Carbon Steel Cap, Carbon Steel Concentric Reducer, Sockolet manufacturer / supplier in China, offering Metal Promotion ANSI B16.5 Forged So Slip on Weld Neck Pipe Stainless Steel Flange, GOST33259 Forged/Forging Fitting Carbon/Stainless Steel Pn10/16 Welding/Weld Neck/Threaded/Blind/Slip on/Flat Plate/Socket RF/FF Pipe Flange, Stainless Steel Butt Weld Flange Stainless Steel Cast Flange Stainless Steel Pipe Flange and so on.