Aluminum sheet coil has a wide range of uses. It can be used to make decorations and decorate the appearance of buildings, including elevators that are inseparable from our lives.
The quality of aluminum coil can be distinguished from several aspects:
1. The coil surface shall be clean, and it is unqualified if there are cracks and oxidized impurities.
2. The surface of the coil shall be free of defects such as indentation, scratch and roll indentation, but its depth shall not exceed the
allowable negative deviation of the plate, and the minimum thickness shall be guaranteed.
3. The process of aluminum clad thick plate is not allowed to have the falling off part of the coating and the bubble of the coating.
4. Defects within the range of thickness difference are not allowed to be repaired on the plate surface.