How to buy alloy aluminum plate will not be cheated?

by:Caiyi     2019-12-28
1. It is necessary to see if the alloy aluminum plate has obvious distortion, whether the surface is smooth and flat, whether there are cracks or boldness of vision, scratches and burrs. If found, it is better not to buy it. 2, it is necessary to carefully check whether the surface color of the alloy aluminum plate has different shades of color difference, the color difference means that the quality is not up to standard. Of course, you can also put the same type of profiles together for comparison. Of course, if the color difference is too obvious, it is best not to buy. Check whether the section thickness of the alloy aluminum plate is the same as the marked model. 3. You can use a smooth hard object to scratch the surface of the alloy aluminum plate, leaving a white scratch. The alloy aluminum plate is gently wiped and observed by hand. If it cannot be wiped off, it indicates that there may be a problem with the quality of the material, but on the contrary, if it can be easily wiped off, it indicates that the oxide film thickness on the surface of the profile is qualified.
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