Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering Seamless Heat Transfer Tubes for Industrial Heat Exchangers ASTM A312 TP304/Tp316/Tp347/Tp317, GB 5310 20g Seamless Carbon Steel Boiler Tube for High Pressure Steam and Power Plant Applications, ASTM A312 TP304/Tp316 Stainless Steel Heat-Exchanger Tubes Seamless Pipe and so on.