Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering ASTM A334 Seamless and Welded Carbon/Alloy Steel Pipe for Low-Temperature Service, ASME SA179/ASTM A192/A210 CD Smls Carbon Steel Pipes Od 1/4"-4" Sch40/80, GOST 12821-80 304 Stainless Steel Welded Neck Flanges DN15-DN1000 and so on.