Carbon Steel, Stainless Steel, H Steel manufacturer / supplier in China, offering API 5L Seamless Steel Pipe Galvanized/Stainlesss/Ms Alloy Large Diameter Thick Wall Sch40 Sch80 Seamless Fluid Fire Boiler Tube Pipe, A106/A53 Gr. B A179/A192 X42 X52 St37 St52 API 5L Seamless Steel Pipe (Pipeline Pipe), A36 Q235 Q275 En 10025-2 S275jr C Type Channel U Shape Steel Profile Construction Mild Steel C Channels and so on.