DIN EN ISO 8501-1 E:2006-09 涂料和有关产品使用前钢衬底的制备 表面清洁度的目测评估 第1部分:未涂覆钢衬底和原有涂层彻底清除的钢衬底的锈蚀等级和制备等级(草案)
Preparation of steel substrates prior to use of coatings and related products Visual assessment of surface cleanliness Part 1: Corrosion levels and preparation levels for uncoated steel substrates and steel substrates from which the original coating has b