Carbon Steel Cap, Carbon Steel Concentric Reducer, Sockolet manufacturer / supplier in China, offering ASME B16.9 ASTM A234 Wpb ASME A403 Wp 304h ASTM A403 Wp 304 Seamless Forged Carbon Steel Butt-Welding Pipe Fitting Straight Reducing Tee for Oil, Aluminum Pipe Fitting Equal Flange Elbow Concentric Eccentric Reducer Equal Unequal Tee, SS304 SS316L Sanitary Stainless Steel Welding Stainless Pipe Reducer Concentric and so on.