High Modulus 3K Carbon Fiber Tube – Glossy/Matte Finish, Strong & Lightweight

Carbon fiber tubes have the advantages of high strength, wear resistance, corrosion resistance, and light weight, among others. In addition, the product exhibits a series of excellent properties, including a relatively stable size, high electrical and thermal conductivity, a small coefficient of thermal expansion, self-lubrication, and energy absorption in seismic applications.

• High quality with low factory cost
• Accumulated lots of moldings in stock
• Well-managed production/logistics team with good service

• High strength, fatigue resistance, corrosion resistance
• Electrical and heat conductivity, low coefficient of thermal expansion, energy absorption, and shock resistance.

4 Methods For Producing Carbon Fiber Tubes

After years of accumulation, LIJIN has followed the development of the industry. In order to meet the demands of different customers, LIJIN has continuously upgraded its products and equipment. LIJIN's engineers will formulate production plans according to the customer’s drawings/production costs/delivery time.

1. Roll Wrapping

• Producing round straight tubes with high productivity and low production cost.
• Future is good at 2000mm long and 0.5mm thin & small tubes, with many mandrels in stock.
• We accumulated many carbon fiber tubes and mandrels in 2000mm/3000mm for your wholesale business.
• For large diameter, the ID is up to 500mm ID, in 10meters long.

2. Molding Compression

• Producing shaped and curved tubes, like oval, triangle, square, rec, hex, oct, and curved tubes.
• LIJIN’s engineer will design the lay-up orientation and adopt the right fabric model to meet customers’ requirements.
• The molds in stainless steel can be produced in a short time at a cost-effective price.

3. Filament Winding Processing

What is the carbon fiber filament winding process?

The carbon fiber filament winding process involves the winding machine presetting the program through the computer, and a group of prepreg yarns is accurately prepared on the pre-designed circular mold to form a molding process with a high degree of mechanization of composite products. Each type of mast corresponds to a separate yarn laying program, which precisely winds carbon fibers at different angles, while the yarn tension and other corresponding parameters interact to achieve the required product bending curve. Only the winding process provides a precise angle winding solution of the yarn with preload can solve the huge torsion problem in the movement of the sailboat mast.

Dry Winding

Dry filament wounding involves pre-impregnating carbon fiber bundles in resin and drying them to form pre-preg carbon fiber tows. During the winding process, the pre-preg carbon fiber tows are heated to restore their tackiness and then directly wound onto the mandrel under tension control by the winding machine. Subsequently, curing and demolding are carried out. Since the carbon fiber tows materials are produced in advance, the resin content and fiber content can be precisely controlled. Additionally, the production equipment for dry filament winding has a relatively simple structure and is easy to operate. Therefore, the production efficiency of dry winding is high, the quality is stable, and it is suitable for the production of high-performance carbon fiber tubes.

Wet Winding

Wet filament winding involves passing the prepared carbon fiber yarn through a resin bath for impregnation, then guiding the impregnated carbon fiber bundles onto a mandrel via rollers, and finally curing and demolding. During the production process, it is essential to maintain a constant temperature and pressure in the resin bath and continuously stir it. Resin can also be changed according to different requirements. Depending on the application of carbon fiber tubes, the winding patterns can be classified into three types: helical winding, circumferential winding, and longitudinal winding. By applying these three winding patterns on different winding layers, the comprehensive tensile strength of the carbon fiber tube in both longitudinal and circumferential directions can be enhanced.

4. Autoclave Machine

• Our autoclave machine produces carbon fiber tubes, sheets, and custom parts.
• We produce carbon fiber square tube, rectangle tube, hex tube, oct tube by prepreg carbon fiber fabric in roll wrapped method, the mold cost is much less than the mold pressing method, and the unit price is also low. We have many mandrels in stock. Contact us now to check the list for you.

All the carbon fiber products are made-to-order by customers requirements, for carbon fiber tube and sheet, small trial order is available to start business effectively. CNC machining service is possible for all the carbon fiber products by 3-axis, 4-axis and 5-axis.

What are carbon fiber tubes used for?

Carbon fiber tubes are used in a wide range of applications, including tactical ladders, systems, rods, and beams. Carbon fiber provides low weight, and better mechanical properties over conventional materials like aluminum, and steel.

Are carbon fiber tubes strong?

Carbon fiber tubes are used in numerous applications like tactical ladders, trusses, beams, and more. Carbon fiber is typically chosen over traditional materials such as aluminum, steel, and titanium because of the following properties: High strength and stiffness to weight.

Do carbon fiber tubes bend?

Our carbon fiber tubing is built using a thermoset epoxy resin. This means that once cured the epoxy never returns to a liquid state. If you tried to bend our tubing it would break with enough applied force but it will not bend. Carbon fiber/epoxy composite is very stiff!