This standard defines a standard procedure for preparing cold rolled steel plates for testing paints, varnishes, conversion coatings, etc. The procedure includes steps such as conversion coating treatment, steam degreasing, solvent brushing, solvent wiping, and alkaline cleaning to ensure uniform and repeatability on the surface of the steel plate for subsequent Coating performance testing. The standard states that the units used are SI units and reminds users of relevant safety and Environmental requirements. This standard provides a systematic method for the treatment and Coating testing of steel plates to ensure the accuracy and conformity of test results.