Roofing Sheet, Galvanized Steel, Galvalume Steel manufacturer / supplier in China, offering S275/S355 Plastic Coated Steel Pipes with Anti-Corrosive Coating for Road Auxiliary Facilities and Structural Applications., X52/X60 Plastic-Coated Composite Steel Pipes with Smooth Ep Lining for High-Efficiency Oil and Gas Pipeline Engineering., A53 Gr. B Plastic Coated Steel Tubes with PE Lining for Mechanical Industry and Electric Power Transmission Tower Systems and so on.