Step and tray cable tray (T, P) type can be widely used for laying cables in petroleum, chemical industry, electric power, light industry, television, telecommunications, coal, etc. They have the features of beautiful shape, simple structure, easy installation (good heat dissipation and air permeability), etc. Cascade type cable tray is suitable for the requirement of the power cable, can also be applied to control the laying of the cable, also may carry on the same layer after using partition cable tray installation power cables and control cables. Cascade, tray cable bridge is the surface treatment is divided into static spray, galvanized, hot-dip zinc and zinc spraying again after four, can be used in different environment, in the heavy corrosion environment should make special anticorrosive processing.
Trough cable tray is a fully enclosed cable tray, which is most suitable for laying computer cables, communication cables, thermocouple cables and other control cables of highly sensitive systems. It has good effect on shielding interference of control cable and protecting cable in heavy corrosion environment. The surface treatment of the trough-type cable bridge can be divided into four kinds: electrostatic spraying, galvanizing, hot dipping zinc and respraying after galvanizing.