Use measuring tools such as micrometer, meter ruler and vernier caliper to measure. According to demand, select products provided by aluminum plate manufacturers for evaluation. And choose different measuring tools according to the magnitude of the measured size to measure the thickness, width, length, unevenness, diagonal and other products of the aluminum plate. At least three points are selected for each measurement to determine whether the aluminum plate size or error is Even, whether it is within the national standard.

The aluminum plate manufacturer is required to provide the aluminum plate material list. Good aluminum plate manufacturers will test the composition and performance of each batch of aluminum plates. After the aluminum plate manufacturer provides the material list, check whether the composition and performance of the product corresponding to the material list are controlled within the scope of the national standard. And note that the material list must be stamped with the official seal of the manufacturer. If there is a problem in the use of the aluminum plate, the material list can be used as the basis to test the aluminum plate and raise a quality objection to the manufacturer.