Carbon Steel Cap, Carbon Steel Concentric Reducer, Sockolet manufacturer / supplier in China, offering ANSI/DIN/GOST/BS Carbon Steel / Stainless Steel A105/Q235/20#/304L/316L Wn/So/Bl/Sw Forged Flange, ANSI B16.5 Class 150/300/600/900/1500/2500 Stainless Steel Ss Thread Threaded Flange, Sch40 Sch80 90 Degree Carbon Steel Back Butt Welded Reducer Pipe Fittings Stainless Steel Reducer Pipe and Fitting and so on.