Petroleum and natural gas industries - Compact flanged connections with IX seal ring (ISO 27509:2012); English version EN ISO 27509:2012, only on CD-ROM— 115 стр.
Flanges and their joints - Part 4: Qualification of personnel competency in the assembly of the bolted connections of critical service pressurized systems; German version EN 1591-4:2013— 20 стр.
Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges; German version EN 1092-1:2007— 131 стр.
Water-tube boilers and auxiliary installations - Part 3: Design and calculation for pressure parts of the boiler; German version EN 12952-3:2011— 167 стр.