{"product_id":"pultruded-square-inner-round-carbon-fiber-hollow-tube-8-8mmod-6-5mmid-1000mml","title":"Pultruded Square Inner round Carbon Fiber Hollow Tube 8*8mm(OD) * 6.5mm(ID) * 1000mm(L)","description":"\u003cmeta name=\"description\" content=\"Buy Pultruded Square Inner round Carbon Fiber Hollow Tube 8*8mm(OD) * 6.5mm(ID) * 1000mm(L) online in India at best price from The Tech Depot, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\n\u003ch1\u003ePultruded Square Inner round Carbon Fiber Hollow Tube 8*8mm(OD) * 6.5mm(ID) * 1000mm(L)\u003c\/h1\u003e\n\n\u003cp\u003eThis pultruded carbon fiber hollow tube features a square outer profile of 8x8mm with a rounded inner diameter of 6.5mm, delivering exceptional strength-to-weight ratio for precision engineering applications. Professional engineers and composite specialists use these tubes in aerospace components, robotic arms, drone frames, and structural reinforcement where weight reduction and rigidity are critical performance parameters. The tube solves the engineering challenge of requiring high stiffness with minimal mass while maintaining dimensional accuracy and consistent material properties throughout the 1000mm length.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003ePultruded carbon fiber tubes are manufactured through a continuous pultrusion process where carbon fiber reinforcement is drawn through a resin bath and heated die, creating a homogeneous composite structure with superior fiber alignment along the longitudinal axis. This manufacturing method ensures consistent wall thickness, precise dimensional tolerances, and uniform mechanical properties that cannot be achieved through hand-layup or filament winding techniques. The square outer geometry provides excellent mounting surfaces and structural efficiency, while the rounded inner diameter allows for smooth internal passages and reduced stress concentration points.\u003c\/p\u003e\n\n\u003cp\u003eThe 8x8mm outer dimension with 6.5mm inner diameter yields a wall thickness of approximately 0.75mm, optimizing the balance between structural rigidity and material efficiency. Carbon fiber composites exhibit tensile strength exceeding 600 MPa with a modulus of elasticity around 230 GPa, making this tube ideal for applications requiring precision alignment, vibration damping, and long-term dimensional stability. The pultruded construction eliminates porosity and voids common in other manufacturing methods, ensuring reliable performance in demanding aerospace, automotive, and industrial automation environments.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecification\u003c\/td\u003e\n\u003ctd\u003eDetails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003ePultruded Carbon Fiber Hollow Square Tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter Dimension\u003c\/td\u003e\n\u003ctd\u003e8mm x 8mm Square\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInner Diameter\u003c\/td\u003e\n\u003ctd\u003e6.5mm Rounded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWall Thickness\u003c\/td\u003e\n\u003ctd\u003eApproximately 0.75mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e1000mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial Composition\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber Reinforced Polymer (CFRP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiber Type\u003c\/td\u003e\n\u003ctd\u003eUnidirectional Carbon Fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResin System\u003c\/td\u003e\n\u003ctd\u003eEpoxy Matrix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength\u003c\/td\u003e\n\u003ctd\u003eGreater than 600 MPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElastic Modulus\u003c\/td\u003e\n\u003ctd\u003eApproximately 230 GPa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDensity\u003c\/td\u003e\n\u003ctd\u003eApproximately 1.6 g\/cm3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7 days on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping\u003c\/td\u003e\n\u003ctd\u003e1-5 days from Bengaluru\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003e7-8 days across India\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003e24\/7 via Email and WhatsApp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eExceptional strength-to-weight ratio with carbon fiber tensile strength exceeding 600 MPa, delivering structural performance equivalent to steel at one-fifth the weight for aerospace and drone applications\u003c\/li\u003e\n\u003cli\u003ePrecision pultruded construction ensuring consistent wall thickness, tight dimensional tolerances within plus-minus 0.1mm, and uniform fiber alignment for reliable engineering calculations\u003c\/li\u003e\n\u003cli\u003eSquare outer profile with rounded inner diameter providing optimal mounting surfaces, reduced stress concentration, and smooth internal passages for