blasted acc. to ISO 8501-1, cleanliness scale Sa 2½. - r' C% @# A8 w& ~$ Z; D+ `7 g" @ L5 A
ISO 8501-1:1994 6 @2 x0 \1 Z) S- L; ~ U w3 W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.. T$ j$ v, i a& [( ~# q http://www.3dportal.cn/discuz/viewthread.php?tid=309855&highlight=8501 ! P) F3 o- a5 A2 ? & N5 M3 m$ j- [- _* b) h8 i1 V最新版的;, [! d5 ]6 i4 b) q3 Y
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 / @- v5 i) e( m! Jhttp://www.3dportal.cn/discuz/viewthread.php?tid=336910&highlight=8501