Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering ASME SA179 / SA192 Seamless Carbon Steel Tube for Condenser and HVAC Equipment, ASME B16.5 Forged Stainless Steel ASTM A182 F304/F316 Weld Neck Slip on RF Blind Flange for Piping Systems, ASTM B111 CZ110 Copper Tube for Engine Oil Cooler and Heat Exchanger and so on.