What is the material of spray plastic cable tray？

First, we should first find out what is meant by spray-plastic bridge, and before that, we have to answer two questions: the difference between spray-plastic bridge and fire-proof bridge? 
What is the difference between sprayed bridge and galvanized bridge? 
The main contents are as follows: 1. The difference between spray plastic bridge and fireproof bridge plastic spray cable bridge is a surface treatment method of spraying plastic powder on cable tray. 
No thinning material, no pollution to the environment and no toxicity to the human body; excellent appearance quality of the coating, strong adhesion and mechanical strength; short curing time in spraying construction; much higher corrosion and wear resistance of the coating; no primer; simple construction; low technical requirements for workers; the cost is lower than the painting process; in some construction occasions, it has been clearly proposed that the electrostatic plastic spraying process must be used. 
The common phenomenon of flow in the painting process will not occur in the process of electrostatic powder spraying. 
The fireproof bridge is mainly composed of fireproof board composed of glass fiber reinforced material and inorganic adhesive composite with metal skeleton and other fireproof substrates. 
With fireproof coating on the outer layer, the fireproof bridge will not burn after the fire, so as to prevent the spread of the fire, has an extremely good effect of fire prevention and fire resistance, but also has fire resistance, oil resistance, corrosion resistance, non-toxic, no pollution, convenient overall installation, reasonable structure, long service life, and beautiful, the cable is installed in the cable tray, the environment is clean and the cleaning is convenient. 
Fire retardant coating has the characteristics of thin coating, high fire resistance and strong adhesion. 
Fireproof coating is by brushing the coating on the surface of the material, it can improve the fire resistance of the material, slow down the spread of flame, or prevent combustion in a certain period of time. This kind of coating is called fireproof coating, or flame retardant coating. 
2, the difference between spray bridge and galvanized bridge first of all, galvanized bridge and spray bridge belong to metal cable bridge, galvanized bridge is made of galvanized steel, galvanized plate does not need too much explanation, and spray bridge is to use galvanized bridge to process a layer of electrostatic spray coating on the surface, so it is called spray plastic bridge, it is simply understood that plastic spray bridge is an upgraded version of galvanized bridge and has stronger anti-corrosion performance. 
Second, introduce the national standard of spraying bridge again. 
The thickness of the spray powder shall be > = 60um in accordance with the above JB/T 10216-2013 specification. 
Spray bridge generally uses cold-rolled steel plate as plate, generally electrogalvanized or hot-dip galvanized surface treatment, followed by thermosetting powder electrostatic spraying.