Seamless Steel Pipe, Steel Pipe, Steel Tube manufacturer / supplier in China, offering API 5L Gr B X42 X46 X52 X56 X60 X65 X70 Psl-1/Psl-2 Carbon Steel Pipes/Tubes, ASTM A29/A29m SAE4130 Cold Drawn Precision Seamless Steel Pipe for Automotive Components, A335 P22 Alloy Steel Seamless Pipes/Alloy Steel Seamless Tubes and so on.