Steel Pipes, Pipes Fittings, Socket Fittings manufacturer / supplier in China, offering Durable 42CrMo4 Carbon Steel Tube for Industrial Applications, OEM ASTM A106 Grb, TP304 Tp316L ERW Smls Pipe Spool Prefabrication, ISO 7005 S235 Pn16 Pn25 Pn40 Slip on Flange and so on.