blasted acc. to ISO 8501-1, cleanliness scale Sa 2½.2 F, K/ z) y1 v! Q. O. v
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ISO 8501-1:1994 6 p7 m- B8 x' m2 _! u7 F) ]! G
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. 0 f2 z9 {8 I1 s6 X% S; ~1 lhttp://www.3dportal.cn/discuz/viewthread.php?tid=309855&highlight=8501" }% g4 D) G$ _( O3 D. H
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最新版的; * k/ C$ G6 ?# YISO 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 coatings4 ~# U: X& `# r' ]) r. T9 s& O http://www.3dportal.cn/discuz/viewthread.php?tid=336910&highlight=8501