PRODUCT DESCRIPTION
Runway manufactures large carbon fiber tubes for industrial and engineering applications where conventional aluminum or steel tubing adds unnecessary weight or cannot provide the required combination of stiffness, corrosion resistance, and dimensional stability.
With more than 10 years of experience in large-diameter and long-length composite tubing, Runway can manufacture carbon fiber tubeswith diameters ranging from 6 mm to 500 mm and continuous lengths of up to 6 meters (20 ft) in one piece.
OD, ID, wall thickness, length, reinforcement structure, and surface finish can be customized according to your application. Whether you need a standard large diameter carbon tube or a completely custom diameter carbon tube, our technical team can review your drawings, loading conditions, and dimensional requirements before production.
(1) Strengthening material for C/C compound material.
(2) Filtration material under high temperature and for caustic liquid.
(3) Electric conduct material, electrode.
(4) Static electricity resistance.
Increasing the diameter of a structural tube can improve section stiffness, but with metal tubing it can also add considerable weight.
Carbon fiber composite construction allows engineers to use larger tube diameters while keeping structural weight under control.
Carbon fiber offers high stiffness relative to its weight, making large tubes suitable for moving structures, long-span components, and other weight-sensitive assemblies.
An appropriately designed carbon fiber tube can help reduce component mass compared with conventional metal structures while maintaining the required stiffness.
Carbon fiber composite tubes do not rust like conventional steel, making them suitable for equipment exposed to moisture and demanding operating environments.
Unlike isotropic metals, composite laminates can be engineered with fiber orientations selected according to bending, torsional, axial, or hoop loads.
| Parameter | Runway Capability | Customization |
| Tube Shape | Round Tube | Other composite profiles can be discussed |
| Diameter | 6–500 mm | Custom OD and ID |
| Length | Up to 6 m / 20 ft | Custom cut lengths available |
| Wall Thickness | Custom | Based on diameter and load requirements |
| Carbon Fiber | T300, T700 and other grades available | Selected according to stiffness and strength requirements |
| Reinforcement | Carbon Fiber, Fiberglass, Aramid, Hybrid | Application-specific reinforcement available |
| Manufacturing Process | Roll Wrapping, Filament Winding | Selected according to tube structure and load |
| Surface Finish | Matte, Glossy, Woven Appearance | Custom finish available |
| Dimensional Tolerance | Drawing-Based | Critical OD or ID tolerance can be specified |
Final specifications depend on tube diameter, wall construction, tooling, material system, and performance requirements. Please provide your drawing for engineering confirmation.
Manufacturing a large carbon fiber tube involves more than simply increasing the size of a standard tube.
As tube diameter and length increase, laminate structure, fiber orientation, dimensional consistency, curing, and tooling become increasingly important.
Runway selects the manufacturing process according to tube geometry, loading conditions, quantity, and dimensional requirements.
Roll wrapping allows multiple prepreg layers and different fiber orientations to be combined within the tube wall.
This process is suitable for applications where longitudinal stiffness, laminate construction, dimensional requirements, and exterior finish need to be carefully controlled.
Filament winding enables continuous fibers to be placed around the tube at controlled winding angles.
It is particularly suitable when circumferential strength, torsional performance, or application-specific fiber orientation is important.
Runway also has broader composite manufacturing capabilities, including pultrusion, allowing our team to select the manufacturing method according to the component rather than forcing every project into the same production process.
Large composite tubes are often designed around existing bearings, sleeves, inserts, housings, clamps, collars, or other mechanical components.
For this reason, Runway does not limit customers to a small range of fixed tube dimensions.
For a custom diameter carbon tube, we can review and customize:
● Outside diameter (OD)
● Inside diameter (ID)
● Wall thickness
● Overall tube length
● Carbon fiber grade
● Reinforcement material
● Fiber orientation
● Laminate structure
● Matte or glossy surface
● Woven carbon fiber appearance
● Cutting requirements
● Secondary machining requirements
● Prototype and production quantities
If you already have an engineering drawing, send it to Runway for evaluation. If the design is still being developed, our technical team can discuss the required dimensions, load conditions, and manufacturing feasibility with you.
A nominal tube diameter is often not sufficient when the carbon fiber tube must interface with bearings, bonded inserts, clamps, collars, sleeves, or machined components.
For a precision diameter carbon tube, it is important to identify whether the outside diameter, inside diameter, or both dimensions are critical to the assembly.
Runway reviews dimensional requirements together with:
● Tube diameter
● Tube length
● Wall thickness
● Laminate construction
● Manufacturing process
● Mating components
● Assembly method
● Critical tolerances
This allows the appropriate manufacturing and finishing approach to be evaluated before tooling and production.
