Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering ANSI DIN En 1092-1 Stainless Steel Flange Forged Threaded Plate RF/FF Flange, ASTM A249 TP304/316/304L/316L Smls Stainless Steel Pipe Heat Exchanger Tubes, ASTM A252 Gr. 3 Seamless Carbon Steel Pipe Hollow Boiler Tubes and so on.