Steel Pipes, Pipes Fittings, Socket Fittings manufacturer / supplier in China, offering ASTM A105 B16.5 B16.20 Flange Rj Face Drip Bleed Ring, A182 F304 F316L B16.5 FF Flange Drip Bleed Ring, Stainless Steel En 1092-1 X2crni18-9 1.4307 Pn16 Type 35 Welding Ring and so on.