Seamless Steel Pipe, Boiler Tube, Alloy Steel Pipe manufacturer / supplier in China, offering X56 X65 S235jr S275jr S355jr 3PE Fbe Anti-Corrosion Coating Steel Tube, API 5L Psl1/2/ASTM A53/A106 Gr. B/JIS DIN/A179/A192/A333 X42/X52/X56/X60/65 X70 Stainless/Black/Galvanized/Round Seamless/Welded X52 Carbon Steel Pipe, En 10025-2 S235jr /S275jr/S355jr S235j0/S275j0/S355j0 Hot Rolled Structural Steel Plate and so on.