... , Slip-on, Blind, Plate ANSI B16.5, BS4504, DIN2633, ISO 7005-1 ISO TUV Certificate Forged Carbon Steel Flange:Welding Neck Flanges, Slip ... GRADE:PN2.5,PN6,PN10,PN16,PN25,PN40 4. ISO Flanges STANDARD: ISO 7005-1PRESSURE GRADE:PN2.5,PN6,PN10,PN16,PN25 ...