Steel Pipes, Pipes Fittings, Socket Fittings manufacturer / supplier in China, offering ASTM A350 Gr. Lf2 Cl1 B16.5 36" 38" 40" Weld Neck Flange, Km/OEM Wooden Case Butt Weld Stainless Steel with ISO on Stock, Fresh Production Km/OEM Wooden Case 1/2" to 72" Fitting Carbon Steel with CE and so on.