blasted acc. to ISO 8501-1, cleanliness scale Sa 2½.6 t: F7 f+ }7 |
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涂料和有关产品使用前钢衬底的制备.表面清洁度的视觉评价.7 S) a' T, x1 R1 ^' P% {6 W http://www.3dportal.cn/discuz/viewthread.php?tid=309855&highlight=8501' K0 W8 \1 W) K9 z
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ISO 8501-1:2007 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 t4 J6 o* h7 |, T% f8 Y http://www.3dportal.cn/discuz/viewthread.php?tid=336910&highlight=8501