cable routing or fluid flow applications\u003c\/li\u003e\n\u003cli\u003eSuperior rigidity with elastic modulus around 230 GPa enabling minimal deflection under load, ideal for precision robotic systems, optical bench frames, and vibration-sensitive instrumentation\u003c\/li\u003e\n\u003cli\u003eExcellent chemical and environmental resistance with epoxy matrix protecting against moisture absorption, UV degradation, and corrosive industrial environments for long-term durability\u003c\/li\u003e\n\u003cli\u003eLow thermal expansion coefficient minimizing dimensional changes across temperature variations, critical for precision alignment in aerospace and thermal cycling applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications and Use Cases\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAerospace structural components including wing reinforcement ribs, fuselage stiffeners, and control surface actuator mounts where weight reduction directly improves fuel efficiency and payload capacity\u003c\/li\u003e\n\u003cli\u003eUnmanned aerial vehicle (UAV) frame construction for drone arms, booms, and fuselage sections requiring maximum strength with minimal mass to extend flight duration and improve maneuverability\u003c\/li\u003e\n\u003cli\u003eRobotic systems and automation equipment including robotic arm segments, precision positioning frames, and vibration isolation structures where stiffness prevents deflection-induced positioning errors\u003c\/li\u003e\n\u003cli\u003ePrecision instrumentation and optical bench frameworks for laboratory equipment, laser systems, and measurement apparatus requiring dimensional stability and low thermal drift across extended operation periods\u003c\/li\u003e\n\u003cli\u003eAutomotive racing applications including roll cage reinforcement, suspension components, and chassis bracing for high-performance vehicles where weight savings improve acceleration and handling dynamics\u003c\/li\u003e\n\u003cli\u003eWind turbine blade internal structure and control rod mechanisms where carbon fiber tubes provide the required strength for multi-megawatt installations while reducing overall system weight\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003cp\u003eBegin by carefully measuring and marking your cutting points on the tube using a fine-tipped marker and precision ruler to ensure accurate dimensions for your application. When cutting, use a diamond-grit saw blade or carbide-toothed band saw running at moderate speeds with light pressure to prevent fiber fraying and delamination at the cut edges. Always wear appropriate personal protective equipment including safety glasses and a dust mask, as carbon fiber particles can be irritating to respiratory systems and skin.\u003c\/p\u003e\n\n\u003cp\u003eFor joining and assembly, prepare tube ends by lightly sanding with 220-grit sandpaper to remove any rough fibers and create a clean surface. When bonding with epoxy adhesives, apply a thin, even coat to both mating surfaces and clamp firmly for the recommended cure time, typically 24 hours at room temperature. For mechanical fastening, drill pilot holes slightly smaller than your fastener diameter to prevent stress concentration, and use washers to distribute loads across the composite surface. Always allow adequate clearance around internal passages if routing cables or conducting fluid flow, and avoid sharp bends that could induce micro-cracking in the carbon fiber matrix.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the maximum load capacity of this 8x8mm carbon fiber tube?\u003c\/summary\u003e\n\u003cp\u003eThe maximum load capacity depends on the specific application configuration, support conditions, and safety factor requirements. For a 1000mm unsupported span with simply supported boundary conditions, the tube can typically support approximately 15-20 kg of distributed load before exceeding 2mm deflection. However, for precise load calculations, consider the tube's moment of inertia (approximately 10.67 mm4 for this geometry) and apply engineering formulas based on your specific mounting and loading conditions. For critical aerospace applications, perform finite element analysis or consult with composite engineers for validated load ratings.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan this carbon fiber tube be cut to custom lengths?\u003c\/summary\u003e\n\u003cp\u003eYes, the tube can be cut to custom lengths using appropriate cutting tools. We recommend using a diamond-grit saw blade or carbide-toothed band saw at moderate speeds with light pressure to achieve clean cuts without fiber fraying or delamination. Cutting speeds should typically be 1000-2000 RPM depending on blade diameter. After cutting, lightly sand the cut edges with 220-grit sandpaper to remove any rough fibers. We offer custom cutting services at The Tech Depot for orders of 5 or more units at no additional charge within 2mm tolerance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between pultruded and filament-wound carbon fiber tubes?