GB/T 8923.3-2009
ActivePreparation of steel substrates before application of paints and related products - Visual assessment of surface cleanliness - Part 3: Preparation grades of welds,edges and other areas with surface imperfections
涂覆涂料前钢材表面处理 表面清洁度的目视评定 第3部分：焊缝、边缘和其他区域的表面缺陷的处理等级
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