Reducer Concentric, Flange, Elbow manufacturer / supplier in China, offering Carbon Steel Galvanized Flange/Blind DN300 PN10 Forged Steel PL Flanges, Stainless Steel Pipe Fitting SUS304 Carbon Steel, Stainless Steel Cap, ANSI/ASME B16.9 Carbon Steel Butt Weld 32" Lr/Sr 45/90/180 Degree Galvanize Elbow and so on.