Malleable Iron Pipe Fittings, Grooved Fittings, Butt Weld Pipe Fittings manufacturer / supplier in China, offering ASTM A312 TP304/304L Tp316/316L Stainless Steel Welded Seamless Pipe, ASTM-A312 304/304L 316/316L Brushed Polished Welded Stainless Steel Tube Pipe, ASTM A312 TP304 Tp316 Pickled/Annealed Seamless/Welded Stainless Steel Pipe and so on.