Tungsten electrodes for inert gas shielded arc welding and for plasma cutting and welding; codification (ISO 6848:1984); german version EN 26848:1991— 6 стр.
Specification and approval of welding procedures for metallic materials - Part 2: Welding procedure specification for arc welding (includes Amendment A1:1997); German version EN 288-2:1992 + A1:1997— 7 стр.
Specification and qualification of welding procedures for metallic materials - Welding procedure specification - Part 1: Arc welding (ISO 15609-1:2004); German version EN ISO 15609-1:2004— 12 стр.
