Xinbo Composites manufactures customized filament wound carbon fiber tubes with an outer diameter up to 500 mm and a length up to 15 meters. The winding angles can be customized according to customer requirements, covering standard modulus, medium modulus, high modulus and ultra-high modulus fiber grades. All tubes are manufactured according to customer drawings, such as tube diameter, winding angle, mechanical strength, fiber grade, and surface finish.
How Does Xinbo’s Filament Winding Process Work?
Filament wound carbon fiber tubes are made of thin carbon fiber yarns wound around a mandrel at specific angles and cured with resin to create a strong, lightweight tube. The process allows precise control over fiber orientation and wall thickness, resulting in tubes with excellent strength-to-weight ratio, stiffness, and torsional performance.
Here is the step-by-step sequence Xinbo’s production team follows on every filament wound order:
- Raw material selection– fiber grade (SM, IM, HM, or UHM) confirmed from the customer’s drawing before production starts
- Mandrel preparation– mandrel sized to the customer’s OD, ID, and length specification
- Resin application– carbon fiber yarn is combined with epoxy resin ready for winding
- Winding– yarn is wound onto the mandrel at the programmed angle; fiber orientation and wall thickness are controlled precisely per the customer’s specification
- Additional layers– extra plies applied where the drawing specifies additional strength requirements
- Cure cycle– tubes are oven-cured in 130~150℃
- Mandrel extraction– the mandrel is removed after full curing
- Surface finishing– raw, polished, glossy clear-coated, or matte clear-coated per customer specification
Video: Filament Winding Carbon Fiber Tube, Xinbo Composites (YouTube)
Filament Wound vs. Roll-Wrapped: What Does Xinbo Recommend?
When OEM customers ask which process suits their application, Xinbo’s engineering team evaluates two factors: the primary load case and the required outer diameter. Filament winding is the process of choice when the tube must carry torsion or combined loads, and when the customer needs to specify the winding angle on the drawing. Roll-wrapped carbon fiber tubes are preferred for axial bending loads and high straightness, where prepreg carbon fiber ply schedules give tight dimensional control.
Process Comparison
| Property | Filament Wound | Roll-Wrapped |
|---|---|---|
| Best load case | Torsion, combined loads | Axial bending, lightweight, high straightness structures |
| Winding angle | Specified per customer drawing | prepreg plys and layup orientations |
| OD range (Xinbo) | Up to 500mm | Standard up to ~500mm |
| Surface finish | Raw / polished / clear-coated | Raw / polished / clear-coated |
| Typical OEM use | Drive shafts, industrial rollers, antenna masts, structural tubes, hydraulic equipment | Drone booms, robotics arms, sporting goods, photography equipment |
Filament winding offers a high-performance, great torsional solution for lightweight and durable structures. The winding angle, set per the customer’s drawing, directly determines tubes’ load-bearing capability.
Which Applications Specify Filament Wound Carbon Fiber Tubes?
Xinbo supplies filament wound carbon fiber tubes to OEM manufacturers across six primary application categories. Winding angle and fiber grade are confirmed per application from the customer’s drawing, not defaulted from a catalogue.
OEM Applications
| Application | OD Range | Fiber Grade | Notes |
|---|---|---|---|
| UAV boom arms and masts | 20–150mm | SM / IM | Winding angle per drawing |
| Industrial drive shafts | 40–150mm | IM / HM | High torsional performance |
| Telescopic antenna masts | 25–200mm | SM/IM | Higher Payloads |
| Robotics structural tubes | 30–200mm | IM/HM | Upon mechanical strengths |
| Inspection and camera poles | 15–60mm | SM / IM | Lightweight and rigid |
| Large diameter structural columns | 80–500mm | SM / IM | Customized according to the required stress |
All filament wound tubes leave Xinbo’s factory with a dimensional inspection report. Mechanical testing, tensile, bending, or torsion, is available on request as a first-article qualification service. View Xinbo’s carbon fiber drone arms and telescopic antenna mast product pages for standard specifications.
What Does Your Drawing Need to Include?
Xinbo’s production team works from customer drawings, not from a standard size list. The more complete the drawing, the faster Xinbo can confirm production feasibility and return a quote. Here is what the team needs to manufacture a filament wound carbon fiber tube to specification:
| Drawing Field | What It Controls |
|---|---|
| OD and wall thickness (mm) | Mandrel sizes |
| Length (mm) | Mandrel tooling and winding program length |
| Winding angle or layup sequence | Axial, torsional, or hoop load balance |
| Fiber grade | SM (230 GPa) / IM (290 GPa) / HM (380 GPa) / UHM (440+ GPa) |
| Surface finish | Raw / polished / glossy clear-coated / matte clear-coated |
| CNC machining | Drilling, cutting, slotting, grinding, and milling holes |
| Assembly | Bonding with metal or plastic fittings |
If the winding angle is not specified on the drawing, Xinbo’s engineering team will recommend the appropriate angle based on the application and confirm with the customer before production begins.
FAQ
What is filament winding in carbon fiber tube manufacturing?
Filament winding winds thin carbon fiber yarns around a mandrel at specific angles and cures them with resin to form a strong, lightweight tube. The process gives precise control over fiber orientation and wall thickness.
What winding angles does Xinbo support?
Xinbo winds tubes at angles according to the customer’s strength requirements. The winding angle is specified on the customer’s drawing and determines how the tube handles its load case.
What is the maximum diameter Xinbo can filament wind?
Xinbo manufactures filament wound carbon fiber tubes up to 500mm in outer diameter and up to 15m in length, across SM, IM, HM, and UHM fiber grades.
How does filament winding compare to roll-wrapping for torsional strength?
Filament winding delivers excellent torsional performance because fiber angle is optimized for the load path per the customer’s drawing. Roll-wrapping is preferred for axial bending applications and lighter-diameter tubes.
Request a Custom Filament Wound Carbon Fiber Tube
Xinbo Composites manufactures filament wound carbon fiber tubes to customer drawings across all diameter ranges, modulus grades, and winding angle requirements. Our ISO 9001-certified factory in Weihai supplies OEM manufacturers in 100+ countries.
If you are developing filament wound carbon tubes for your projects, please share your drawing, including specific ID, OD, Length, CNC processing, tolerances, straightness, fiber grades, and mechanical strengths, and we will provide a solution for you.
