1. Aluminum
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 cost of broken bridge aluminum doors and windows of the brand, the price is about 400 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.
At present, in broken bridge aluminum doors and windows engineering examples, there are many enterprises using aluminum profiles with different wall thickness, especially those with less than 1.4mm wall thickness, as insulation broken bridge aluminum profiles.
This kind of "hiding from the world and crossing the Sea" has strong concealment, broken bridge aluminum doors and windows the project owner can only identify the profile before it has been processed.
2. 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.
3. Opportunistic, secretly changing the composition materials
After fully studying and grasping the large performance differences among PVC insulation strips, domestic nylon insulation strips and imported Nylon 66 insulation strips, some broken bridge aluminum doors and windows enterprises have 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.
However, no matter how they are changed, they are not broken bridge aluminum doors and windows, but selling a consumer at a price of broken bridge aluminum doors and windows means cheating.
4. Hardware is very cheap. I suggest you not to buy it
Making a set of broken bridge aluminum requires a lot of hardware accessories, especially opening windows, with handles and two paddles. Many people are thinking about the price of pressing hardware accessories. Although hardware is not impressive, but it is used every day. You can only buy cheap goods when saving money.
The life span of inferior hardware accessories is usually only 2-3 years. If you want to use it for 10 years, you still need to buy well-known accessories of big brands. The money of hardware cannot be saved.
5. The quality of sealing strip is good or bad
It is also a sealing strip. It seems that there is no difference, but the price varies greatly. Select the sealing strip, not too soft, easy to break, good sealing strip has toughness, will not absorb water.
6. Choose good foaming agent
Window leakage does not leak, which has a lot to do with construction technology and filling materials. The inferior foaming agent used in some windows may not leak in those years. If the foaming agent ages and cracks for a long time, it will cause water leakage.
Good foaming agent will not sag when pressed, and it cannot be broken off. The cost difference of foaming agent will be about 20 yuan/square meter.
7. Cost analysis of broken bridge aluminum
Generally, the price of broken bridge aluminum doors and windows is not only the above-mentioned profiles and heat insulation strips, but also the number of open windows, the shape of windows, hardware accessories, disposable silverware set, etc.
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.
Pay attention to the above points when purchasing.
