At present, there are many kinds of doors and windows in the market. The quality of aluminum alloy doors and windows is quite different. What should consumers pay attention to when buying? The last article introduced the four key points of doors and windows. Today, I will teach you how to identify them, so as not to be "fooled". Here are a series of methods to identify the quality of doors and windows
Generally speaking, glass needs two layers of glue: one is used for bonding the glass to the frame, and the other is used for sealing between glass to isolate water vapor and air. However, some manufacturers only do a layer of sealing, which leads to the air leakage of the window soon after use, and the thermal insulation effect is greatly reduced. If the manufacturer does not have their own equipment, they can ask the manufacturer whether they need to have their own equipment power.
In the profile materials, calcium carbonate is relatively cheap, some small manufacturers will use a lot of calcium carbonate, resulting in the profiles are very brittle, easy to crack in cold weather, and even can be torn. Some profiles are too small and thin, which will reduce the stiffness and affect the wind pressure resistance. In the choice, consumers can use their hands to break off, to see how flexible.
The use of inferior hardware may result in poor switching within a year. The price difference of sealant strip can reach more than 10000 yuan per ton. The use of inferior products will lead to shrinkage, hardening and cracking of adhesive strips within one year. Some manufacturers do not even add reinforced steel bar in the profile, or the thickness of steel bar is insufficient, which will lead to the reduction of profile life. The thickness of reinforced section steel should not be less than 1.5mm when it is used to improve the wind pressure resistance of windows. After adding steel, the plastic window has a certain weight, which can be used as a judgment standard for consumers.
Shanghai liefan Decoration Material Co., Ltd. is specialized in aluminum alloy sliding window and aluminum alloy casement window , aluminum alloy bridge window, aluminum alloy louver, invisible anti-theft net, wood aluminum composite bridge break window, frameless balcony window, leisure sunshine room and supporting mosquito screen series and other high-quality home products professional manufacturers, set development, research, production, sales, installation, maintenance of six functions in one. Our factory independently develops all kinds of new heat insulation windows, hollow windows, frameless balcony windows and other fashionable home furnishing products, which have been sold well in many areas at home and abroad. We have undertaken the door and window engineering of large-scale factories and buildings in China, retail and installation projects in Shanghai urban area. Among them, the frameless balcony windows have been sold for eight years and are highly praised by the majority of users. With the leading technology, we have successfully launched new type of hollow windows and top hung windows of European and American aluminum alloy and met the requirements of foreign investors. The products are exported to Europe, America, Southeast Asia and Africa. With the development and production capacity, the products have become one of the preferred brands of consumers.