We want to buy the appropriate aluminum alloy window screening, nature can not be a pair of good or bad eye, but how can we identify the good or bad? Here I'll give you some:

1. First look at the thickness of aluminum alloy window screening: aluminum alloy window screen has 70 series, 90 series of two kinds of residential aluminum alloy window with a series of 70 can be. The number of millimeters in the construction of the thickness of the door frame. Aluminum alloy sliding window has 55 series, 60 series, the 70 series, the 90 series of four. According to the window size and selected a series of local wind pressure value set. Aluminum alloy sliding window for closed balcony shall not be less than 70 series.

2. The strength of aluminum alloy window screening: tensile strength should be 157 mm per square meter Newton, yield strength to reach every square millimeter of 108 Newton. When you buy, you can use hand bending section, let go of the original state should be able to.

3. Aluminum alloy window screen color: the same aluminum alloy color should be consistent, such as color difference is obvious, that is not suitable for shopping.

4. The smoothness of aluminum alloy window screening: check the surface of aluminum alloy profiles, should not sag or drum out.

5. Aluminum alloy window screen gloss: aluminum alloy screen to avoid the purchase of the surface of the bubble (white spots) and ash (black spots), as well as cracks, burrs, peeling and other obvious defects in profiles.

6. Oxidation degree of aluminum alloy window screen: the thickness of oxide film should reach 10 micron. Can be purchased in the surface of the profile under the light, to see whether the surface of the oxide film can be erased.