welding neck stainless steel flange .The main material is 304 316 316L 2205 2507 etc . Stainless Steel Flange size: 1/2''-24'' wall thickness ... standard: ISO, ANSI,JIS,DIN,GB ect.1,Product: Stainless Steel FlangeWelded Neck Flange,Slip on Flange,Plate Flange, Blind Flange ... 7,Packing: Wooden box, or as per customer's request. welding neck stainless steel flange