Nowadays, when everyone closes the balcony, many masters will recommend us to use broken bridge aluminum.
Doors and windows, this kind of doors and windows is cost-effective. However, due to the good sales volume of products, there will be some black-hearted merchants who fake or cut corners. Therefore, we are buying broken bridge aluminum doors and windows be careful when checking.
(Image Source: Guangdong today's official website of doors and windows, invasion and deletion)
i, broken bridge aluminum doors and windows how to Choose
1. Select the appropriate profile
the price of broken bridge aluminum is mainly distinguished by profiles. Some merchants in the market offer about 280-400 yuan/square meter for broken bridge aluminum, which is almost the same as the price of plastic steel windows. It must be that there is something wrong with the materials.
The price of plastic steel doors and windows of general brands is about 10000 yuan/ton, while the price of brand broken bridge aluminum is about 30000 yuan/ton. According to the brand broken bridge aluminum doors and windows the cost price is about 500 yuan. In addition, the price varies with the same broken bridge aluminum accessories.
For example, insulation strip, the price of nylon insulation strip is more expensive, while the price of PVC insulation strip is much cheaper, and the difference between insulation strip and one square meter can be 20 yuan.
If the owner only pays attention to the low price, the merchant may use inferior PVC insulation strip, which is not effective in heat insulation and noise isolation, so extra attention is needed.
2. Cost analysis of broken bridge aluminum
just so-so broken bridge aluminum doors and windows in addition to the above profiles and insulation strips, the number of open windows, the shape of windows, hardware accessories, disposable silverware set, etc. are also factors that affect the price.
In addition, we should also consider the premium of the brand and the installation technology and after-sales service ability of merchants. After all, the quality of big brands is better, and the installation and service of big merchants are better.
Finally, in view of the quality of some non-well-known brands in the market, the cost performance is higher than that of big brands. It is suggested that owners should clearly define their own positioning before purchasing, and choose quality or cost performance? According to the above analysis, to buy broken bridge aluminum, you must not blindly follow the merchant's recommend, so it is not easy to suffer losses.
2. Common broken bridge aluminum doors and windows cat greasy
1. Heat insulation strip
polyvinyl chloride (PVC) insulation strip (hereinafter referred to as PVC insulation strip), a common plastic of low-cost non-structural materials, is used by some merchants to replace glass fiber reinforced polyamide nylon (PA66), which has been widely used in Europe for decades. Insulation strip (hereinafter referred to as Nylon 66 insulation strip).
The insulation doors and windows made of the Broken Bridge aluminum profile after the PVC insulation strip is combined with strips will loosen or even completely break away from the broken bridge aluminum profile due to thermal expansion and contraction after actual installation and use, light causes the form to loosen and deform, thus damaging the air tightness and water tightness of doors and windows, while heavy causes the form to be loose and detached as a whole.
2. The wall thickness cannot be closed
currently in broken bridge aluminum doors and windows in engineering examples, there are many enterprises using aluminum profiles with different wall thickness, especially those with wall thickness less than 1.4mm, as insulation broken bridge aluminum profiles.
This kind of "hiding from the World" has strong concealment, broken bridge aluminum doors and windows the project owner can only identify the profile before it has been processed.
3. Process inspection fails
common door and window projects need to undergo strict national relevant performance testing agencies to carry out relevant performance testing, and the obtained testing report is used as the indicator of the performance testing report of finished doors and windows.
However, the test data of this raw material can only represent its material performance, and the performance of finished products produced after hot extrusion, cooling and other processing technologies will greatly change.
4. Opportunistic, secretly changing the composition materials
some broken bridge aluminum doors and windows after fully studying and grasping the large performance differences among PVC insulation strips, domestic nylon insulation strips and imported Nylon 66 insulation strips, the Enterprise adopted a compromise scheme that is both economical and relatively safe: window Frame aluminum profile adopts low quality and low price PVC or domestic nylon insulation strip, Casement aluminum profile adopts high quality imported Nylon 66 insulation strip.
But no matter how to change them, they are not broken bridge aluminum doors and windows, but broken bridge aluminum doors and windows selling a consumer at a price means cheating.
Although it is said that broken bridge aluminum doors and windows the quality is uneven, but after reading the introduction of the editor broken bridge aluminum doors and windows after the knowledge, you must pay attention to these problems. In addition, you must see these problems clearly when purchasing, and you must pay attention to relevant matters.
