Aluminum profile:
At present, in the uneven broken bridge aluminum doors and windows market, conscientious merchants insist on using primary aluminum as doors and windows, and some unscrupulous merchants use aluminum containing impurities as doors and windows. It may be difficult for us to distinguish it with the naked eye, but generally speaking, the products of big manufacturers and brands are all pure aluminum ingots, so you can rest assured that the sections of doors and windows of primary aluminum are silvery white, and the surface is even without impurities and will not be black. Of course, the key to determine the quality of the broken bridge aluminum profile is not entirely whether it is primary aluminum or recycled aluminum, but also the wall thickness of the aluminum profile. The wall thickness of broken aluminum doors and windows should be above 1.4 mm, and the brand aluminum should be above 1.4 mm, so it is more reassuring to choose brand aluminum.
Door and window hardware:
Hardware is the heart of doors and windows, and it is also one of the reasons for the large price difference between broken aluminum doors and windows. The cost of door and window hardware will account for 15% to 25% of the whole door and window, and its quality directly affects the quality, safety and daily use experience of doors and windows. If possible, it is recommended to choose hardware accessories of domestic brands or imported brands. Although it is expensive, it can be used for decades, and you will not be disappointed when you open it.
Insulation strip:
Heat insulation strip is the key to breaking aluminum doors and windows. With it, aluminum profiles can be separated and heat insulation can be realized. PA66 nylon insulation strip is the best insulation strip on the market, and some small manufacturers will use PVC insulation strip as inferior products. Although it is forbidden, it is hard to say whether the small workshop will do it again. (If you don't understand the insulation strip, find a regular door and window manufacturer or burn it with a lighter. )
Glass configuration:
Glass occupies more than 70% of the window area, so if you want to have energy-saving, safety, sound insulation and other effects, the choice of glass is particularly important. Appropriate glass thickness should be selected according to the size of the window. When choosing glass, we must toughen the glass and look for CCC certification standards. Three layers of glass can be considered if conditions permit in the north, and the insulation effect will be better.
In short, as long as you look for the above four points when buying broken-bridge aluminum doors and windows, your broken-bridge aluminum doors and windows are not bad, and you won't choose brand aluminum, brand hardware, PA66 nylon insulation strip and tempered glass.