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There are 70 series and 90 series aluminum alloy sliding doors. The 70 series aluminum alloy sliding door inside the house can be used. The series number indicates the thickness of the door frame thickness in millimeters. Aluminum alloy sliding window has 55 series, 60 series, 70 series, 90 series four. The series selection should be based on the size of the window hole and the local wind pressure value. Aluminum sliding windows used as closed balconies should not be smaller than the 70 series.
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Aluminum alloy doors and windows deformed, push-pull and other phenomena are not uncommon. Consumers should pay attention when shopping.
First, the identification of the logo
Manufacturers who have formal or production licenses are required to indicate the product's mark in the obvious parts of their aluminum alloy products, including: manufacturer's name or trademark, product name, product model or mark, manufacturing date or serial number. There should be obvious “moisture proof†and “carefully light†and “upward†words and signs on the packing box.
Second, the surface quality
The quality of the surface quality of doors and windows directly affects the decorative effect of the entire wall after installation. When checking the surface quality of doors and windows, pay attention to the following aspects:
A. The decorative surface of doors and windows should not have obvious damage. It means that the protective film on the surface of windows and doors should not have scratches and scratches.
B. The coloring surface of the adjacent member on the door and window should not have obvious color difference.
C. There should be no aluminum chips, burrs, oil spots or other stains on the surface of doors and windows, and there should be no spilled adhesive at the assembly joints.
Third, the size of the deviation
Aluminum alloy door and window frame size deviation is the best.
Fourth, aluminum alloy door and window member
The connection of the aluminum alloy door and window components should be firm, and the connection part should be sealed and waterproofed with a corrosion-resistant filler material.
Fifth, look at the material
There are six main aspects in the materials used for reference:
1. Thickness: There are 70 series and 90 series aluminum alloy sliding doors. The aluminum alloy sliding door inside the house can use 70 series. The series number indicates the thickness of the door frame thickness in millimeters. Aluminum alloy sliding window has 55 series, 60 series, 70 series, 90 series four. The series selection should be based on the size of the window hole and the local wind pressure value. Aluminum sliding windows used as closed balconies should not be smaller than the 70 series.
2. Strength: Tensile strength shall be 157 Newtons per square meter and the yield strength shall be 108 Newtons per square millimeter. When you buy, you can use your hands to bend the profile moderately, and you should be able to recover after loosening your hands.
3. Color: The same aluminum alloy color should be the same, such as the color difference is obvious, that is not suitable for purchase.
4. Flatness: Check the surface of the aluminum alloy profile, there should be no depression or bulging.
5. Gloss: aluminum alloy doors and windows to avoid the purchase of surface bubbles (white spots) and ash (black spots), as well as cracks, burrs, peeling and other obvious defects in the profile.
6. Degree of oxidation: The thickness of the oxide film should reach 10 microns. When you purchase, you can lightly stroke the surface of the profile to see if the oxide film on the surface can be wiped off.
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