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Description
These high-performance pultruded carbon fibre square tubes provide exceptional stiffness and strength in a lightweight profile, making them ideal for precision engineering projects where rigidity and low mass are critical. Manufactured from continuous carbon fibre reinforcement, they deliver reliable, predictable performance with excellent dimensional stability.
Designed for robotics, engineering prototypes, structural frames and high-tech assemblies, these square tubes are available in a choice of external dimensions, wall thicknesses and lengths to suit a wide range of design requirements. Their square profile offers easy integration with flat components and brackets, simplifying construction while maintaining high mechanical performance.
Product Features
- Available external dimensions: 4 x 4 mm, 6 x 6 mm, 8 x 8 mm, 10 x 10 mm and 20 x 20 mm for a range of structural and lightweight applications.
- Wall thickness options of 0.5 mm, 0.75 mm, 1 mm and 1.5 mm to balance strength, stiffness and weight for your specific design.
- Supplied in convenient standard lengths of 1000 mm and 2000 mm, suitable for both compact builds and larger frameworks.
- Smaller sizes (4 x 4 mm and 6 x 6 mm) supplied in packs of 3, and 8 x 8 mm supplied in packs of 2, helping to reduce waste on smaller projects.
- Precision pultruded carbon fibre construction for consistent cross-section, straightness and mechanical properties along the full length of each tube.
- Smooth, clean external surface suitable for bonding, machining, drilling and integration with brackets, joints and fixtures.
- High stiffness-to-weight and strength-to-weight ratios, ideal for replacing heavier metal components in weight-sensitive designs.
Key Features and Benefits
- Lightweight yet highly rigid: Carbon fibre construction significantly reduces overall system weight while maintaining excellent bending stiffness and strength.
- Enhanced structural integrity: Pultruded continuous fibres provide reliable load-bearing performance for frames, arms, gantries and supports.
- Design flexibility: Multiple sizes, wall thicknesses and lengths allow you to optimise components for strength, weight and space constraints.
- Easy to machine and assemble: Can be cut, drilled and bonded using appropriate tools and adhesives for straightforward integration into custom builds.
- Corrosion-resistant and dimensionally stable: Resistant to moisture and many chemicals, maintaining stability and performance in demanding environments.
- Professional finish: Clean, consistent appearance suitable for visible components in display, demonstration and customer-facing equipment.
Specifications
| Specification | Detail |
|---|---|
| External dimensions (mm) | 4 x 4; 6 x 6; 8 x 8; 10 x 10; 20 x 20 |
| Wall thickness options (mm) | 0.5; 0.75; 1; 1.5 (availability may vary by tube size) |
| Available lengths (mm) | 1000; 2000 |
| Pack quantities | 4 x 4 mm: pack of 3; 6 x 6 mm: pack of 3; 8 x 8 mm: pack of 2; 10 x 10 mm and 20 x 20 mm: supplied individually |
| Material | Pultruded carbon fibre composite with high-strength continuous fibre reinforcement |
| Profile shape | Square tube, straight pultruded profile, smooth outer surface |
Applications and Ideal Uses
These carbon fibre square tubes are particularly suited to precision structures where low weight and high rigidity are essential. Their square profile makes alignment and mounting straightforward across a wide variety of projects.
- Robotics arms, linkages, chassis and sensor mounts in lightweight robotic systems.
- Engineering frameworks, gantries and machine structures for test rigs and prototypes.
- Drones, UAV structures and lightweight vehicle components where weight saving is critical.
- Automation, motion control and linear stage supports requiring high stiffness.
- Technical display models, demonstration rigs and educational engineering projects.
Frequently Asked Questions
Can these carbon fibre square tubes be cut to shorter lengths?
Yes, the tubes can be cut to shorter lengths using suitable cutting tools such as a fine-toothed saw or a rotary cutting tool with an appropriate blade. It is recommended to use dust extraction and wear suitable personal protective equipment when cutting carbon fibre.
How should I join or fix these tubes in a structure?
The tubes can be joined using mechanical fasteners in combination with brackets, or bonded using compatible structural adhesives. When drilling, use sharp tools, support the tube to minimise splintering and avoid overtightening fasteners to prevent crushing the tube walls.
Are these carbon fibre tubes suitable for outdoor or damp environments?
Carbon fibre composite is generally resistant to moisture and many environmental factors, making these tubes suitable for most outdoor and damp environments. For long-term exposure, especially in harsh conditions, it is good practice to protect any cut edges and ensure that bonded or mechanical joints are also suitably protected.