Attention Should Be Paid To Aluminum Alloy

It is not uncommon for aluminum alloy materials to experience deformation of doors and windows, as well as inability to push or pull. Consumers should pay attention to the following points when making purchases:
Look at the material. There are six main aspects to consider when it comes to material selection:
1. Thickness: There are two types of aluminum alloy sliding doors: 70 series and 90 series. The 70 series can be used for aluminum alloy sliding doors inside residential buildings. The series number represents the millimeters of thickness and structural dimensions of the door frame. There are four types of aluminum alloy sliding windows: 55 series, 60 series, 70 series, and 90 series. The selection of the series should be based on the size of the window opening and the local wind pressure value. Aluminum alloy sliding windows used for enclosed balconies should not be less than 70 series.
2. Strength: The tensile strength should reach 157 Newtons per square millimeter, and the yield strength should reach 108 Newtons per square millimeter. When making a purchase, the profile can be moderately bent by hand and should be able to return to its original state after releasing it.
Color: The color of the same aluminum alloy profile should be consistent. If the color difference is obvious, it is not suitable for purchase.
4. Flatness: Check the surface of the aluminum alloy profile for any dents or bulges.
5. Glossiness: Aluminum alloy doors and windows should avoid selecting profiles with open bubbles (white spots) and slag (black spots) on the surface, as well as obvious defects such as cracks, burrs, peeling, etc.
Oxidation degree: The thickness of the oxide film should reach 10 microns. When making a purchase, you can lightly scratch the surface of the profile to see if the oxide film on its surface can be wiped off