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. However, they do not understand some professional performance requirements of doors and windows at all, and they pay more attention to factors such as product quality and cost-effectiveness. , the initial consumer ideology believed that high-quality doors and windows equal high-performance doors and windows.

High-quality doors and windows = high-quality profiles + glass + accessory strips + processing technology + installation technology +…

Nowadays, 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 When 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.

Real system doors and windows are a perfect organic combination of performance systems, which need to consider a series of important factors such as water tightness, air tightness, wind pressure resistance, mechanical strength, heat insulation, sound insulation, anti-theft, sunshade, weather resistance, operating feel, etc. In addition to functions, we must also consider the comprehensive performance of equipment, profiles, accessories, glass, adhesives, and seals. Each one is indispensable, ultimately forming high-performance system doors and windows.

At present, in the building materials market, the use of high-end broken bridge partition aluminum alloy doors and windows has gradually become the first choice for many high-end building windows. 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 selecting aluminum profile series and specifications, shoddy processing, using sawing instead of milling, not installed as required, poor sealing performance, uneasy opening and closing, not only air leakage, rain leakage and glass bursting, but also When exposed to strong winds and external forces, the sliding parts or glass can easily be scraped or knocked off, 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 1.2 mm, the tensile strength should reach 157 Newtons per square meter, and the yield strength should reach 108 Newtons per square millimeter, 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.

Why does China need to introduce European high-performance system doors and windows?

Since the modern building doors and windows industry started in the early 1980s, it has experienced nearly 30 years of market baptism and evolution. Ordinary doors and windows with poor performance have always dominated the Chinese market. The upgrading of China's door and window technology has been relatively slow. Building doors and windows have become the mainstay of Chinese architecture. The major energy consumers in China will also be the major energy savers in the future!

As early as the 1980s, Europe developed high-performance system doors and windows, whose energy-saving performance, safety performance, comfort, etc. far exceed ordinary doors and windows. The European door and window standards in 2003 required that the K value should not be greater than 1.4. High-performance system doors and windows have become more popular. The current market application has reached 70% of the total doors and windows. The average K value of doors and windows in my country is about 3.5 (insulation). The current highest standard - the Beijing door and window standard is K value 2.8, which is only the European 1984 K value standard for doors and windows. According to calculations, based on my country's existing urban construction area of ​​about 43 billion square meters, if the current European door and window standard K value is implemented, 430 million tons of standard coal can be saved every year, which is about 20% of China's annual coal production. The amount is quite astonishing.

European system doors and windows entered the Chinese market in the late 1990s. Now the K value standard of European high-performance system doors and windows can reach 0.8, and its energy consumption is basically only 1/4 of the energy consumption of my country's building doors and windows.

"Low carbon" was the theme of the World Climate Conference in Copenhagen at the end of 2009. At the meeting, various countries launched their own energy conservation and emission reduction goals. China promised that by 2020, my country's carbon dioxide emissions per unit of GDP will fall by 40%-45% compared with 2005, and As a binding indicator, it should be included in the medium and long-term planning of national economic and social development. This means that our country must take practical energy-saving measures in various economic fields of society to achieve the predetermined goals. At present, building energy consumption accounts for 40% of the total energy consumption of my country's society; while the energy consumption of doors and windows accounts for 45% to 50% of the building energy consumption and 15% to 20% of the total social energy consumption. It can be seen that doors and windows are the main cause of building energy loss, and the replacement of energy-saving doors and windows in buildings will be the general trend.

Therefore, we must improve the thermal insulation effect of doors and windows in all aspects and guide everyone to use high-quality energy-saving doors and windows. While my country's door and window technology has not yet reached a high level, European high-performance system doors and windows have become the first choice for energy-saving doors and windows in China!