1 Scope
This document covers the following types of surfaces of steel structures consisting of carbon or low-alloy steel, and their preparation:
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— uncoated surfaces;
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— surfaces thermally sprayed with zinc, aluminium or their alloys;
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— hot-dip-galvanized surfaces;
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— zinc-electroplated surfaces;
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— sherardized surfaces;
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— surfaces painted with prefabrication primer;
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— other painted surfaces.
This document defines a number of surface preparation grades but does not specify any requirements for the condition of the substrate prior to surface preparation.
Highly polished surfaces and work-hardened surfaces are not covered by this document.