... fittings and fittings,If you have interested in our product stainless steel pipe and fittings:Grade304, 304L, 316, 316L,316Ti, 310S, 321 ... machinery, water supply, boiler heat exchangers etc.Our main products is seamless steel pipes(tubes), and the raw material is purchased from ... Baosteel Group and other large steel factories.We always insist on that quality is the first ...