BS EN 1092-3:2003(2016) Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN designated — Part 3 : Copper alloy flanges
2004BS EN 1092-3:2004 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Copper alloy flanges
2004BS EN 1092-3:2003 Flanges and their joints - Circular flanges for pipes,valves,fittings and accessories,PN designated - Part 3:Copper alloy flanges