Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges; German version EN 1092-1:2007+A1:2013— 132 стр.
Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 1: Non-metallic flat gaskets with or without inserts; German version EN 1514-1:1997— 17 стр.
Plastics - Methods of test for the determination of the effects of immersion in liquid chemicals (ISO 175:2010); German version EN ISO 175:2010— 28 стр.