2022 Latest Design Nm400 Steel - Theoretical Knowledge of Lined Plastic Galvanized Pipe – XINXIN PENGYUAN

Plastic lined steel pipe, also known as steel plastic composite pipe,  takes galvanized seamless steel pipe and welded steel pipe as the base pipe. After removing the welding reinforcement on the inner wall, it is lined with food grade polyethylene (PE) pipe with the same diameter as the galvanized pipe. The thickness of the polyethylene lining is required to meet the cj/ t136-2007 standard. It is formed after being pressurized and heated for a certain time. It is an upgraded product of traditional galvanized pipe.

It is directly related to the production cost and production efficiency of products, and in turn puts forward technological requirements for the structural design of products and the selection of materials. The embedded plastic lined steel pipe with inner reinforcement adopts the mechanical drawing composite process of * to compress the inner plastic pipe by reducing the diameter of the metal pipe, so that the two materials produce * reasonable interference. In addition, the embedded effect of the patterned inner reinforcement on the outer surface of the plastic pipe designed by the inner surface of the welded pipe * and the physical and chemical modification before the compound of the plastic pipe make the embedded plastic lined steel pipe with inner reinforcement have the technical characteristics of no layering, no shrinkage and guaranteed long-term use. And won the national utility model in 2001. This process has high production efficiency, easy process control and high composite quality.