Steel Pipes, Pipes Fittings, Socket Fittings manufacturer / supplier in China, offering ASTM A671 Gr. Cc60 Cc65 Cc70 Cl 12 LSAW Welded Pipe, High-Quality En 10297-1 42CrMo4 Qt Seamless Steel Pipe, En 10025-2 S275jr Steel Pipe and so on.