Aluminum alloy doors and windows are favored by consumers due to their advantages of light weight, high strength, corrosion resistance, and being extruded into various new complex cross-sectional materials. They are gradually replacing plastic, steel, wood, and other materials in doors and windows.   

In fact, to distinguish the quality of aluminum alloy doors and windows, the specific identification of the quality of aluminum alloy doors and windows is as follows:

Section thickness

At present, 70 and 90 series aluminum profiles are commonly used, with a national standard wall thickness of over 1.2mm and an aluminum profile wall thickness of 1.2mm~2.0mm.   

Oxidation degree

How to view the degree of oxidation of alien materials? In fact, it's very simple, that is, gently scratch the surface of the profile when selecting and purchasing it, and then see if the surface of the oxide film can be wiped off after scraping. Warm reminder, this test should not be conducted on the sample window, but can be conducted on the materials displayed by the merchant.   

Outline color light

In general, the cross-sectional color of aluminum profiles is silver white with uniform texture. If the color difference on the same profile is significantly different or the color is dark, it is not recommended to choose and purchase. Recycled aluminum or scrap aluminum can be used for production.   

Surface smoothness of contour

The surface of aluminum profiles is flat and bright, without depressions or protrusions. Aluminum alloy doors and windows processed by large manufacturers have relatively smooth and bright surfaces. Aluminum alloy doors and windows processed by small workshops may have slight concave and convex shapes due to mechanical or raw material problems. Balcony windows synthesized from this aluminum alloy profile are prone to oxidation and deformation in the later stage.   

Profile strength

When choosing, you can bend the profile moderately by hand. If you don't make an effort to bend the profile, you can conclude that the strength of the aluminum profile does not meet the standard. In addition, the strength of profiles is better if they are not too hard. Aluminum has a certain degree of toughness and non rigidity, which can be used to forge different shapes. Therefore, when purchasing, it is necessary to identify the brand and observe carefully.   

Contour Gloss

Aluminum alloy doors and windows should avoid purchasing obvious defects such as air bubbles, ash residue, cracks, burrs, and peeling of profiles. If the above phenomenon exists, it can be concluded that the secondary processing and forming of recycled aluminum or scrap aluminum is caused by uneven texture and uneven alloy proportion, which is prone to cracking and oxidation in the later stage.   

Soundproofing and sealing, see the structural principle of the profile

When choosing aluminum alloy doors and windows, it is important to pay attention to sound insulation and sealing, as well as construction principles, to avoid consumers' lack of understanding of the product and simplify or save on sealing structure design to reduce aluminum costs.   

Two types of wool strip combination sealing methods are used to operate the sealing process, increasing the number of sealing layers and reducing the number of sealing layers and air convection. Automotive sealing tape is used to improve the sealing performance.