Plastic-lined steel pipe, based on galvanized seamless steel pipe or welded steel pipe, with the inner wall de-burred, a food-grade polyethylene (PE) pipe of the same diameter as the galvanized pipe is inserted. The thickness of the polyethylene lining must meet the standard HG/T 20538-2016. After a certain period of pressure and heating, it is shaped into a product that is an upgraded version of the traditional galvanized pipe.
