... :1/2''-24'' TUV and ISO9001 Stainless steel flange1.Grade:304L,316L,310,321,347,904L,Super Duplex2. ... 240''(DN 15 to DN 600)4.Material:carbon steel,stainless steel and alloy steel.5.Standard:ANSI,DIN,EN1092-1,NFE,AS,JIS ... ,thread,Socket and etc.7.Process:free foring,plate cutting. Stainless steel flange