We know what steel pipe is, and PVC casing is a white opaque threading pipe made of polyvinyl chloride and flame retardant material. It is suitable for threading in walls, such as wires, audio cables, video cables, telephone lines, etc. So what are the characteristics compared with steel pipes? Let me introduce you now. 
1, strong pressure resistance: PVC casing can withstand strong pressure, can be applied or darkly applied to the concrete, do not worry about compression and rupture. 
2, corrosion-resistant, insect-proof: PVC casing has acid and alkali resistance, while the tube does not contain plasticizer, so there is no pest. 
3, good flame retardancy: PVC casing burned away on the flame, can quickly rest, can avoid the spread of fire. 
4, strong insulation performance: PVC casing can withstand high electricity without being broken down, can effectively avoid leakage, electric shock accidents. 
5. Convenient construction: PVC casing is light in weight, only 1/5 of steel pipe; and it is easy to bend, insert a section of bending spring into the pipe, which can be artificially bent at room temperature. 
6. Saving investment: Compared with steel pipe, the cost of materials and construction and installation costs can be greatly reduced. 

   2021-12-09