The profiles of doors and windows are divided into many brands, why the price of aluminum is so different, of course, it also has a lot to do with quality, some aluminum is primary aluminum, texture, hardness, and surface spray paint, let people touch, the feeling is different.
And some aluminum materials are recycled miscellaneous aluminum, the performance is not so stable, so the safety structure of the doors and windows is not too strong, although the whole use function of doors and windows is composed of profiles, glass, processing, installation, accessories and other five main parts, but aluminum accounts for 30% of the whole doors and windows, only if every link is well controlled, can we produce high-quality energy-saving system household doors and windows.
After good surface treatment, high-quality thermal insulation broken bridge aluminum profiles have good atmospheric corrosion resistance, no fear of moisture, no fear of sunlight, no deformation at high temperature, no embrittlement at low temperature, no combustion, no aging, lightning protection, long-lasting stability, suitable for all kinds of climatic environment.
The quality of profiles directly determines the quality of doors and windows. Doors and windows produced by inferior profiles have low strength and are easy to change color and deform.
Profile materials mainly include:
The thickness, strength and oxide film of aluminum profiles used for high-quality aluminum alloy doors and windows should meet the relevant national standards, the wall thickness should be above 1.4mm, the tensile strength should reach 157N per square millimeter, the yield strength should reach 108N per square millimeter, and the oxide film thickness should reach 10 microns.
So, as an ordinary owner, how to identify the profile quality of doors and windows, first of all, the brand, price, and then look more and ask more, can also weigh the weight, the same window, the rice weight of high-quality aluminum is not the same, look at the color, and feel, high-quality aluminum smooth texture, uniform color, good luster, take to smell, there is no smell, profile surface smooth, good hardness.
