... ANSI B16.5, BS4504, DIN2633, EN1092-1 ISO TUV Certificate Forged Steel Flange:Welding Neck Flanges, Slip-on Flanges, Blind , Plate Flanges ... :6Bar, 10Bar, 16Bar, 25Bar, 40BarMATERIAL: P245GH, C22.8, S235JRG2, ST37-2 3. EN1092-1 FlangesPRESSURE GRADE:PN2.5,PN6,PN10,PN16 ... ,PN6,PN10,PN16,PN25,PN40,PN50,PN110,PN150, PN260,PN420 Forged Carbon Steel Flange