Preparation of steel substrates before application of paints and related products - Visual assessment of surface cleanliness - Part 1: Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coatings (ISO 8501-1:2007); German version EN ISO 8501-1:2007
涂料和相关产品使用前钢衬底的制备.表面清洁度的目视评定.第1部分:未涂覆的钢衬底和全面去除以前涂层后的钢衬底的锈蚀等级和制备等级(ISO 8501-1-2007);德文版