Pultruded Carbon Fiber Tube (Hollow) 20mm(OD) * 16mm(ID) * 1000mm(L)

This pultruded carbon fiber hollow tube is a high-strength, lightweight structural component manufactured through continuous pultrusion process, delivering consistent fiber-to-resin ratios and superior mechanical properties. Professional engineers, drone manufacturers, aerospace technicians, and robotics developers rely on these tubes for applications requiring exceptional strength-to-weight ratios and dimensional precision. It solves the critical engineering challenge of reducing structural weight while maintaining rigidity and load-bearing capacity in precision applications.

Product Overview

Pultruded carbon fiber tubes are manufactured by pulling continuous carbon fiber strands through a heated resin bath and die cavity, creating a uniform cross-section with excellent fiber alignment along the longitudinal axis. This manufacturing process ensures minimal voids, consistent wall thickness of 2mm, and superior tensile strength compared to hand-laid or filament-wound alternatives. The hollow design with 20mm outer diameter and 16mm inner diameter provides optimal moment of inertia for bending applications while minimizing material usage and cost.

The 1000mm length offers versatility for direct application or custom cutting for specific projects. Carbon fiber pultruded tubes exhibit exceptional stiffness (modulus of elasticity approximately 120-140 GPa), corrosion resistance in harsh environments, and thermal stability across wide temperature ranges. Unlike aluminum tubes of equivalent dimensions, this carbon fiber variant weighs approximately 70% less while providing superior fatigue resistance and damping characteristics, making it ideal for vibration-sensitive applications in precision instrumentation and aerospace structures.

Key Specifications

Key Features

• Consistent Wall Thickness: Precision pultrusion process ensures uniform 2mm wall thickness throughout the 1000mm length, eliminating weak points and ensuring predictable load distribution in structural applications
• Exceptional Strength-to-Weight Ratio: Carbon fiber construction delivers tensile strength of 600-700 MPa at only 98-105 grams per meter, reducing overall system mass by 70% compared to aluminum alternatives
• Superior Stiffness and Rigidity: Tensile modulus of 120-140 GPa provides excellent resistance to bending and deflection, critical for precision robotic arms, drone frames, and optical mounting systems
• Corrosion and Chemical Resistance: Epoxy resin matrix resists moisture absorption, saltwater corrosion, and chemical exposure, making it suitable for marine, industrial, and outdoor applications without protective coatings
• Excellent Damping Characteristics: Carbon fiber's inherent vibration absorption reduces resonance and oscillation, improving precision in measurement equipment and reducing vibration transmission in sensitive assemblies
• Thermal Stability: Maintains structural integrity across temperature ranges from -40°C to +80°C without significant property degradation, suitable for aerospace and outdoor environmental conditions

Applications and Use Cases

• Drone and UAV Frames: Use as boom arms, landing gear supports, and structural reinforcement in quadcopter and fixed-wing aircraft designs where weight reduction directly increases flight time and payload capacity
• Robotic Arm Construction: Ideal for articulated robot joints and extension arms where the high stiffness-to-weight ratio enables faster acceleration, reduced motor load, and improved positioning accuracy in industrial automation
• Aerospace and Aviation Components: Utilized in aircraft interior structures, antenna booms, sensor mounting brackets, and experimental aircraft frames where weight savings are critical for fuel efficiency and performance
• Precision Instrumentation Mounts: Perfect for optical bench frames, telescope mounts, and laboratory equipment structures where vibration damping and dimensional stability are essential for measurement accuracy
• Automotive Racing Applications: Used in roll cages, suspension components, and chassis reinforcement in high-performance racing vehicles where reduced unsprung weight improves handling and acceleration
• Marine and Offshore Structures: Suitable for boat mast sections, underwater sensor housings, and subsea equipment frames where corrosion resistance and lightweight construction provide operational advantages

How to Use

Before installation, inspect the carbon fiber tube for any surface cracks, delamination, or manufacturing defects. Clean the tube with a soft cloth to remove dust and contaminants. For structural applications, calculate the moment of inertia (approximately 628 mm4 for this 20mm OD configuration) to ensure the tube meets your load requirements. If cutting is necessary, use a fine-toothed carbide or diamond blade with coolant to prevent fiber fraying and matrix cracking. Cut slowly at low speeds to minimize heat generation and material damage.

For joining, use mechanical fasteners (bolts with washers) through drilled holes, or epoxy adhesive designed for carbon fiber bonding. Avoid stress concentrations by using large-diameter washers and ensuring holes are drilled perpendicular to the tube axis. For applications involving bending moments, support the tube at appropriate intervals based on load calculations to prevent buckling. Do not exceed the recommended tensile stress of 600-700 MPa or apply sudden impact loads. For thermal applications, verify the resin system's temperature rating before exposing to extreme conditions. Store in a dry environment away from direct sunlight to prevent UV degradation of the epoxy matrix.

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