Carbon Steel, Stainless Steel, H Steel manufacturer / supplier in China, offering ASTM Q345 Q235B Ss400 S355jr Marine Steel Angle A36 Series Angle Bar Good Quality A36 Ss400 S275jr 50X50X5 Steel Angle Bar, Straight Seam Welded Pipe Tube ERW Carbon Steel Pipes API 5L X42 X46 X50 X60 Factory Price Straight Seam Welded Tube, API 5L ASTM A53/A106 Gr. B/JIS DIN/A179/A192/A333 X42/X52/X56/X60/65 X70 Stainless/Black/Galvanized/Round Seamless/Welded Carbon Steel Pipe and so on.