Specification and approval of procedures for welding metallic materials; part 4: welding procedure tests for the arc welding of aluminium and its alloys; german version EN 288-4:1992— 20 стр.
Approval testing of welders - Fusion welding - Part 2: Aluminium and aluminium alloys (includes Amendment A1:1997); German version EN 287-2:1992 + A1:1997— 20 стр.
Specification and approval of welding procedures for metallic materials - Part 4: Welding procedure tests for the arc welding of aluminium and its alloys (includes Amendment A1:1997); German version EN 288-4:1992 + A1:1997— 21 стр.
Specification and approval of welding procedures for metallic materials - Part 4: Welding procedure tests for the arc welding of aluminium and its alloys (includes Amendment A1:1997); German version EN 288-4:1992 + A1:1997— 21 стр.