blasted acc. to ISO 8501-1, cleanliness scale Sa 2½. - f2 q' x$ k4 O. y2 o3 h/ S1 Q7 S. ]) A# s3 p& W5 }
ISO 8501-1:1994 : }7 D% r8 S2 i
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. 3 q8 f# G* S% M* vhttp://www.3dportal.cn/discuz/viewthread.php?tid=309855&highlight=85019 f, R1 \3 E1 J, `1 `
) P+ E: T9 b4 X- F% Z4 w最新版的; 4 E' P, w2 @+ W3 U, e% uISO 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" A7 Y3 T% L4 |) @ http://www.3dportal.cn/discuz/viewthread.php?tid=336910&highlight=8501