DS EN 1092-3:2003
DS EN 1092-3:2003 Flanges And Their Joints - Circular Flanges For Pipes, Valves, Fittings And Accessories, Pn Designated - Part 3: Copper Alloy Flanges Defines requirements for circular copper alloy flanges and copper alloy collars combined with loose steel plate flanges in PN designations from PN 6 to PN 40 and nominal sizes from DN 10 to DN 1800.