ASTM A1122/A1122M-22 Standard Test Method for the Bending Test of Metallic Coated Steel Sheets for Assessing Coating Adhesion specifies a method for evaluating coating adhesion of metallic coated steel sheets by bending test. This standard test method is applicable to a variety of metallic coated steel sheets, especially coatings used in industries such as construction, automotive, and home appliances. In the test, the steel sheet is bent to a specific angle and the adhesion of the coating to the substrate is evaluated by observing whether the coating is flaking, crazing, or peeling. This test method provides an important basis for the quality control of coatings or coatings, and helps to verify the durability and Reliability of coatings. The standard applies to Coating manufacturers, coating application providers, and materials science research fields.