There are many types of plastic-coated steel pipes. According to the different positions of the plastic-coated steel pipes, large-caliber plastic-coated steel pipes can be simply divided into internal plastic-coated steel pipes, external plastic-coated steel pipes, and internal and external plastic-coated steel pipes. Each type of plastic-coated steel pipe has its specific application range, but in water supply, many users prefer to use plastic-coated steel pipe inside and outside.

The inner surface of the inner and outer plastic-coated steel pipes is coated with plastic, which can keep the inside of the pipe smooth, reduce the resistance of water flow, and increase the flow of water. In addition, because the water volume is relatively unobstructed, the water flow needs can be guaranteed, and at the same time, there will be no fouling inside the pipe during use, and no bacteria will breed, reducing water pollution.

The outer surface of the inner and outer plastic-coated steel pipes is coated with plastic, which can increase the adaptability of the plastic-coated steel pipes. The coating on the outer surface improves the corrosion resistance of the steel pipe, has strong water resistance, high oxidation resistance, and also has good resistance to solvents. In addition, the impact of the environment on the plastic-coated steel pipe can be reduced. Because the pipeline is inevitably buried in the ground during water supply, the addition of an outer coating can effectively extend the service life of the pipeline.