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ISO 12944-4:1998

Paints and varnishes - Corrosion protection of steel structures by protective paint systems - Part 4: Types of surface and surface preparation

This part of ISO 12944 deals with 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 part of ISO 12944 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 part of ISO 12944.

Content Provider
International Organization for Standardization [ISO]


As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.