A new generation of cable protection sleeve -COD tube (corrugated cable duct) is polyethylene as raw material, the structure with low coefficient of friction ridge wall tube or pipe silicon core pipe for the child, to high pressure, flexible bellows for mother tube, made by composite extrusion. Its overall performance is ever the cable sheathing unmatched. COD pipe with its excellent physical and chemical properties, the perfect structure, low cost, easy construction of the advantages of choice for a variety of terrain cable sheathing tube. And gradually replace the traditional trend of the original cable jacket tube. COD tube has the following advantages: practical; good security; inner tube (sub-pipe) and easy to distinguish; bending excellent; simple installation; External Pressure; various combinations of sub-tube; prevent distortion child tube. Products COD pipe production line is LONGCHANG Czech machinery developed its own in recent years, and the first in China to launch new products, with high yield, simple process, high degree of automation, easy to operate, to fill the gap, the leading domestic level. LONGCHANG Czech brand COD pipe production line speeds up to 1.5m / min, the length of each finished dish up to 500 meters. Technology to catch up with the advanced world level has been! COD corrugated cable conduit Corrugated Optic Duct English abbreviation. This is summed up in the past, a variety of cable, cable ducts of the pros and cons on the basis of new ideas from the development of a new generation of high-performance fiber optic catheter. It uses a very low coefficient of friction modified HDPE as the main raw material, the structure is very low coefficient of friction ridge pipe wall pipe for the child, to high pressure, flexible bellows for the main pipe, made by composite extrusion. It is with high pressure, can be bent, there is distinction, easy construction of the main features, with many other products can not match advantage in terms of physical performance, life, construction and so on. Features compression COD products are special spiral shape, it enhances the compressive strength of the traditional PE straight tube, whose compressive strength is several times the traditional tube, improves the effectiveness and flexibility, the occurrence of an earthquake, collapsed, etc., can be ensure safety. Chemical resistance, durability and strong acid and alkali ability, better water resistance, laying in the water and wetlands, corrosion resistant, is a semi-permanent pipeline. Reliability because the material is not conductive, high insulation, is the ideal cable ducts. Another appearance of thermal expansion and contraction rather than conventional catheter systems, and as a result of internal, like the appearance of the raw material, and always maintain the same ratio. Because COD tube (per 500 m) in coiled tube rack, it is possible to reduce the considerable amount of labor costs, the most important thing is, COD does not require the insertion of the inner tube, the inner tube has been varied since the equipment inside the outer tube. Because of the lighter gravity (0.95: 1.43), COD fairly light, and traditional tube than for construction and transportation is very convenient. Because thread processing, COD can bend freely, bending force can reach 90 degrees, and even larger angle, does not require any special tools to bend or straighten. At the construction site can bypass an obstacle. Since the inner tube of the one-line design and good low coefficient of friction, there is no connection, the problem of non-kinking wire particularly convenient, but also extend the distance between holes. The tube is completely airtight, resistant to high internal pressure, you can use the cable gas Rafah. In the case of the same outer diameter of the tube can be much more inner tube, increased use efficiency. Most importantly, COD can be introduced up to 75% of the diameter of the inner tube diameter of the cable, while the conventional tube can only import 50%. Applications cable, cable protection tube