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 - Dimensions of gaskets for Class-designated flanges - Part 2: Spiral wound gaskets for use with steel flanges; German version EN 12560-2:2013— 17 стр.
Petroleum and natural gas industries - Compact flanged connections with IX seal ring (ISO 27509:2012 + Cor. 1:2013); English version EN ISO 27509:2012 + AC:2013, only on CD-ROM— 115 стр.