EN ISO 5817-2014 焊接 钢、镍、钛和其合金的熔焊接头(束焊除外)
EN ISO 5817-2014 Welding - Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) - Quality levels for imperfections焊接 钢、镍、钛和其合金的熔焊接头(束焊除外) 缺陷的质量等级
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