DS/EN 1759-3:2003 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, class designated - Part 3: Copper alloy flanges
This standard specifies requirements for circular copper alloy flanges and copper alloy collars combined with loose steel plate flanges in Class designations Class 150 and Class 300 and nominal sizes from DN 10 to DN 900 (NPS 1/2 to NPS 36) in the types shown in Table 1.
DS/EN 1759-3:2003 history
2004DS/EN 1759-3/AC:2004 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, Class designated - Part 3: Copper alloy flanges
2003DS/EN 1759-3:2003 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, class designated - Part 3: Copper alloy flanges