ISO 6520:1982被替代
Classification Of Imperfections In Metallic Fusion Welds, With Explanations
出版：International Organization for Standardization
专家解读视频
Classifies imperfections into the following groups: cavities, cracks, lack of fusion and penetration, solid inclusions, imperfect shape and miscellaneous imperfections not included in the groups above.
SS ISO 6520:1992 - Identical
SS EN 26 520:1992 - Identical
UNE EN 26520:1992 - Identical
NFA 89 230:1981 - Equivalent
DIN 8524-1 (1986) - Equivalent
UNI EN 26520:1993 - Equivalent
DIN 32502 (1985-07) - Identical
I.S. EN 26520:1992 - Identical
BS EN 26520:1992 - Identical
DIN EN 26520 (1991-12) - Identical
