GB/T 30789.9-2014
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9部分:丝状腐蚀等级的评定
Paints and varnishes.Evaluation of degradation of coatings.Designation of quantity and size of defects, and of intensity of uniform changes in appearance.Part 9:Assessment of degree of filiform corrosion
GBT30789.9-2014, GB30789.9-2014