Surface imperfections, such as slivers, scabs, burrs, weld splatter, and gouges, shall be removed by grinding.

表面瑕疵，例如碎片，烧痕，焊渣，砂眼应用磨光机打磨。

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Pre-cleaning should include the removal of metal filings and weld splatter: both are potential sources for dirt in phosphate and electrocoat.

预清洗系统包括清除金属屑及焊渣， 它们是磷化和电泳槽内的污染物的来源。

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