DS EN 1092-2:1997
DS EN 1092-2:1997 Flanges And Their Joints - Circular Flanges For Pipes, Valves, Fittings And Accessories, Pn Designated - Part 2: Cast Iron Flanges Defines requirements for circular flanges made from ductile, grey and malleable cast iron for DN 10 to DN 4000 and PN 2,5 to PN 63.