This standard describes in detail the complete process for testing the corrosion performance of steel bars in a chloride solution corrosion environment, including test equipment, test solution, test conditions, specimens, test time, test procedure, evaluation of results and test reports. The main application is to evaluate the corrosion performance of steel bars, while indicating that the standard can be used to evaluate the corrosion performance of steel bar welding joints. In terms of reference documents, the normative references are GB/T 1266 (chemical reagent sodium chloride) and GB/T 16545-2015 (removal of corrosion products on corrosion samples of metals and alloys). In terms of terms and definitions, specific terms are not defined in this document. The test equipment requires a cycle infiltration corrosion tester, and it is mentioned that Miscellaneous similar equipment that meets the standard test conditions can also be used.