Pultruded Carbon Fiber Tube (Hollow) 5mm(OD) * 3mm (ID)* 1000mm (Pack of 2)

The Pultruded Carbon Fiber Tube is a high-strength, lightweight hollow structural component manufactured through continuous pultrusion process, delivering exceptional stiffness-to-weight ratios ideal for precision engineering applications. This 5mm outer diameter tube with 3mm inner diameter and 1000mm length is engineered for robotics, aerospace prototyping, drone frames, and precision mechanical assemblies where weight reduction and structural integrity are critical. The pultrusion process aligns carbon fibers unidirectionally, solving the challenge of creating rigid yet lightweight components that traditional materials cannot achieve without significant weight penalties.

Product Overview

Pultruded carbon fiber tubes are manufactured through a continuous pultrusion process where carbon fiber reinforcement is drawn through a resin bath and cured in a heated die, creating a uniform, high-quality composite structure. This manufacturing method ensures consistent fiber alignment, superior strength characteristics, and excellent dimensional tolerance. The resulting hollow tube provides maximum structural efficiency by concentrating material at the outer diameter where bending stiffness is most effective, making it ideal for load-bearing applications requiring minimal weight. The 1mm wall thickness (calculated from 5mm OD and 3mm ID) delivers an optimal balance between rigidity and material efficiency.

What distinguishes this pultruded carbon fiber tube is its unidirectional fiber orientation, which provides exceptional longitudinal strength and stiffness along the tube axis while maintaining the inherent damping characteristics of composite materials. The resin matrix is typically epoxy-based, offering superior chemical resistance and environmental stability compared to polyester alternatives. This pack of two 1000mm tubes provides sufficient material for complete drone arm assemblies, robotic manipulator segments, or precision measurement instrument frames. The hollow design allows for internal cable routing, sensor integration, and weight optimization in space-constrained applications.

Key Specifications

Specification	Details
Product Type	Pultruded Carbon Fiber Hollow Tube
Outer Diameter (OD)	5mm
Inner Diameter (ID)	3mm
Wall Thickness	1mm
Length per Tube	1000mm
Pack Quantity	2 tubes
Total Length	2000mm
Material Composition	Carbon Fiber Reinforced Epoxy Resin
Fiber Orientation	Unidirectional
Manufacturing Process	Continuous Pultrusion
Density	Approximately 1.6 g/cm3
Tensile Strength	3500+ MPa
Flexural Modulus	230+ GPa
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp

Key Features

• Exceptional Strength-to-Weight Ratio: Carbon fiber construction delivers tensile strength exceeding 3500 MPa with density around 1.6 g/cm3, making it 5 times stronger than aluminum at half the weight for aerospace and robotics applications
• Unidirectional Fiber Alignment: Pultrusion process ensures all carbon fibers are aligned longitudinally, maximizing axial stiffness and load-bearing capacity for structural applications
• Precision Dimensional Tolerance: Continuous pultrusion manufacturing maintains consistent 5mm OD and 3mm ID specifications across the entire 1000mm length, enabling seamless integration into precision assemblies
• Hollow Design for Weight Optimization: 1mm wall thickness provides optimal moment of inertia for bending resistance while minimizing material usage, critical for drone frames and robotic manipulators
• Superior Chemical and Environmental Resistance: Epoxy resin matrix resists moisture absorption, UV degradation, and chemical exposure, ensuring long-term durability in outdoor and industrial environments
• Internal Routing Capability: Hollow core allows integration of electrical cables, fiber optic sensors, and pneumatic lines without external modifications

Applications and Use Cases

• Drone and UAV Frame Construction: Use as boom arms and structural supports where the high strength-to-weight ratio enables longer flight times and increased payload capacity while maintaining structural rigidity under dynamic loads
• Robotic Manipulator Segments: Ideal for robotic arm joints and linkages where precision dimensions, low inertia, and high stiffness enable faster acceleration and improved positioning accuracy in industrial automation
• Aerospace Prototype Development: Suitable for aircraft fuselage stiffeners, wing spar components, and control surface reinforcement where weight reduction directly improves fuel efficiency and performance metrics
• Precision Measurement Instruments: Use in laser scanning frames, optical bench supports, and coordinate measurement machine components where dimensional stability and vibration damping characteristics prevent measurement errors
• Racing and Performance Vehicle Construction: Applicable for roll cage components, suspension linkages, and chassis bracing in motorsports where weight savings improve acceleration and handling without compromising safety
• Medical Device Frames: Suitable for surgical robot arms and orthopedic support structures where biocompatibility, lightweight design, and dimensional precision are essential for patient safety

