The poor quality aluminum profile with waste aluminum has four characteristics

Unqualified aluminum alloy doors and Windows, the use of the sun, air, rain and other effects, resulting in aluminum deformation, and even cause glass cracking, falling off and other phenomena.

Inferior aluminum profile has the following four characteristics:

1. Thin oxide film thickness. National standards stipulate that the oxide film thickness of building aluminum profiles should not be less than 10um (micron). Thickness is not enough, aluminum surface corrosion, corrosion. Sampling in some proletarian name, site, production license, certificate of aluminum profile, its oxide film thickness is only 2 to 4um, some even no oxide film. It is estimated by experts that if the oxide film thickness is reduced by 1um, the power consumption cost can be reduced by more than 150 yuan per ton of profiles.

2. The chemical composition is not qualified. The aluminum profile mixed with a lot of miscellaneous aluminum and waste aluminum can greatly reduce the cost, but it will lead to the unqualified chemical composition of the construction aluminum profile, which seriously endangers the safety of the construction project.

3. Reduce the wall thickness of profile. 90 series push-pull window type, according to the national standard its aluminum profile wall thickness is not less than 1.4mm, some Guangdong products only 0.6 to 0.7mm. 46 series of ground door type, the national standard of aluminum profile wall thickness is not less than 1.62 mm, sampling, guangdong some products only 0.97 to 1.18 mm.

4. Inferior aluminum profile greatly reduces the closing time, reduces the loss of chemical reagents, and reduces the cost, but the profile corrosion resistance is also greatly reduced.