A lot of goods are high and low end of the points, aluminum doors and windows are no exception, so they are in quality, there is a big difference. So, how to choose high-end aluminum doors and windows, Jiaxin Aluminum here and we talk about high-end aluminum doors and windows of some purchase criteria, hoping to help consumers better understand the skills on the purchase, so you can easily pick High-end aluminum doors and windows.
First, the quality of the surface of aluminum alloy doors and windows products will affect the appearance
Aluminum alloy doors and windows of the quality of the merits of the surface, it will directly affect the overall installation effect, so when buying, need to pay attention to several aspects, doors and windows decorated surface can not be damaged, protective film can not be scratched Scratches on the traces. Doors and windows on the adjacent components of the colored surface, can not have a very significant color. Can not have aluminum scrap, burrs, oil spots or stains, etc., the assembly of the connection can not have spilled adhesive.
Second, the smaller the product size, the better the deviation
Aluminum alloy doors and windows products will be the size of the deviation of the qualified range, the natural minimum is the best. Beyond the scope of the outside, are all substandard products.
Third, the material needs to meet a few conditions
       1, the thickness will be based on the size of the window hole and the local wind pressure to decide, and closed the balcony of the aluminum alloy sliding window, it can not be less than a certain range.
       2, the strength of hand bending the profile, let go, you can restore the best.
       3, flatness, the need to check the aluminum alloy surface has no depression or bulging situation.
       4, the oxidation degree of oxide film thickness to reach 10 microns.

5, when buying, profile to gently look at the surface to see if you can erase.