How to identify the characteristics of inferior aluminum profiles

Unqualified chemical composition

The cost of aluminum profiles mixed with a large amount of miscellaneous aluminum and waste aluminum in the product is greatly reduced, die casting company ， but it will lead to unqualified chemical composition of architectural aluminum profiles, which will seriously endanger the safety of construction projects.


Shorten closing time

Inferior aluminum profiles greatly reduce sealing time, loss and cost of chemical reagents, but the corrosion resistance of the profiles is also greatly reduced.


thin oxide film

The national standard stipulates that the thickness of the oxide film of architectural aluminum profiles shall not be less than 10um (microns). If the thickness is not enough, the surface of the aluminum profile is easy to rust and corrode. In the spot check, some aluminum profiles without production name, factory address, production license and qualification certificate have a thickness of only 2-4um oxide film, and some even have no oxide film.



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