Railway applications - Rescue coupler - Performance requirements, specific interface geometry and test methods; German version EN 15020:2006+A1:2010— 28 стр.
Welding - Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) - Quality levels for imperfections (ISO/DIS 5817:2021); German and English version prEN ISO 5817:2021