Stainless Steel Welding Neck Flange Standard: ANSI B16.5,DIN,JIS,UNI,BS4504,EN1092-1 Material:SS 1.Product detailsStainless Steel Welding Neck FlangeSize:3/4 ... 4"-30". Kinds Slip on flanges,welding neck flanges,blind flanges,plate flanges,socket welded flanges,threaded flanges,lap ... 20S,40S,80S,160,SCHXXS.Standard ANSI B16.5,DIN,JIS,UNI,BS4504,EN1092-1Material Stainless SteelGrade 304,304L,316,316L,321 ...