Aluminum alloy profile can be divided into raw aluminum and cooked aluminum, raw aluminum is less than 98% aluminum, the properties of brittle hard, can only sand casting products; cooked aluminum is more than 98% aluminum, its soft, can be rolled over many kinds of vessels.

1, the chemical composition is unqualified, in the product mixed with a lot of miscellaneous aluminum and waste aluminum aluminum alloy profile its cost will be greatly reduced, but it will lead to the construction of aluminum alloy profile chemical composition is unqualified, severe will also endanger the safety of the construction project.

2, the residual aluminum alloy profile will reduce a lot of closed time, together to also reduce the loss of chemical reagents, the cost is reduced, but the corrosion resistance of the profile is also greatly reduced.

3, The thickness of the oxide film is thin. The national standard rules of the oxide film thickness of aluminum alloy profile should not be less than 10um. If the thickness is not enough, then the surface of aluminum alloy profile is easy to rust, corrosion. According to the expert's budget every cut 1um of oxide film thickness, then each ton of profile can reduce the power consumption cost of at least 150 yuan.

Unqualified aluminum alloy profile, in the use of the air, rain and sunlight and other effects, will lead to the deformation of aluminum alloy profile, and even the formation of glass rupture and fall off and other phenomena.