First look at the performance of doors and windows
Aluminum alloy doors and windows usually assess the following main properties: strength, air tightness, water tightness, opening and closing force, sound insulation, heat insulation, durability of nylon guide wheels, durability of opening and closing, etc.
Second look at the appearance of doors and windows
The appearance of doors and windows is also a key link. The aluminum alloy doors and windows have an artificial oxide film and are colored to form a composite film layer. This composite film is not only resistant to corrosion and wear, but also has a certain fireproof function, and the gloss is extremely high. To try to compare as much as possible, try to choose the products of the aluminum alloy doors and windows manufacturers of the right track, and choose the products that are fine, precise, open and closed, sensitive, noise-free, and elegant in decoration.
Third look at the price of doors and windows
Under normal conditions, high-quality aluminum alloy doors and windows are about 30% higher than the inferior aluminum alloy doors and windows due to the high cost of consumption. 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 flexural strength than the national norms. The application is very unsafe, and must not ignore the safety factor of itself due to the greed of cheapness. .
First look at the information on doors and windows
The aluminum profiles, thickness, strength and oxide film used in high-quality aluminum alloy doors and windows are in line with the relevant national regulations. The wall thickness should be above 1.2mm and the thickness of the oxide film should reach 10 microns. If you go beyond the national norms, and even reach the European norm products, of course, is the best choice.
Fourth, look at the processing of doors and windows
High-quality aluminum alloy doors and windows, precise processing, sophisticated equipment, good sealing performance, switch freely. Inferior aluminum alloy doors and windows, data and specifications are not up to standard, and processing is also uneven, poor sealing performance, not only leaking wind and rain, but also in the case of strong winds and excessive external force, it is easy to appear glass bursting, etc. The glass is scraped or knocked down.
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