Steel Pipes, Pipes Fittings, Socket Fittings manufacturer / supplier in China, offering ASTM A350 Gr. Lf2 Lf3 Cl1 ASME B16.47 Serie B Welding Neck Flange, ASTM A420 Gr. Wpl6 Mss Sp-95 Concentric Eccentric Nipple Transition, ASME B16.11 ASTM A350 Gr. Lf2 Cl1 3000# 6000# Sw Tee and so on.