... We are specialized in producing and selling seamless stainless steel pipes, which are widely used in boiler, heat ... transportation. Meantime, we can also provide super clean (BA) pipes and fittings, the inside roughness can be ... 321/H, 347H, 317/317L, 310S (2520), duplex steel (S31803/S32205), etc. We have experienced engeering team, ... quality products for our clients. TP316/316L Stainless Steel Pipes