GB/T 30789.4-2015
China national
standard english version:
GB
中华人民共和国国家标准
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 30789.4-2015
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 色漆和清漆 涂层老化的评价 缺陷的数量和大小以及外观均匀变化程度的标识 第4部分:开裂等级的评定
Issued Date:2015-07-03
Implemented Date:2016-02-01
Issued by:
The Standardization Administration of the People's Republic of China