Industrial valves - Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems - Part 1: PN-designated valves; German version EN 558-1:1995— 18 стр.
Quenched and tempered steels - Part 2: Technical delivery conditions for unalloyed quality steels (includes Amendment A1:1996); German version EN 10083-2:1991 + A1:1996— 18 стр.