Application of cable sheath

With the continuous development of the power industry, the cable in the county power grid construction and transformation has been large-scale promotion. There are usually three methods for laying cable lines: first, laying directly; second, laying cable tunnels; third, laying through pipes. Direct buried laying is characterized by good heat dissipation, simple construction, less investment, but inconvenient maintenance, easy corrosion and external mechanical damage; Although it is convenient to lay cable tunnel, it occupies large underground space and has high cost. With the adoption of pipeline laying, the construction is simple, the investment is low and the maintenance is convenient. It can be embedded in advance to avoid the influence of other underground pipelines on the cable itself. The usage of cable protection pipe is increasing day by day in the construction and reconstruction of power network, but there are many kinds of cable protection pipe with different performance, so the choice of cable protection pipe is more important.

Type of cable protection tube

The main types of cable protection pipe are: organic polymer material cable protection pipe, such as carbon bellows, PVC pipe. Metal cable protection pipe, such as plastic coated steel pipe, galvanized steel pipe, etc. Resin – based fiber – reinforced composite cable protection pipe, such as glass pipe. Cement – based fiber – reinforced composite cable protection pipe, such as low – friction fiber cement pipe, pva cement pipe.

Features of cable pipe protector:

  1. High corrosion resistance. The water absorption rate is below 0.003%. No aging and embrittlement.
  2. Good electrical insulation.

3, high mechanical strength, good pressure.

Caliber range:

Dn15-dn1000 (anticorrosive coating with flange and pressure groove)


Any length up to 6m, 9m.


1, optical cable protection, optical cable through the road and railway canal protection.

2, strong corrosion geological protection pipe.

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