... seamless pipe,ERW weld ,spiral pipe seamless pipe, flange,elbow,galvanized tube and other product).All the product have been approved ... requirement.Name:Flanges, Built to Different JIS Standards, Available in Various MaterialsRaw materials: stainless steel 304, 304L, 316, 316L and 321Size ... gmail com Flanges, Built to Different JIS Standards, Available in Various Materials