With the rapid development of underground laying of power cables and the higher requirements for cable protection, the cable protection sleeves are made of polyethylene PE and high-quality steel pipes after blasting, shot blasting or painting, Crafted It is the most commonly used electrical wire and cable insulation to protect the tube. Because of its good insulation properties, high chemical stability, no rust, no aging, can adapt to harsh environments and has been widely applied.

　　The use of cable protection casing to protect the cable can achieve the following advantages: 1, good corrosion resistance, long life, can be used in wet saline zone. 2, flame retardant, good heat resistance, long-term use at 130 degrees without deformation, in case of fire does not burn. 3, high strength, high rigidity. Used in the road under the direct buried without adding concrete protective coating, roller roller cable construction progress. 4, cable protection tube either pipe or tube has a certain flexibility, can withstand the pressure caused by the outside world and the destruction caused by the foundation settlement. 5, with good resistance to external signal interference. 6, the inner wall is smooth, do not scratch the cable. Design using socket-type connection, easy to install and connect. Rubber joints at the joints sealed both adapt to thermal expansion and contraction, but also to prevent the sand into.