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)
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:未涂覆钢衬底和整体去除以前涂层后钢衬底的锈蚀等级和制备等级(ISO 8501-1-2007)