Product display six
System doors and windows are an organic combination of performance systems. A series of important functions such as water tightness, air tightness, wind pressure resistance, mechanical strength, heat insulation, sound insulation, anti-theft, sunshade, weather resistance, and operating feel need to be comprehensively considered based on climate change. The comprehensive results of the performance of equipment, profiles, accessories, glass, adhesives, and seals must also be considered. Each one is indispensable, ultimately forming an all-weather system door and window with high weather resistance.
In the late 1980s, China's system doors and windows began to slowly take off. Until the late 1990s, European system doors and windows entered the Chinese market, bringing greater upgrades to the Chinese door and window industry. Although great progress has been made during this period, there is still a big gap compared with developed countries. From the perspective of the system door and window market, the representative brands of foreign system doors and windows mainly include Germany's Schüco, Wekner and Japan's ykk doors and windows, while the representative brands of Chinese system doors and windows mainly include Sheting Doors and Windows, Ouzhe, Godley Doors and Windows, Beklow, etc.
System doors and windows use the system integration way of thinking, based on door and window systems developed according to different regional climate environments and functional requirements. They are designed, manufactured and installed in accordance with strict procedures to achieve high reliability and cost-effective building doors and windows. System doors and windows are a certain orderly collection composed of multiple elements, multiple subsystems interacting and interdependent.
Most people think that when buying high-quality doors and windows, they only need to pay attention to the quality of obvious parts of doors and windows such as aluminum, glass, accessories, etc. They do not understand some professional performance requirements of doors and windows at all, and pay more attention to factors such as product quality and cost-effectiveness. In the initial consumer ideology, high-quality doors and windows are equal to high-performance doors and windows.
High-quality doors and windows = high-quality profiles + glass + accessory strips + processing technology + installation technology +…
High-performance doors and windows = high-performance profiles × glass × accessory strips × processing technology × installation technology ×…
So: high-quality doors and windows ≠ high-performance doors and windows
With the continuous improvement of the quality of life, people have clear requirements for the quality and performance of residential buildings. More and more attention is paid to the energy-saving performance, safety performance, sound insulation and noise reduction, sun protection, comfort and durability of building doors and windows. When purchasing building door and window products, in addition to paying attention to the quality of obvious parts of doors and windows such as aluminum, glass, accessories, etc., more attention is paid to the realization of a comprehensive performance after the combination of these door and window components.
System doors and windows have gradually become the first choice for windows in many high-end buildings. However, experts also pointed out that the quality of aluminum alloy door and window products on the current market is uneven, and you must be careful when purchasing. Inferior aluminum alloy doors and windows blindly select aluminum profile series and specifications, are shoddily processed, use sawing instead of milling, are not installed as required, have poor sealing performance, and cannot open and close freely. Not only do they leak air and rain and cause glass to burst, but also when encountering strong winds and external forces, the sliding parts or glass can easily be scraped or knocked down, causing damage to property and injury to people. The thickness, strength and oxide film of aluminum profiles used in high-quality aluminum alloy doors and windows should comply with relevant national standards. The wall thickness should be more than 1.4 mm (the new 8478 national standard recommends that the wall thickness of exterior windows be greater than or equal to 1.8 mm). The tensile strength should reach 157 Newtons per square millimeter, the yield strength should reach 108 Newtons per square millimeter, and the oxide film thickness should reach 10 microns. If it does not meet the above standards, it is an inferior quality aluminum alloy door and window and cannot be used.