Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering ASTM 790 ASME 36.19m 1/2'' 11/2'' 3'' 4'' 5'' 6'' Steel Pipe, Non Alloy Pressure Pipe for Low Temperature Marine Service ISO 9329 Standards, High Strength Carbon Steel Pressure Tube ISO 9329 Certified for Vessel Overhaul and so on.