Super Light High Stiffness CFRP Carbon Fiber Reinforced Polymer Tube

Super Light & High Stiffness CFRP (Carbon Fiber Reinforced Polymer) Tube

LIJIN is able to provide an extensive range of high-performance, lightweight composite tubing for use in a wide variety of industries and applications. Our assortment of composite tubes are manufactured through roll wrapping, pultrusion, or filament winding processes in the most popular composite materials such as carbon fiber, fiberglass. Available in standard and custom sizes, our lightweight, composite tubes exhibit outstanding strength, durability and rigidity. They deliver excellent tensile strength characteristics compared to conventional structural metals and are a first choice in a variety of performance applications.

Due to their unique properties, carbon fiber tubes are used in numerous applications over traditional materials such as aluminum, steel, and titanium.

• High strength and stiffness with low weight
• Excellent fatigue resistance
• Dimensional stability: Low to Zero CTE (Coefficient of Thermal Expansion)

Our Carbon Fiber Reinforced Polymer (CFRP) structural tubes have the following advantages over tubes offered by our competitors:

1. Optimized for Maximum Strength-to-Weight Ratios. We have optimized the designs of our CFRP structural tubes for maximum strength-to-weight ratios. Unlike tubes offered by our competitors, our structural tubes contain no decorative plies or coatings: every fiber and gram of our tubes contributes to structural strength. Our tubes contain mostly 0˚ (axially aligned) plies, with one 90˚ ply near the inside diameter and a second 90˚ ply near the outside diameter, to provide hoop stability.

2. Optimized for Maximum Bond Strength. Our competitors sell tubes with 90˚ plies on the Inside Diameter (ID) and on the Outside Diameter (OD); however, adhesive bonds have greatest strength when the parts have fibers axially aligned on the bonded surfaces. Our CFRP structural tubes have fibers axially aligned on the ID and the OD, to maximize bond strength.

3. No Stress Concentrations. Our competitors consolidate tubes with heat-sensitive “shrink tape.” Shrink tape leaves helical grooves around the tube ODs, which provide stress concentrations that limit the bending, tensile, and compressive strengths of our competitors’ structural tubes. On the other hand, our proprietary manufacturing process produces no stress concentrations in the hoop direction, so the structural strengths of our tubes are not limited by stress concentrations.

4. Lowest Prices in the Industry. Our proprietary manufacturing process not only produces superior CFRP structural tubes, but our proprietary manufacturing process also enables us to produce tubes at lower costs than our competitors, so we can offer CFRP structural tubes for the lowest prices in the industry.

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!

Shanghai Lijin focuses on the Carbon Fiber industry and offers carbon fiber tubes, plates, and aluminum CNC services.

Being experienced in the carbon fiber applications for over 7 years, Shanghai Lijin manages customized production according to various industry standards. Shanghai Lijin started to keep in stock for some standard

sized and frequently ordered tubes and plates. This enables Shanghai Lijin to make prompt delivery. Not only

can Shanghai Lijin complete mass production orders in short period, we can even ship normal sample, prototype orders of Carbon Fiber Plate CNC parts in just SEVEN days after order confirmation when the

drawings are available. Shanghai Lijin is dedicated to solve any technical points during the production and new item developing to ensure the quality.

Carbon Fiber tube production is Shanghai Lijin’s core business and occupies 70% of our turnover.
The carbon fiber tubes Shanghai Lijin mainly produce is table-rolled and oven thermoset. The tubes can be Full Carbon or Carbon Fiber and Fiberglass composite, depending on the application, weight limit,mechanical

strength and surface requirement.Shanghai Lijin offers top quality ROUND carbon fiber tubes. The general OD tolerance we achieve is +/-0.10mm and it can be even +/-0.05mm after our special surface process.

The maximum length of the tube can be 5500mm.

Besides the traditional table-rolled carbon fiber tubes, Shanghai Lijin also offers REAL Filament wound carbon fiber tubes,which are widely used for mechanical strength like auto driving shaft, antennas, even for military

applications. The filament wound carbon tubes are wound at a certain angle like 30 or 45 degree. We invested the new production line from Jun 2013 and this increases Shanghai Lijin’s advantage in the carbon

fiber tube industry. There are just a few real filament wound carbon fiber tube manufacturers in domestic

China and we are one of them.

Since the rapid growth of UAV in the international market, instead of the standard plane like Phantom from DJI, RC fans are getting more interested in the customized multicopters. As carbon fiber is the most preferred

material for UAV, Carbon Fiber CNC parts demand is increasing. Shanghai Lijin sticks to offering OEM service for the international market, fine quality and prompt delivery.To ensure the thickness tolerance +/-0.10mm and minimum warp of the Carbon Fiber plates that are used for the cutting, Shanghai lijin execute high standard to

the plate production. For the normal thicknesses including 1.0mm, 1.2mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm,
Shanghai Lijin keeps regular stock, to make sure the raw material will be available for cutting immediately when order is firmed.Experienced engineers are in Shanghai Lijin’s office ready to deal with different types of

drawings from customers. No matter the drawing formats are .DWG, .DXF that can be edited by AutoCAD

and used directly for production, 3D drawings like .IGS, or even draft drawings, our staff can do adjustment and change to customer’s idea. Our engineers are also good at English communication, Email and IM is easy

for them. Editing drawings for customers is FREE* of charge. Shanghai Lijin is having several professional CNC machines for carbon fiber cutting and drilling, with the capacity of cutting 20-50pcs standard full sized plate per day. The carbon fiber chassis general cutting tolerance Shanghai Lijin offer is +/-0.02mm. The

special designed cutting solution ensures the smoothness of the cutting edge.

‘Customers’ Persuit for Change, Lijin’s Motivation for Growth’, Shanghai Lijin takes customers’ demand for center, enhances the
customer satisfaction, and grows with customer.