Aluminum profiles are increasingly being used in various industries in modern times. Many industries will involve metal building products, such as aluminum profiles. However, the market is flooded with various aluminum profiles. How to distinguish their advantages and disadvantages: 
High-quality aluminum profiles are naturally soft, have high hardness, and have a definite surface gloss. 
Low-quality aluminum profiles are brittle and their service life is greatly reduced. 
So, in the process of choosing aluminium profiles, how can we identify inferior aluminium profiles? Here are several methods and tips for identifying inferior aluminium profiles: 
If you want to learn how to identify inferior aluminum profiles, then before choosing aluminum profiles, you must first understand the characteristics of inferior aluminum profiles. 
Aluminum profiles generally have the following characteristics: 
The thin oxide film thickness. 
According to national standards, the oxide film thickness of building aluminum profiles must be no less than 10 micrometers. If the thickness is insufficient, the surface of the aluminum profiles is prone to rust and corrosion. During the sampling process, the oxide film thickness of some aluminum profiles without production names, addresses, production licenses and qualification certificates was only 2 to 4 millimeters, and some even had no oxide film at all. According to experts' estimation, reducing the oxide film thickness by 1 micrometer can save more than 150 yuan in electricity consumption per ton of profiles. 
2. Unqualified chemical components. 
Aluminum profiles mixed with a large amount of impure aluminum and scrap aluminum can significantly reduce costs, but they will result in不合格 chemical composition of building aluminum profiles, seriously endangering the safety of construction projects. 
3. Unqualified chemical components 
Adding a large amount of impure aluminum and recycled aluminum to the aluminum profiles significantly reduces the cost, but it will result in the chemical composition of the aluminum profiles being unqualified, seriously endangering the safety of the construction project. 

4. Inferior aluminum profiles significantly reduce the sealing time, decrease the consumption of chemical reagents, lower the cost, but also greatly reduce the corrosion resistance of the profiles. 
The use of aluminum profiles is also affected by the presence of air and rain, which can cause the profiles to deform, and even lead to the breakage and detachment of glass. Therefore, when purchasing aluminum profiles, we must choose from reputable large manufacturers. 
Due to its certain advantages, most industrial aluminum profiles require custom frames to select materials, and in most cases, custom frames are needed. 
However, even though their surfaces are shiny, smooth and sleek, dust, oil stains, ink and other substances are inevitable during use. Therefore, the daily protection of industrial aluminum profiles is indispensable. 
So how do we maintain it? How do we remove these dust, ink stains and oil residues? 
Wipe it with a damp cloth or detergent, soap, etc. 
2. Wiping off cologne: 
You can also use lavender perfume to wipe off stubborn ink stains. However, pine resin is harmful to the human body, so you should wear a mask. 
3. Brush thickness: 
It should also be noted that during the routine maintenance of industrial aluminum profile frames, hard brushes or other similar tools should not be used for scrubbing, as this could damage the oxide film. 
4. Update Check: 
What is more important is to inspect every connection point of the aluminum profile frame to prevent any loose or damaged connections. 
In order to maintain the performance and appearance of the aluminum alloy profiles and extend their service life, it is necessary to carry out regular maintenance on the aluminum alloy profiles. The following are the maintenance methods for aluminum alloy profiles. 
When storing aluminum alloy profiles, it is strictly prohibited to store them together with chemical materials and moisture-sensitive materials. 
During transportation, the aluminum alloy profiles should be covered with tarpaulins to prevent rain and snow from entering. 
3. The storage environment for aluminum alloy profiles should be dry, bright, well-ventilated, and free from corrosive conditions. 
4. During the process of transporting aluminum alloy profiles, it is necessary to handle them carefully. Be sure not to cause scratches or bumps due to the appearance, as this could affect the aesthetic appeal. 
5. When storing aluminum alloy profiles, it is recommended to place the small standard profiles on a shelf. For the larger standard aluminum alloy profiles, the better storage method is to use wooden pads at the bottom to separate them from the ground, with the distance being more than 10 cm from the ground; when stacking the larger standard aluminum alloy profiles together, it is recommended to separate them vertically with materials such as wooden strips or boards. 
Of course, such problems are quite rare. For instance, choosing Baiyi Neng Aluminium to customize the aluminium profile frame. 
Due to the fact that its aluminum profiles are produced by melting and extruding pure aluminum, the processing accuracy is very high, and the installation process also complies with national standards. 
The selection of aluminum profile accessories is also very meticulous. Therefore, not only does the industrial aluminum profile have a long service life, but its accessories also have a long service life.