... The main material is 304 316 316L 2205 2507 etc . Stainless Steel Flange size: 1/2''-24'' wall thickness: sch 5 ... : ISO, ANSI,JIS,DIN,GB ect.1,Product: Stainless Steel FlangeWelded Neck Flange,Slip on Flange,Plate Flange, Blind ... EN 1092-13,.Materials :304, 304L ,316 ,316L ,316Ti,317L,,321 ,2520,S31803, 2205, etc.4,Size: 15-610mm, ... , or as per customer's request. welding neck stainless steel flange