1.Stainless Steel Pipe Fittings - Flange 2.Material: 304, 304L, 316, 316L, 321, 317L, 904L, S31803, etc 3.Size:1/2"-48" 1.Item:Stainless Steel Pipe Fittings - Flange2.standard: ASME/ANSI B16.9, GB/T 12459, BSEN 10253-4: 2008, SH3408-96 SH3409-93.HS:73041990004.High quality and service