Excellent Electromagnetism Property Round 70MM Carbon Fibre Tube

All carbon fibres we use in carbon fibre tube production are in prepreg form. Prepreg fibres are those that have been pre-impregnated with a resin system. As a matrix, we use epoxy resin with high homogeneous weight. We use different carbon fibre grades for carbon fibre tube production, depending on the desired mechanical properties. We use only high-quality epoxy matrix with a Tg under 100 degrees Celsius and a completely transparent look.

Carbon fiber is made of thin, strong crystalline filaments of carbon that are used to strengthen the material. Carbon fiber can be thinner than a strand of human hair and gets its strength when twisted together like yarn. Then it can be woven together to form cloth and if needed to take a permanent shape, carbon fiber can be laid over a mold and coated in resin or plastic.

On top of being strong, carbon fiber:
● Is high in stiffness
● Is high in tensile strength
● Has a low weight-to-strength ratio
● Is high in chemical resistance
● Is temperature tolerant to excessive heat
● Has low thermal expansion

Because of this, carbon fiber is very popular in many industries such as aerospace, automotive, military, and recreational applications.

With advanced management concept, strong technical strength, and forward-looking thinking, the company has gradually formed a product system with three major plates of pultrusion, hand paste, and carbon fiber, with FRP radome and bus air conditioning shell as the leading products, FRP profiles, carbon fiber profiles and other categories of common development products. The products are widely used in mobile communication, automobile, construction, environmental protection, and rail transit.

Since its establishment, the company has been taking honesty and pragmatism as its purpose, product quality as its life, and customer satisfaction as its pursuit, fully implemented and implemented ISO 9001:2015, established and improved a set of standardized, standardized, and procedural quality management system, products are exported to more than 30 countries, such as Europe and the United States, Southeast Asia, Australia, the Middle East and so on. It is well received by customers.

A Brief History of Carbon Fiber

Carbon fiber dates back to 1879 when Thomas Edison baked cotton threads or bamboo silvers at high temperatures, which carbonized them into an all-carbon fiber filament. By 1958, high-performance carbon fibers were invented just outside of Cleveland, OH. Although they were inefficient, these fibers contained around 20% carbon and had low strength and stiffness properties.

In 1963 a new manufacturing process was developed at a British research center, which is where carbon fiber’s strength potential was realized.

How is Carbon Fiber Made: An Overview of The Carbon Fiber Manufacturing Process

Carbon fiber is made from a process that is part chemical and part mechanical. It starts by drawing long strands of fibers and then heating them to a very high temperature without allowing contact with oxygen to prevent the fibers from burning. This is when carbonization takes place, which is when the atoms inside of the fibers vibrate violently, expelling most of the non-carbon atoms. This leaves a fiber composed of long, tightly interlocked chains of carbon atoms with only a few non-carbon atoms remaining.

Typical sequences used to form carbon fibers from polyacrylonitrile involve spinning, stabilizing, carbonizing, treating the surface, and sizing.

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.