作业帮除锈按种类来分可分为那几种?他们的级别标准和具体要求各是什么?
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除锈按种类来分可分为那几种?他们的级别标准和具体要求各是什么?
除锈按种类来分可分为那几种?他们的级别标准和具体要求各是什么?
除锈按种类来分可分为那几种?他们的级别标准和具体要求各是什么?
Sa3
Blast cleaning to metallic luster.
Mill scale, rust and foreign matters Shall be removed completely
Sa2 1/2
Very thorough blast cleaning.
Mill scale, rust and foreign matters shall be removed to the extent that the only traces remaining are slight stains in the form of spots or stripes
Sa2
Thorough blast cleaning.
Almost all mill scales, rust and foreign matters shall be removed
Sa1
Light blast cleaning, the surface shall be free from visible grease or oil, dust or dirt, and have no loose mill scale, rust or flux etc.,
St3
Hand tool or power tool cleaning, removing rust, loose mill scale and loose paint by using power tools to sand, grind chip or otherwise.
St2
Hand tool or power tool cleaning, removing loose rust, loose mill scale and loose paint by using and tools to sand, scrape, brush, chip or otherwise