Safety of machinery - Basic concepts, general principles for design - Part 2: Technical principles and specifications; German version EN 292-2:1991 + A1:1995— 47 стр.
Aerospace series - Pipe coupling 8°30<Minute> in titanium alloy - Elbows 90° bulkhead, long, welded end; German and English version EN 4188:2001— 17 стр.