DIN EN ISO 5817:2006 焊接.钢、镍、钛及其合金的熔焊接头(束焊除外).缺陷的质量等级(ISO 5817-2003 + Cor.1-2006)
Welding - Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) - Quality levels for imperfections (ISO 5817:2003 + Cor. 1:2006); German version EN ISO 5817:2007