GB/T 43665-2024 "Hot Rolled Rare Earth Rebar for Reinforced Concrete" specifies the classification, grade, order content, size, shape, weight allowable deviation, technical requirements, test methods, inspection rules, Encasement, marking and mass certificate requirements of hot rolled rare earth steel bars. This standard is applicable to hot rolled round steel bars and ribbed steel bars used in reinforced concrete structures. A series of GB/T and JGJ related standard documents are cited to ensure the accuracy and Reliability of steel bars in terms of chemical composition, physical performance and quality control to meet the design and safety requirements of construction works.