: 10px;\n    overflow: hidden;\n    border: 1px solid #e0eef7;\n    transition: all 0.3s ease;\n}\n.rk-b-app-card:hover {\n    box-shadow: 0 6px 18px rgba(0, 89, 105, 0.1);\n    border-color: #00AAFF;\n}\n.rk-b-app-header {\n    background: #005969;\n    color: #d4af37;\n    padding: 14px 18px;\n    font-size: 16px;\n    font-weight: 600;\n}\n.rk-b-app-body {\n    padding: 18px;\n    background: #fdfefe;\n}\n.rk-b-app-body ul {\n    margin: 0;\n    padding-left: 18px;\n    font-size: 15px;\n    color: #555555;\n}\n.rk-b-app-body li {\n    margin-bottom: 5px;\n}\n\n\/* 优势金色边框卡片 *\/\n.rk-b-advantage-card {\n    border: 2px solid #d4af37;\n    border-radius: 12px;\n    padding: 35px;\n    background: linear-gradient(135deg, #fffdf7 0%, #ffffff 100%);\n}\n.rk-b-advantage-card h3 {\n    color: #b87333;\n    font-size: 22px;\n    margin: 0 0 15px 0;\n}\n.rk-b-advantage-list {\n    display: grid;\n    grid-template-columns: repeat(2, 1fr);\n    gap: 12px 30px;\n    margin-top: 20px;\n}\n.rk-b-advantage-item {\n    font-size: 16px;\n    padding-left: 28px;\n    position: relative;\n    color: #444444;\n}\n.rk-b-advantage-item::before {\n    content: \"✓\";\n    position: absolute;\n    left: 0;\n    color: #d4af37;\n    font-weight: 700;\n    font-size: 18px;\n}\n\n\/* 品牌底部 *\/\n.rk-b-brand-footer {\n    text-align: center;\n    padding-top: 30px;\n    border-top: 2px solid #9EC9F2;\n    margin-top: 10px;\n}\n.rk-b-brand-footer .rk-brand-name {\n    font-size: 24px;\n    font-weight: 700;\n    color: #005969;\n    letter-spacing: 1px;\n    margin-bottom: 8px;\n}\n.rk-b-brand-footer p {\n    font-size: 15px;\n    color: #777777;\n    text-align: center;\n}\n\n\/* 响应式 *\/\n@media screen and (max-width: 992px) {\n    .rk-b-features-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n    .rk-b-apps-grid {\n        grid-template-columns: repeat(2, 1fr);\n    }\n    .rk-b-form-item,\n    .rk-b-form-item.reverse {\n        flex-direction: column;\n    }\n    .rk-b-form-img {\n        width: 100%;\n        height: 140px;\n    }\n}\n@media screen and (max-width: 768px) {\n    .rk-layout-b-wrap {\n        padding: 0 15px 30px;\n    }\n    .rk-b-hero {\n        padding: 35px 25px;\n    }\n    .rk-b-hero h1 {\n        font-size: 26px;\n    }\n    .rk-b-hero p {\n        font-size: 15px;\n        max-width: 100%;\n    }\n    .rk-b-section-card {\n        padding: 25px 20px;\n        margin-bottom: 25px;\n    }\n    .rk-b-section-title {\n        font-size: 20px;\n    }\n    .rk-b-section-card p {\n        font-size: 15px;\n    }\n    .rk-b-features-grid,\n    .rk-b-apps-grid,\n    .rk-b-advantage-list {\n        grid-template-columns: 1fr;\n    }\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"rk-layout-b-wrap\"\u003e\n    \u003c!-- 顶部横幅 --\u003e\n    \u003cdiv class=\"rk-b-hero\"\u003e\n        \u003cspan class=\"rk-brand-tag\"\u003eRapidKeen Industrial\u003c\/span\u003e\n        \u003ch1\u003ePremium Aluminum Alloy Tubes\u003c\/h1\u003e\n        \u003cp\u003eIndustrial-grade aluminum-magnesium-silicon alloy tubes engineered for high strength, lightweight performance and long-term durability. Ideal for precision fabrication, structural engineering and custom manufacturing projects.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 核心特性 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eCore Performance Characteristics\u003c\/h3\u003e\n        \u003cp\u003eOur hollow aluminum tubes deliver exceptional machinability, consistent dimensional accuracy and excellent corrosion resistance, manufactured under strict process controls to ensure uniform wall distribution, perfect roundness and smooth surface finish.\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-features-grid\"\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e⚙\u003c\/div\u003e\n                \u003ch4\u003eHigh Strength-to-Weight Ratio\u003c\/h4\u003e\n                \u003cp\u003eRemarkable structural strength while far lighter than steel. Reduces assembly weight, lowers shipping costs and improves energy efficiency for automotive and robotics use.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e🛡\u003c\/div\u003e\n                \u003ch4\u003eExcellent Corrosion Resistance\u003c\/h4\u003e\n                \u003cp\u003eNatural oxide layer protects against moisture, air and common industrial chemicals. Reliable performance for both indoor and outdoor long-term service.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e🔧\u003c\/div\u003e\n                \u003ch4\u003eSuperior Machinability\u003c\/h4\u003e\n                \u003cp\u003eWorks perfectly with CNC machining, drilling, milling, bending and flaring. Clean burr-free cuts and stable tolerances for complex fabrication processes.