Plastic lined pipe is a kind of steel pipe which lined the quality plastic against the inner wall of the steel pipe. By the ordinary steel material as the steel pipe, and excellent plastic with abrasive resistance, anticorrosion, heat-resistance and so on as a lining layer, we combine the characteristics of metal and plastic together, into the characteristics with high strength, high abrasive resistance, high anticorrosion and high heat-resistance. Therefore it can be widely used for the pipeline system of industrial deslagging, exhaust in metallurgy, mining, electric undertaking, chemical industry and so on.