As a professional manufacturer, we are pleased to offer you Pengfa Polyurethane Insulated Spiral Steel Pipe. The 3PE anticorrosive steel pipe represents an advanced technology introduced from abroad in recent years, specializing in corrosion resistance. Its full designation is the fused epoxy/extruded polyethylene structural protective layer, comprising three key layers: the base layer, consisting of fused epoxy (measuring at least 80μm in thickness); the intermediate layer, which is an adhesive layer (ranging from 170μm to 250μm in thickness); and the outermost layer, composed of extruded polyethylene (approximately 2mm in thickness).