Flat Welding Flange ANSI B16.5/B16.47 Flange, DIN Standard Flange, EN1092-1 Flange EN10204 3.1 Certificate. Medium:W.O.G Slipon Welding ... , SUS F304L, SUS F316, SUS F316L, SUS F321 etc Mainly Flange Standards include:1. DIN 2527 (PN6, PN10, PN16 PN25, PN40 ... Flange2. ANSI B16.5 150LB (300LB, 600LB) Blind/ Slip-on/SCH 10(SCH 40, SCH 80) WeldingNeck/ Plate/ Socket weld/ Threaded/ Lap Joint Flange3. JIS ...