Mistakes in purchasing aluminum alloy doors and windows
Emphasis on beauty
We only pay attention to the variety of flowers and colors, but not the internal quality. The double-layer insulating glass and three-layer laminated glass are better than ordinary glass. For the thickness of the oxide film, it should be 10 microns. It can be scratched on the surface of the glass profile to see whether the oxide film on the surface can be wiped off. If it can be wiped off, it is good.
The wall thickness of aluminum profile of doors and windows should be no less than 1.2mm. The thickness of aluminum alloy door and window profiles varies from 0.8 mm to 1.2 mm, and some are even more than 1.2 mm. Among them, the aluminum alloy door with a thickness of more than 1.2 mm has better strength and will not deform for 5-8 years under the premise of normal use. In addition, the thin wall is also a waste of resources, the price will be much higher.
Hardware accessories are not supporting roles, but the heart of doors and windows. In the materials of aluminum alloy door and window accessories, it is recommended to use die-casting zinc alloy for handle and transmission parts, aluminum alloy for hinge, stainless steel for hinge shaft and lock point, zinc alloy or stainless steel for lock seat, etc. the quality of pulley is determined by the quality of its outer wheel and bearing. Glass fiber pulley contains roller bearing, push-pull smooth, wear-resistant and durable, box type closed The structure can effectively prevent dust, and two anti jump devices ensure the safety and reliability of sliding.
Generally, regular manufacturers have production license, and the obvious parts of the products will be marked with product marks, such as whether there is a factory name, "QS" logo, product name and date of manufacture. When choosing doors and windows, you should first pay attention to the identification of signs. At the same time, you can also ask the shopping guide to show the production license and some certificates of the brand.