Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering HVAC & Plumbing and Equipment Isolation ASME B16.5 ASTM A105 Sw RF Flange, ASTM A182 F304/316 1/2"-24" ANSI B16.5 for Industrial Piping Systems Stainless Steel Flanges, ASME B36.10m Carbon Steel Pipe Gr. B Higher Carbon Content for Higher Pressure/Temperature and so on.