ISO 12944 is an international standard on corrosion protection of steel structures by protective paint systems. It consists of several parts: Part 1: General introduction Part 2: Classification of environments Part 3: Design considerations Part 4: Types of surface and surface preparation Part 5: Protective paint systems Part 6: Laboratory performance test methods and associated assessment criteria Part 7: Execution and supervision of paint work Part 8: Development of specifications for new work and maintenance Part 9: Protective paint systems and laboratory performance test methods for offshore and related structures
See also EN 1993 Eurocode 3 – Design of steel structures (a European Standard that references ISO 12944)
References ISO 12944-5 page on iso.org