How to Use

Before installation, inspect both tubes for any visible cracks, delamination, or surface damage that could compromise structural integrity. The tubes can be cut to desired lengths using a carbide-tipped saw or specialized composite cutting tools; avoid high-speed grinding which generates excessive heat and may damage the resin matrix. For optimal results, use a fine-tooth saw blade and maintain moderate feed rates to prevent fiber splintering. Deburr cut edges with fine sandpaper to eliminate sharp edges that could damage connecting components or cause injury during handling.

When joining tubes or attaching to other components, use mechanical fastening methods such as aluminum or titanium sleeves with set screws for maximum reliability and load distribution. For adhesive bonding, prepare surfaces with light abrasion using 120-150 grit sandpaper and clean with isopropyl alcohol to remove contaminants; use epoxy adhesives specifically formulated for carbon fiber composites. Avoid drilling directly through the tube walls if possible; if necessary, use carbide drill bits at low speeds with cutting fluid to prevent fiber pullout. For applications involving bending or compression loads, calculate stress distribution using the tube's moment of inertia (approximately 12.27 mm4 for this 5mm OD configuration) to ensure design safety factors exceed 3.0 for critical applications.

Frequently Asked Questions

What is the difference between pultruded and woven carbon fiber tubes?

Pultruded tubes feature unidirectional fiber alignment that maximizes longitudinal strength and stiffness, making them ideal for applications with primarily axial or bending loads. Woven carbon fiber tubes have bidirectional fiber orientation, providing more balanced strength in multiple directions but with lower stiffness along the primary axis. For structural applications like drone arms and robot segments where loads are primarily along the tube length, pultruded tubes deliver superior performance and lower weight. Woven tubes are better suited for applications requiring torsional resistance or multi-directional loading.

Can I cut and join these carbon fiber tubes together?

Yes, pultruded carbon fiber tubes can be cut using carbide-tipped saws or composite cutting tools at moderate speeds to prevent fiber splintering. For joining, use mechanical methods such as aluminum or titanium sleeves with set screws for highest reliability, or epoxy adhesives specifically formulated for carbon fiber composites. Avoid welding or high-temperature joining methods as these damage the resin matrix. For critical load-bearing joints, mechanical fastening with proper stress distribution is recommended over adhesive bonding to ensure consistent long-term performance and ease of disassembly for maintenance.

What is the maximum load capacity of this 5mm carbon fiber tube?

Maximum load capacity depends on application type and safety factor requirements. For axial compression with a 1000mm unsupported length, the tube can support approximately 15-20 kg before buckling occurs, assuming standard epoxy resin and proper end support. For bending loads, the tube can support point loads of 2-3 kg at mid-span without exceeding elastic limits. However, actual capacity varies based on end conditions, load distribution, and required safety factors. For critical aerospace or medical applications, perform finite element analysis or consult engineering calculations specific to your application. Always apply safety factors of at least 3.0 for static loads and 5.0+ for dynamic or cyclic loading conditions.

Is this carbon fiber tube suitable for outdoor and UV exposure?

The epoxy resin matrix provides good UV resistance compared to polyester alternatives, but prolonged direct sunlight exposure will gradually degrade the resin surface over 3-5 years. For outdoor applications, apply UV-protective clear coatings or paint to extend service life to 10+ years. The carbon fiber itself is unaffected by UV radiation; only the resin matrix requires protection. Moisture absorption is minimal with epoxy resin (typically less than 1% by weight), making these tubes suitable for humid environments. Avoid prolonged immersion in saltwater or harsh chemical environments without protective coatings, as these can accelerate resin degradation.

When will I receive my order?

Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.

What is your return and warranty policy?

We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.

Are bulk discounts available?

Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.

Why Buy from The Engineer Store

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Buy Pultruded Carbon Fiber Tube (Hollow) 5mm(OD) * 3mm (ID)* 1000mm (Pack of 2) Online in India

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