KS M ISO 8501-3-2008(2019) 涂装涂料和有关产品前钢基体的制备表面清洁度的目视评定第3部分:焊缝、切边和其他有表面缺陷区域的制备等级
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 imp