Distinguishing Characteristics of Inferior Aluminum Profile
1, The chemical composition unqualified. Scrap aluminum profile cost greatly reduced if doping a large number of miscellaneous aluminum, but will lead to the construction of aluminum profile unqualified on chemical composition, seriously endanger construction safety.
2, Poor quality aluminum material reduce the sealing time, reduce the loss of chemical reagents, cost reduction, but the corrosion resistance of the profile is greatly reduced.
3. Thin oxide film thickness. National standards for the construction of aluminum oxide film thickness should not be less than 10um (micron). Thickness is not enough, aluminum profile surface easily to be rust, corrosion. For sampling, some aluminum profiles which do not have the production name, site, manufacturing license, certification, its oxide film thickness of only 2 to 4um, and some even no oxide film. Experts estimate that the reduction of 1um oxide film thickness, which can reduce the cost of electricity consumption more than 150 yuan for each ton.
Unqualified aluminum profile used in air, rain, sunlight and other effects will result in deformation of aluminum, and even caused glass rupture, shedding and so on.