HebeiHuahengPipelineEquipmentManufacturingCo.,Ltd.-Plastic-Coated Steel Pipes for Water Supply and Drainage,Firefighting Plastic-Coated Steel Pipes,Spiral Welded Steel Pipe,Hot-Dip Plastic-Coated Electrical Conduit,TPEP (Three-Layer Polyethylene Extruded) Anti-Corrosion Steel Pipe,3PE (Three-Layer Polyethylene) Anti-Corrosion Steel Pipe ,IPN8710 Epoxy Resin Anti-Corrosion Steel Pipe ,Plastic-Coated Steel Pipe ,Polyurethane Insulated Pipe ,Thermal Insulated Pipe,Steel-Sleeved Steam Insulated Steel Pipe ,Elbow,Flange,Tee,Compensator,Waterproof Sleeve