Plastic-coated composite pipes are classified as: hot-dip coating process, internal and external spraying process, rotational molding process, spray coating process, absorption coating process, fusion-bonded winding process, etc. The hot-dip coating adopts: fluidized bed coating and one-time film formation method.

Plastic-coated steel pipes have excellent corrosion resistance and relatively low frictional resistance. Plastic-coated steel pipes are a widely used type of pipe material, and they have a wide variety of applications and characteristics.