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e✨\u003c\/div\u003e\n                \u003ch4\u003ePremium Surface Treatability\u003c\/h4\u003e\n                \u003cp\u003eCompatible with anodizing, powder coating, polishing and sandblasting. Hard uniform anodized layer boosts wear resistance and visual quality.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e📏\u003c\/div\u003e\n                \u003ch4\u003eTight Dimensional Precision\u003c\/h4\u003e\n                \u003cp\u003ePrecision extrusion and cold-drawing ensure accurate OD, ID and wall thickness. Excellent concentricity for precision fitting and mechanical assemblies.\u003c\/p\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-feature-card\"\u003e\n                \u003cdiv class=\"rk-b-feature-icon\"\u003e⚡\u003c\/div\u003e\n                \u003ch4\u003eThermal \u0026amp; Electrical Conductivity\u003c\/h4\u003e\n                \u003cp\u003eStrong thermal performance for heat sinks and cooling systems. Reliable electrical conductivity for grounding and electronic housing parts.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 产品形态 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eAvailable Product Forms\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan class=\"rk-b-gold\"\u003eRapidKeen\u003c\/span\u003e offers aluminum alloy tubes in multiple configurations to match your exact application requirements. All tubes can be supplied as standard stock lengths or custom cut to your specified dimensions.\u003c\/p\u003e\n        \n        \u003cdiv class=\"rk-b-form-item\"\u003e\n            \u003cdiv class=\"rk-b-form-img\"\u003eSeamless Tube\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-form-text\"\u003e\n                \u003ch4\u003eSeamless Industrial Aluminum Tubes\u003c\/h4\u003e\n                \u003cp\u003eEngineered for structural load-bearing and general industrial use, these seamless tubes feature uniform wall thickness and high mechanical strength. Suitable for frame construction, support rails, piping systems and general fabrication where reliability and consistency are essential.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv class=\"rk-b-form-item reverse\"\u003e\n            \u003cdiv class=\"rk-b-form-img\"\u003ePrecision Tube\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-form-text\"\u003e\n                \u003ch4\u003ePrecision Hollow Round Tubes\u003c\/h4\u003e\n                \u003cp\u003eManufactured to tighter tolerance grades for precision mechanical applications. With smooth inner and outer surfaces and excellent concentricity, they are ideal for sliding components, bushing sleeves, pneumatic cylinders and instrumentation parts where accurate fit is critical.\u003c\/p\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 应用场景 --\u003e\n    \u003cdiv class=\"rk-b-section-card\"\u003e\n        \u003ch3 class=\"rk-b-section-title\"\u003eTypical Industrial Applications\u003c\/h3\u003e\n        \u003cp\u003eWidely adopted across diverse industrial sectors, our aluminum alloy tubes support a broad range of professional use cases. The most common application areas include:\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-apps-grid\"\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eAutomation \u0026amp; Robotics\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eLinear motion guide rails\u003c\/li\u003e\n                        \u003cli\u003eRobotic arm structural tubes\u003c\/li\u003e\n                        \u003cli\u003eConveyor system frames\u003c\/li\u003e\n                        \u003cli\u003eAutomation equipment supports\u003c\/li\u003e\n                        \u003cli\u003ePneumatic cylinder barrels\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eAutomotive \u0026amp; Transportation\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eLightweight chassis components\u003c\/li\u003e\n                        \u003cli\u003eBicycle frame tubing\u003c\/li\u003e\n                        \u003cli\u003eEV battery pack structures\u003c\/li\u003e\n                        \u003cli\u003eInterior trim \u0026amp; brackets\u003c\/li\u003e\n                        \u003cli\u003eCooling system piping\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eElectronics \u0026amp; Thermal\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eHeat exchanger tubes\u003c\/li\u003e\n                        \u003cli\u003eElectronic enclosure frames\u003c\/li\u003e\n                        \u003cli\u003eLED lighting housings\u003c\/li\u003e\n                        \u003cli\u003eHeat sink structural parts\u003c\/li\u003e\n                        \u003cli\u003eEMI shielding components\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eArchitectural \u0026amp; Construction\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eHandrail \u0026amp; guardrail systems\u003c\/li\u003e\n                        \u003cli\u003eCurtain wall support frames\u003c\/li\u003e\n                        \u003cli\u003eWindow \u0026amp; door structures\u003c\/li\u003e\n                        \u003cli\u003eDisplay stand \u0026amp; signage frames\u003c\/li\u003e\n                        \u003cli\u003eFurniture structural tubing\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003ePrecision Engineering\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eCNC machined custom parts\u003c\/li\u003e\n                        \u003cli\u003eInstrumentation housings\u003c\/li\u003e\n                        \u003cli\u003eTesting fixture components\u003c\/li\u003e\n                        \u003cli\u003eHydraulic system parts\u003c\/li\u003e\n                        \u003cli\u003eMedical equipment structures\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n            \u003cdiv class=\"rk-b-app-card\"\u003e\n                \u003cdiv class=\"rk-b-app-header\"\u003eGeneral Manufacturing\u003c\/div\u003e\n                \u003cdiv class=\"rk-b-app-body\"\u003e\n                    \u003cul\u003e\n                        \u003cli\u003eCustom machine frames\u003c\/li\u003e\n                        \u003cli\u003eWorkbench \u0026amp; table legs\u003c\/li\u003e\n                        \u003cli\u003ePackaging equipment parts\u003c\/li\u003e\n                        \u003cli\u003eAgricultural machinery components\u003c\/li\u003e\n                        \u003cli\u003eMarine hardware \u0026amp; fittings\u003c\/li\u003e\n                    \u003c\/ul\u003e\n                \u003c\/div\u003e\n            \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 服务优势 --\u003e\n    \u003cdiv class=\"rk-b-advantage-card\"\u003e\n        \u003ch3\u003eCustom Fabrication \u0026amp; Service Advantages\u003c\/h3\u003e\n        \u003cp\u003e\u003cspan class=\"rk-b-highlight\"\u003eRapidKeen\u003c\/span\u003e supports full customization to match your exact project specifications. From prototype quantities to bulk production runs, we deliver consistent quality and reliable lead times for every order.\u003c\/p\u003e\n        \u003cdiv class=\"rk-b-advantage-list\"\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCustom cut-to-length service with precision sawing\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eFull range of outer diameters and wall thicknesses\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCNC drilling, tapping and milling secondary operations\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eTube bending, flaring and end forming available\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eAnodizing and powder coating surface finish options\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eSmall batch prototypes and large volume production\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eStrict process control for consistent material quality\u003c\/div\u003e\n            \u003cdiv class=\"rk-b-advantage-item\"\u003eCareful packaging to protect surface finish in transit\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- 品牌底部 --\u003e\n    \u003cdiv class=\"rk-b-brand-footer\"\u003e\n        \u003cdiv class=\"rk-brand-name\"\u003eRapidKeen\u003c\/div\u003e\n        \u003cp\u003ePremium Industrial Metal Materials \u0026amp; Custom Fabrication Solutions\u003c\/p\u003e\n    \u003c\/div\u003e\n\u003c\/div\u003e","brand":"RapidKeen","offers":[{"title":"OD 70mm (2.756\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797684650043,"sku":null,"price":34.88,"currency_code":"USD","in_stock":true},{"title":"OD 70mm (2.756\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797684617275,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 70mm (2.756\") \/ WT 3mm (0.12\") \/ 500mm 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(19.7\")","offer_id":43797680685115,"sku":null,"price":4.88,"currency_code":"USD","in_stock":true},{"title":"OD 9mm (0.354\") \/ WT 3mm (0.12\") \/ 500mm (19.7\")","offer_id":43797680750651,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 9mm (0.354\") \/ WT 4mm (0.157\") \/ 500mm (19.7\")","offer_id":43797680783419,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 9mm (0.354\") \/ WT 5mm (0.2\") \/ 500mm (19.7\")","offer_id":43797680816187,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"OD 10mm (0.394\") \/ WT 2mm (0.08\") \/ 500mm (19.7\")","offer_id":43797680881723,"sku":null,"price":6.22,"currency_code":"USD","in_stock":true},{"title":"OD 10mm (0.394\") \/ WT 1mm (0.04\") \/ 500mm (19.7\")","offer_id":43797680848955,"sku":null,"price":4.98,"currency_code":"USD","in_stock":true},{"title":"OD 10mm (0.394\") \/ WT 3mm (0.12\") \/ 500mm 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