Welding - Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) - Quality levels for imperfections
焊接.钢、镍、钛及其合金的熔焊接头(不包括束焊)缺陷的质量等级
The objective of this Standard is to provide quality levels of imperfections in fusion-welded joints (except for beam welding) in all types of steel, nickel, titanium and their alloys. It applies to material thickness ≥ 0.5 mm.