Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, Class designated - Part 1: Steel flanges, NPS 1/2 to 24; German version EN 1759-1:2004— 78 стр.
Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, Class designated - Part 3: Copper alloy flanges; German version EN 1759-3:2003 + AC:2004— 31 стр.