Specification and approval of welding procedures for metallic materials - Part 1: General rules for fusion welding (including Amendment A1:1997); German version EN 288-1:1992 + A1:1997— 9 стр.
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.
Industrial valves - Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems - Part 2: Class-designated valves; German version EN 558-2:1995— 19 стр.
