Pipe threads where pressure-tight joints are not made on the threads - Part 1: Dimensions, tolerances and designation (ISO 228-1:2000); German version EN ISO 228-1:2003— 11 стр.
Marking of electrical equipment with ratings related to electrical supply - Safety requirements (IEC 61293:1994); German version EN 61293:1994— 14 стр.
Graphical symbols for diagrams - Part 2: Symbol elements, qualifying symbols and other symbols having general application (IEC 60617-2:1996); German version EN 60617-2:1996— 40 стр.