BS EN ISO 12944-4:2017

Paints and varnishes. Corrosion protection of steel structures by protective paint systems. Types of surface and surface preparation | Status: Current, Project Underway

1 Scope 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.