KS M ISO 8501-3-2008 涂料和有关产品使用前钢衬底的制备.表面清洁度的目视评定.第3部分:焊缝、切边及其他有表面缺欠的部位预处理等级
Preparation of steel substrates before application of paints and related products-Visual assessment of surface cleanliness-Part 3:Preparation grades of welds,cut edges and other areas with surface imperfections