PRODUCT DESCRIPTION
As part of our full Carbon Fiber Tube product range, the 40mm carbon fiber tube is one of our most requested mid-large diameter profiles, engineered for applications that demand a precise balance of stiffness, low weight, and long-term durability. Every carbon fiber tube 40mm we produce is manufactured in-house using roll-wrapping or filament winding, built on 100% high-strength carbon fiber reinforcement and epoxy resin — not repackaged from third-party stock. For buyers looking for a dependable 40mm industrial carbon tube source rather than a one-off retail purchase, Runway gives you factory-direct pricing, engineering support, and full customization from a single production line.
This 40*37*1000mm carbon fiber tube is typically crafted from high-strength carbon fiber filaments impregnated with epoxy resin, and manufactured via processes like pultrusion or roll-wrapping. Its core material advantages include:
● Ultra-Lightweight: Significantly lighter than steel and aluminum tubes of the same dimensions, reducing overall structural weight without compromising performance.
● High Tensile & Flexural Strength: Capable of withstanding heavy axial loads and bending forces, making it ideal for load-bearing applications.
● Corrosion & Chemical Resistance: Unaffected by moisture, salt spray, or most chemical solvents, suitable for harsh environments like marine engineering and outdoor equipment.
● Low Thermal Expansion: Maintains dimensional stability under extreme temperature changes, avoiding deformation in precision instruments.
● Electromagnetic Compatibility: Carbon fiber is non-conductive, which can shield equipment from electromagnetic interference (EMI) in some cases.
The 40×37×1000 mm dimension makes this carbon fiber tube suitable for a wide array of uses:
● Aerospace & UAVs: Used as drone main frames, wing spars, and satellite support structures, leveraging its lightweight and high-strength characteristics to extend flight time and enhance structural stability.
● Robotics & Automation: Serves as arm links and linear motion guide rails for industrial robots, ensuring fast response speeds and precise movement.
● Sports Equipment: Applied in high-end bicycle forks, fishing rod blanks, and golf club shafts, providing excellent shock absorption and durability.
● Industrial & Construction: Acts as lightweight support beams for inspection equipment, 3D printer frames, and temporary construction scaffolding, reducing installation and transportation costs.
| Parameter | Standard Range | Notes |
| Outer Diameter (OD) | 40mm (±0.2–0.3mm) | Custom OD available on request |
| Inner Diameter (ID) | 36–38mm | Depends on wall thickness selected |
| Wall Thickness | 1–3mm | Thicker wall for higher load applications |
| Standard Length | 500mm / 1000mm / 2000mm | Custom lengths up to 6m in one piece |
| Fiber Orientation | 0°/90° unidirectional, with optional 3K twill/plain woven outer layer | Determines bending vs. hoop strength balance |
| Resin System | Epoxy | High temperature resin options available |
| Surface Finish | Matte or glossy 3K woven | Twill or plain weave cosmetic layer optional |
| Tensile Strength (lengthwise) | 600–700 MPa (typical) | Varies by layup schedule |
| Service Temperature | Up to 100°C | Higher-temp resin systems available for industrial use |
Our 40mm carbon fiber tube is built from alternating layers of unidirectional carbon fiber prepreg — longitudinal layers for lengthwise stiffness, and 90° hoop layers for resistance to crushing, bursting, and torsional load. For cosmetic or higher-visibility applications, we finish the outer layer with a 3K woven (twill or plain) surface, ground and polished for a consistent, high-gloss appearance.
Depending on your application, we manufacture this diameter using either:
● Roll-wrapping — cost-efficient, ideal for standard lengths and moderate-to-high volume orders
● Filament winding — for longer continuous lengths and applications requiring optimized fiber orientation for torsional loading
Both processes are performed on our own production lines in Zibo, Shandong, giving us direct control over wall thickness, layup schedule, and quality consistency across large orders — something a repackaged or trading-company tube cannot guarantee.
Standard sizing works for many projects, but most industrial buyers eventually need something tailored — a specific ID/OD combination, a non-standard wall thickness, a particular surface finish, or a length outside the usual 1–2m range. As a manufacturer rather than a reseller, we support:
● Custom OD/ID and wall thickness combinations
● Custom lengths, including long continuous tubes up to 6m in a single piece
● Custom fiber layup for bending, torsion, or hoop-strength priorities
● Matte, glossy, twill, or plain woven cosmetic finishes
● Cutting, drilling, and end-machining to your assembly requirements
● Small-batch sampling before full production runs
Runway has specialized in large-diameter, long-length carbon fiber composite tubing for over 10 years, supplying B2B buyers who need consistent supply rather than a single retail unit. When you're comparing a 40mm carbon fiber tube manufacturer against retail suppliers, the difference usually comes down to:
● Factory-direct pricing with tiered discounts for wholesale and bulk carbon fiber tube 40mm orders
● Stable batch-to-batch quality control, critical for OEM and assembly-line customers
● Engineering support to help you choose wall thickness, layup, and finish for your load case
● Scalable production capacity, from prototype quantities to container-load orders
● One-piece long tubes, avoiding the joints and weak points of shorter retail lengths spliced together
1. Can the 40mm carbon fiber tube be cut, drilled, or threaded?
Yes, it can be cut and drilled with standard workshop tools. Threading is not recommended directly into the composite — for threaded connections, we can bond a metal insert into the tube end.
2. What is the maximum length available for a 40mm OD carbon fiber round tube?
We can supply continuous one-piece lengths up to 6m for this diameter, well beyond the 1–2m limits typical of retail suppliers.
3. Can wall thickness or ID be customized?
Yes. Wall thickness, ID, layup schedule, and surface finish can all be adjusted to match your load requirements — this is standard for our custom carbon fiber tube 40mm orders.
4. Is this tube suitable for outdoor or marine use?
Yes, standard epoxy carbon fiber tube offers good corrosion and UV resistance; for extended outdoor exposure we can recommend an appropriate coating or resin system.
5. What's the minimum order quantity for wholesale pricing?
MOQ and tiered wholesale pricing depend on your specification — contact our team with your target diameter, length, and quantity for a factory quote.
Whether you need a standard 40mm industrial carbon tube or a fully custom configuration, our engineering team can confirm feasibility and pricing within one business day. Send us your target OD/ID, wall thickness, length, and quantity to get started.
+86 156 9543 6852
Science & Technology Industrial Park, Zhangdian, Zibo, Shangdong, China