\u003c\/summary\u003e\n\u003cp\u003ePultruded tubes feature unidirectional fiber alignment along the longitudinal axis, providing superior axial strength and stiffness with excellent dimensional consistency and minimal porosity. Filament-wound tubes have fibers wound at various angles (typically 0, plus-45, and 90 degrees), distributing strength in multiple directions but with slightly lower axial properties and potential micro-voids at winding intersections. Pultruded tubes are ideal for applications requiring maximum longitudinal strength and precision dimensions, while filament-wound tubes offer better torsional resistance and are preferred for pressure vessels or applications requiring multi-directional loading.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this carbon fiber tube suitable for outdoor and UV exposure?\u003c\/summary\u003e\n\u003cp\u003eThe epoxy resin matrix provides good UV resistance, but extended direct sunlight exposure may cause surface degradation and color fading over 5-10 years. For outdoor applications, we recommend applying a UV-protective clear coating or paint to extend the tube's service life. The carbon fiber itself is unaffected by UV radiation, so structural properties remain intact even with surface discoloration. For critical outdoor aerospace or marine applications, specify UV-stabilized epoxy systems or protective coatings during the manufacturing process.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eOrders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India. Express shipping options are available for urgent requirements at additional cost. You will receive tracking information via email and WhatsApp immediately after dispatch.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return and warranty policy?\u003c\/summary\u003e\n\u003cp\u003eWe offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Manufacturing defects include delamination, visible cracks, dimensional variance exceeding plus-minus 0.2mm, or resin voids affecting structural integrity. This warranty does not apply to damage caused by improper cutting, drilling, handling, or misuse of the product.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote. Volume discounts increase with order quantity, and we offer special pricing for educational institutions, research organizations, and manufacturing enterprises. Lead times for bulk orders may vary based on quantity and customization requirements.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eWhy Buy from The Tech Depot\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Products: Sourced directly from authorized distributors with authentication certificates and material compliance documentation\u003c\/li\u003e\n\u003cli\u003eExpert Team: Our technical team validates every product before listing and provides engineering consultation for application suitability\u003c\/li\u003e\n\u003cli\u003eFast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse with real-time tracking\u003c\/li\u003e\n\u003cli\u003ePan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat\u003c\/li\u003e\n\u003cli\u003ePayment Options: COD, UPI, credit\/debit cards, net banking, and EMI available for orders above specified amounts\u003c\/li\u003e\n\u003cli\u003eTechnical Support: 24\/7 expert guidance via email and WhatsApp for product selection, application design, and troubleshooting\u003c\/li\u003e\n\u003cli\u003eReturns: 7-day return policy on manufacturing defects with free replacement or full refund\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuy Pultruded Square Inner round Carbon Fiber Hollow Tube 8*8mm(OD) * 6.5mm(ID) * 1000mm\n\u003ch2\u003eBuy Pultruded Square Inner round Carbon Fiber Hollow Tube 8*8mm(OD) * 6.5mm(ID) * 1000mm(L) Online in India\u003c\/h2\u003e\n\u003c\/h2\u003e\u003cp\u003ePurchase the \u003cstrong\u003ePultruded Square Inner round Carbon Fiber Hollow Tube 8*8mm(OD) * 6.5mm(ID) * 1000mm(L)\u003c\/strong\u003e online at \u003ca href=\"https:\/\/thetechdepot.in\"\u003eThe Tech Depot\u003c\/a\u003e, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat.\u003c\/p\u003e\n\u003cp\u003eOur team in Bengaluru is available 24\/7 to support your journey from product selection to project completion.\u003c\/p\u003e","brand":"The Tech Depot","offers":[{"title":"Default Title","offer_id":48743741882625,"sku":"TES-EV0882477","price":1014.42,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/1577\/3185\/files\/Square-Carbon-Fiber-Rod-5-314x252_6ce2a0b2-9c55-4eda-9439-41b3e6c06ae1.jpg?v=1778062531","url":"https:\/\/techdepot.in\/products\/pultruded-square-inner-round-carbon-fiber-hollow-tube-8-8mmod-6-5mmid-1000mml","provider":"Tech Depot India","version":"1.0","type":"link"}