BS EN ISO 12944-4:2017

This standard BS EN ISO 12944-4:2017 Paints and varnishes. Corrosion protection of steel structures by protective paint systems is classified in these ICS categories:

• 87.020 Paint coating processes
• 25.220.10 Surface preparation
• 91.080.10 Metal structures

This document covers the following types of surfaces of steel structures consisting of carbon or low-alloy steel, and their preparation:

• uncoated surfaces;

• surfaces thermally sprayed with zinc, aluminium or their alloys;

• hot-dip-galvanized surfaces;

• zinc-electroplated surfaces;

• sherardized surfaces;

• surfaces painted with prefabrication primer;

• 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.