Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering ASTM A312 Tp321 Stainless Steel Welded Pipe for High Temperature Applications / Tubo De Acero Inoxidable Soldado, ASTM A213 T11/T22 Alloy Steel U Bend/J Bend Tube for Heat Exchangers and Boilers, API 5L Grade B / ASTM A252 Grade 3 Welded Carbon Steel Pipe for Piling and Foundation Works and so on.