2018EN 1092-1:2018 Flanges and their joints - Circular flanges for pipes@ valves@ fittings and accessories@ PN designated - Part 1: Steel flanges
2013EN 1092-1:2007+A1:2013 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges
2007EN 1092-1:2007 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges (Incorporates Amendment A1: 2013; Incorporating Corrigendum May 2014)
2001EN 1092-1:2001 Flanges and Their Joints - Circular Flanges for Pipes, Valves, Fittings and Accessories, PN Designated - Part 1: Steel Flanges