Steel Pipes, Pipes Fittings, Socket Fittings manufacturer / supplier in China, offering 52-Inch Awwa D Lap Joint Flange for Industrial Applications, Carbon Steel Alloy Steel 13cmo4 15m03 Wpl6 Wpb Butt Weld Fittings, ASTM A350 Gr. Lf2 Lf3 Cl1 ASME B16.47 Serie B Welding Neck Flange and so on.