GB/T 30790.1-2014 "Paints and varnishes – Corrosion protection of steel structures by protective paint systems – Part 1: General introduction" serves as the overarching document of this series of standards, specifying general requirements, terminology definitions, and durability classifications for corrosion protection paint systems for steel structures. The standard clearly divides durability into three ranges: low, medium, and high, providing a unified framework for the application of subsequent parts. It also standardizes the basis for assessing the extent of coating failure. The standard is applicable to the entire process of designing, selecting, applying, and maintaining corrosion protection paint systems for steel structures, ensuring systematic and consistent implementation of related work.