Custom Size Carbon Fiber Tube – Precision Cut & High Strength Composite Tubing

Custom Size Carbon Fiber Tube – Precision Cut & High Strength Composite Tubing

For several years, LIJIN has supplied customers with custom carbon fiber tubes. Depending on the application, sizes have ranged from smaller 6 and 8 inch tubes to ones greater than 40 inches. Our current manufacturing processes allow the fabrication of custom carbon fiber tubes up to 48 inches in diameter. These small and large diameter carbon fiber tubes offer great versatility, both in material selection and layup schedule. Typical reinforcement materials include carbon fiber, fiberglass, and aramid fibers.

In addition, core materials can be added between the high-strength skins, creating a sandwich structure. Many of the materials available for flat plate sandwich cores can also be used when producing sandwich core walls for custom tubes, with the most common examples being honeycomb and thermoformable form. Each custom carbon fiber tube construction method has specific advantages: pure laminate composite tubes result in thin walls that retain the mechanical, thermal, and electrical properties of the fiber, while sandwich core walls provide a lightweight means to increase local wall stiffness.

Given the wide variety of choices available for small and large diameter carbon fiber tubes, the selection of materials and layup schedule often comes from the project requirements. A good example is telescopes, where the low thermal expansion of solid or sandwich core carbon fiber tubes provides substantial improvements over metal tubes, thus offering the astronomer more reliability with temperature change.

Another example is the fabrication of radomes, which often use solid fiberglass or foam-filled fiberglass sandwich construction. A third example is in the creation of high-quality drums, where the material and layup direction can be optimized for both resonances and acoustic damping. One final example is for pressure vessels, which require thicker walls with adequate resistance to the high hoop stresses present in these applications.

Regardless of the application, the engineers at LIJIN would be more than happy to discuss your specific application and how we may be able to help. We look forward to helping you develop a custom carbon fiber tube for your upcoming project’s needs.

Features

• Fully customizable in OD, ID, length, and weave pattern
• High strength-to-weight ratio
• Available in glossy or matte finish, twill or plain weave
• Resistant to corrosion, fatigue, and temperature extremes
• Lightweight yet extremely rigid for structural applications

The first use of carbon fiber in high performance goes back to 1960-1970. It became popular very quickly in every technical area where lightness and strength were primary requirements.

Carbon fiber originates from thermal pyrolysis in a controlled oven where a material called precursor is strongly warmed up at a temperature of about 2000° C in an inert gas atmosphere to produce graphite.

Then other heat treatments modify the final properties of the fibers, for example warming up at temperatures lower than 2000°C gives you a more strength material, whereas with higher temperatures you'll get a more expensive carbon fiber but with a higher Elastic Modulus (Young's modulus).

This is why today there are many kinds of carbon fibers that, even if they're similar, leads to products with different prices and performances.

The carbon fibers previously obtained are lately drowned in epoxy resin (called the matrix) that acts as a binder, allowing the fibers to work together and to distribute the strain uniformly to each one of them.

As you can guess this matrix has a primary role and it has been studied and improved in the last years, like the nanocomposite fillers inside of it.

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.