NF E29-200-4*NF EN 1092-4:2002 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 4 : aluminium alloy flanges.
2002NF E29-200-4*NF EN 1092-4:2002 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 4 : aluminium alloy flanges.