The following are some common standards for the materials of threaded steel and their corresponding regions:   Region Standard China GB1499.2-2024 “Steel for Reinforced Concrete – Part 2: Hot Rolled Ribbed Bars” (To be implemented on September 25, 2024)Previously implemented standard was GB1499.2-2018 The United Kingdom BS4449-1997/BS4449-2005 South Korea KS