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How To Tell The Quality Of Aluminum Coil?
Dec 27, 2017

How to tell the quality of aluminum coil?

1, the surface of the coil should be clean, cracked and oxidized debris is unqualified.

2, the surface of the coil is not allowed to have sag, scratches, indentation and other defects, but its depth can not exceed the allowable negative deviation of the plate, and to ensure the minimum thickness.

3, process aluminum clad plate does not allow the shedding part of the coating and the bubble of the coating.

4, the board surface does not allow to repair defects within the thickness difference.