Industrial valves - Isolating valves for low-temperature applications - Part 1: Design, manufacturing and production testing (ISO 28921-1:2013); German and English version prEN ISO 28921-1:2016
Industrial valves - Isolating valves for low-temperature applications - Part 2: Type testing (ISO 28921-2:2015); German version EN ISO 28921-2:2017— 28 стр.
Industrial valves - Isolating valves for low-temperature applications - Part 1: Design, manufacturing and production testing (ISO 28921-1:2013); German version EN ISO 28921-1:2017— 36 стр.
