Plastic pipe is generally made of synthetic resin, that is, polyester, adding stabilizer, lubricant, plasticizer, etc., by "plastic" method in the pipe making machine by extrusion processing. Because it has the characteristics of light weight, corrosion resistance, beautiful appearance, no bad odor, easy processing, convenient construction, etc., it has been more and more widely used in construction engineering. It is mainly used as the piping of the tap water supply system, drainage, exhaust and sewage sanitation pipe, underground drainage pipe system, rain pipe and wire installation.

In non-metallic pipes, plastic pipes are the most widely used. There are many types of plastic pipes, which are divided into two categories: thermoplastic pipes and thermoset plastic pipes. Thermoplastic polyvinyl chloride pipe, polyethylene pipe, polypropylene pipe, polyformaldehyde pipe, etc. A thermosetting phenolic plastic pipe, etc. The main advantages of plastic pipe are good corrosion resistance, light weight, convenient molding, easy processing, the disadvantage is low strength, poor heat resistance.