The ISO 4998-2023 standard specifies the technical requirements for structural mass continuous hot-dip galvanizing and zinc-iron alloy coatings of carbon steel sheets. The standard is suitable for applications requiring corrosion resistance and covers different grades, coating masses, book conditions and surface preparation. The standard defines terms such as continuous hot-dip galvanizing, ordinary coatings, zinc-iron alloy coatings, and describes the classification and characteristics of coatings. ISO 4998-2023 replaces the fifth edition of the technical revision, ensuring conformity with modern manufacturing techniques and application requirements. The standard does not include commercial mass or tensile mass steel and is intended to provide clear technical guidance and quality control basis for production and application.