UNE-EN ISO 13919-1:2020 Electron and laser-beam welded joints - Requirements and recommendations on quality levels for imperfections - Part 1: Steel, nickel, titanium and their alloys (ISO 13919-1:2019)
2020UNE-EN ISO 13919-1:2020 Electron and laser-beam welded joints - Requirements and recommendations on quality levels for imperfections - Part 1: Steel, nickel, titanium and their alloys (ISO 13919-1:2019)
1997UNE-EN ISO 13919-1:1997 WELDING. ELECTRONS AND LASER BEAM WELDED JOINTS. GUIDANCE ON QUALITY LEVELS FOR IMPERFECTIONS. PART 1: STEEL (ISO 13919-1:1996).