Steel Pipes, Pipes Fittings, Socket Fittings manufacturer / supplier in China, offering Carbon Steel ASME B16.47 Series a Mss Sp44 A105 Welding Neck Flange, JIS B2220 Ss400 Standard RF JIS 5K 10K 30K Flange, Nickel Inconel Alloy ASTM B366-S N08825 Pipe Fittings and so on.