EN ISO 4628-4-2003 色漆和清漆.漆膜降解的评定.缺陷的量值和大小以及外观均匀变化强度的规定.第4部分:裂纹等级的评定 ISO 4628-4-2003
Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 4: Assessment of degree of cracking ISO 4628-4:2003