Plastic-lined steel pipe, based on galvanized seamless steel pipe and welded steel pipe, after removing the weld rib from the inner wall, food-grade polyethylene (PE) pipe with the same diameter as the galvanized pipe is lined inside. The thickness of the polyethylene lining must meet the standard of HG/T 20538-2016. It is formed after a certain period of time under pressure and heat, representing an upgraded version of the traditional galvanized pipe.
