This standard specifies the grade, code, size, shape, weight, technical requirements, test methods, inspection rules, packaging, marks and quality certificates of hot-rolled straight and round steel bars for reinforced concrete. This standard applies to hot-rolled straight and smooth round steel bars for reinforced concrete. This standard does not apply to recycled steel bars that are re-rolled from finished steel products.
GB 13013-1991 history
2017GB/T 1499.1-2017 Steel for the reinforcement of concrete—Part 1:Hot rolled plain bars
2008GB 1499.1-2008 Steel for the reinforcement of concrete. Part 1: Hot rolled plain bars
1991GB 13013-1991 Hot rolled plain steel bars for the reinforcement of concrete
GB 13013-1991 Hot rolled plain steel bars for the reinforcement of concrete was changed to GB 1499.1-2008 Steel for the reinforcement of concrete. Part 1: Hot rolled plain bars.