If the tube slides inside another component, OD is usually one of the most important dimensions. If an insert or mechanical component fits inside the tube, ID control may be more important.
We recommend marking all critical dimensions and tolerances directly on your engineering drawing.
Large diameter carbon fiber tubing is particularly useful when engineers require a large structural section without the corresponding weight of a large metal tube.
Typical applications include:
Large carbon fiber tubes can be used for robot arms, moving beams, automation structures, and other components where reducing moving mass can improve system performance.
Their high stiffness-to-weight ratio makes carbon fiber tubes suitable for lightweight structural components and weight-sensitive aerospace assemblies.
Large diameter CFRP tubes can be used for structural supports, rollers, machine components, beams, and equipment requiring a combination of low weight and stiffness.
Long lightweight tubes are suitable for inspection equipment, positioning structures, and extended-reach systems where excessive structural weight would make operation difficult.
Custom and precision diameter carbon tubes can beused where the tube must integrate with mechanical components while maintaining low weight and dimensional stability.
Runway works with OEM customers to manufacture application-specific large carbon fiber tubes according to drawings, dimensions, performance requirements, and production quantities.
Runwayhas more than a decade of experience manufacturing large-diameter and long-length carbon fiber composite tubes for industrial customers.
Our manufacturing capability covers carbon fiber tubes from small diameters up to 500 mm, allowing us to support projects beyond conventional small CFRP tubing.
Runway can manufacture continuous carbon fiber tubes up to 6 meters / 20 feet in one piece, depending on the required tube structure and manufacturing process.
Long one-piece tubes can reduce the need for joints and simplify large structural assemblies.
Our capabilities include:
● Roll wrapping
● Filament winding
● Pultrusion
The manufacturing process can therefore be selected according to the structural and dimensional requirements of the project.
In addition to carbon fiber, Runway works with fiberglass, aramid fiber, and hybrid reinforcement systems.
This provides more flexibility when balancing stiffness, strength, impact performance, weight, and project cost.
We do not treat OD, ID, wall thickness, and length as isolated specifications.
These dimensions are reviewed together with loading conditions, laminate design, material selection, and production process to develop a more appropriate tube solution.
Runway supports custom composite projects from initial drawing evaluation and prototype development through repeat production.
Runway supplies composite products to customers in international markets including North America, South America, Oceania, the Middle East, and Europe.
What is the maximum diameter of Runway's large carbon fiber tubes?
Runway can manufacture carbon fiber tubes with diameters ranging from approximately 6 mm to 500 mm. For large custom diameters, tooling, wall structure, tube length, and order quantity should be reviewed before production.
How long can a large diameter carbon tube be manufactured?
Runway can manufacture continuous carbon fiber tubes up to 6 meters, approximately 20 feet, in one piece, depending on the tube specification and manufacturing process.
Can you manufacture a custom diameter carbon tube?
Yes. OD, ID, wall thickness, and length can be customized. Send Runway your drawing or target dimensions so our team can evaluate tooling and manufacturing feasibility.
Can Runway control OD or ID for precision assemblies?
Yes. Dimensional requirements can be reviewed for precision applications. Achievable tolerances depend on tube diameter, length, wall construction, laminate, and manufacturing process, so critical tolerances should be clearly specified on your drawing.
What is the difference between roll-wrapped and filament wound carbon fiber tubes?
Roll wrapping is suitable for tubes requiring controlled laminate layers, fiber orientations, and longitudinal stiffness. Filament winding enables continuous fibers to be placed at controlled winding angles and is useful when circumferential strength or torsional performance is important.
The appropriate process depends on the structural requirements of the application.
Can the fiber layup of a large carbon fiber tube be customized?
Yes. Fiber orientation and laminate construction can be adjusted according to requirements for bending stiffness, torsional resistance, hoop strength, axial strength, and overall tube weight.
Can Runway manufacture long carbon fiber tubes without joints?
Yes. Depending on the specification, Runway can manufacture one-piece carbon fiber tubes up to 6 meters long, helping reduce joints in long structural assemblies.
What information should I provide before requesting a quote?
Please provide OD, ID or wall thickness, tube length, quantity, critical tolerances, application, loading conditions, surface requirements, and an engineering drawing if available.
Contact Runway today to discuss your custom carbon fiber tube requirements and request a quotation.
Small Diameter Carbon Fiber Tube
Small diameter carbon fiber tubes deliver superior strength and rigidity in a compact, lightweight form. Perfect for UAVs, robotics, and precision engineering, these tubes provide excellent tensile strength, impact resistance, and durability, ensuring high-performance results in tight spaces.+86 156 9543 6852
Science & Technology Industrial Park, Zhangdian, Zibo, Shangdong, China
