The outstanding advantages of aluminum alloy doors and windows with thermal insulation and breaking bridges are high strength, good heat insulation, good rigidity, good fire resistance, large lighting area, good resistance to atmospheric corrosion, high overall performance, long service life, and good decorative effect. High-grade partition profile aluminum alloy doors and windows are the preferred products for high-grade architectural windows.
Aluminum alloy doors and windows surface quality requirements:
1. There should be no obvious scratches, scratches, bumps or other defects on the surface of windows and doors.
2. There should be no obvious color difference on the colored surface of the adjacent bars of windows and doors.
3. There should be no aluminum chips, burrs, oil spots or other stains on the surface of doors and windows, and there should be no spilled adhesive at the assembly joints.
How to choose aluminum alloy doors and windows
The characteristics of aluminum alloy doors and windows compared with steel doors and windows, aluminum alloy doors and windows have the following advantages:
1) Light weight and high strength. The density is only 1/3 of the steel.
2) Good sealing performance. Sealing performance directly affects the use of doors and windows and energy consumption. Sealing performance includes airtightness, watertightness, heat insulation and sound insulation.
3) Good durability, easy to use and maintain. Aluminum alloy doors and windows do not rust, do not fade, do not fall off, almost no maintenance, spare parts life is very long.
4) Elegant decorative effect. Aluminum alloy doors and windows have an artificial oxide film on the surface and are colored to form a composite film. This composite film is not only corrosion-resistant and wear-resistant, but also has a certain degree of fire resistance, and its gloss is extremely high. Aluminum alloy doors and windows are light and light, and the processing and assembly are precise and accurate. Therefore, the doors and windows can be opened and closed lightly and flexibly without noise.
Look for materials: aluminum profiles used for high quality aluminum alloy doors and windows, thickness, strength and oxide film, etc., shall comply with the relevant national standards, wall thickness should be above 1.2 mm, tensile strength reaches 157 Newton per square meter, yield The strength should reach 108 Newtons per square millimeter and the thickness of the oxide film should reach 10 microns. If it fails to meet the above criteria, inferior aluminum alloy doors and windows cannot be used.
Look at the processing: high quality aluminum alloy doors and windows, fine processing, installation stress, good sealing performance, switch freely. Inferior quality aluminum alloy doors and windows, blind selection of aluminum profiles and specifications, rough processing, and saw cutting instead of milling, not installed as required, poor sealing performance, switches are not comfortable, not only leakage of air leakage and glass burst phenomenon, but also To strong winds and external forces, it is easy to scrape or drop the push-pull part or the glass, destroying things and hurting people.
Look at the price: Under normal circumstances, high-quality aluminum alloy doors and windows due to high production costs, the price is about 30% higher than inferior aluminum alloy doors and windows. Some aluminum alloy doors and windows made of aluminum profiles with a wall thickness of only 0.6-0.8 mm have much lower tensile strength and yield strength than the relevant national standards and are not safe to use.
In addition, it is best to use the products of regular aluminum alloy door and window manufacturers. Products that are not processed according to the standard are not easily reachable.
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