The NF T37-001-1-2017 standard specifies the film thickness measurement method for coil cladding metals. The standard details the test equipment, sample preparation, operation steps and result analysis to ensure the conformity and accuracy of Coating thickness measurement. As an important part of quality control, film thickness directly affects the durability, protective performance and Appearance mass of metal products. The standard is widely used in the production and testing of coil cladding metals in the construction, home appliance and automotive industries, providing manufacturers and users with reliable technical references to ensure the Stability and performance of products during use.