The market of aluminum windows and doors is growing, and aluminum windows and doors are used in a lot of architectures, so that how to identify the quality of aluminum alloy materials has become essential knowledge for consumers. How to determine the merits of aluminium doors and windows? Either interior aluminum doors or aluminum windows, renovation owners must be aware of the following points in the purchase of aluminum windows and doors:
1. Identifying mark
Formal or manufacturers with production license will mark product signs on the significant parts of aluminum products, including: manufacturer's name or trademark, product name, product type or mark, manufacturing date or number. There should have obvious "Moisture Proof", "Handle with Care" and "upward" message and logo on the packaging box.
2. Surface quality
1) Doors and windows decorative surface should not have significant damage; it refers that the protective film on the surface of doors and windows should not have scratch marks.
2) Colored surfaces of adjacent components on the doors and windows should have no obvious color difference.
3) Aluminum windows and doors should have no debris, burrs, oil spots or other stains on the surface, there should be no spillover adhesives at assembly junction.
3. Size deviation
Aluminum door frames should better have a minimum size deviation.
4. Aluminum windows and doors components
Aluminum windows and doors components should be firmly connected, corrosion resistance filling materials are needed to make the connection part sealed, waterproof.
5. See materials. There are six areas for reference for the selection of materials:
1) Thickness: aluminium sliding doors are available for 70 series and 90 series two kinds, residential interior aluminum sliding door can use 70 series. Series number indicates the number of frames thickness and structure size. Aluminum sliding window is available for 55 series, 60 series, 70 series and 90 series four kinds. Series selection should be based on the size of the window opening and local pressure value. Aluminum sliding windows used for enclosed balcony should not be less than 70 series.
2) Strength: Tensile strength should reach 157 Newtons per square millimeter, the yield strength should reach 108 Newtons per square millimeter. When you purchase aluminum windows and doors, you can moderately curve the profiles by hands, which should be able to recover shape after you let it go.
3) Chroma: the color of the same aluminum alloy profile should be consistent, if the color difference is obviously, do not buy.
4)Flatness: Check the surface of aluminum profiles, there should be no sag or bulge.
5) Gloss: aluminum doors and windows should avoid open bubble (white dots) and ash (black spots), as well as cracks, burrs, peeling and other obvious defects.
6) Degree of oxidation: the oxide film thickness should reach 10 microns. When you purchase aluminum windows and doors, you can scratch gently on the profile surface, see if the oxide film on the surface can be wiped.
1. Identifying mark
Formal or manufacturers with production license will mark product signs on the significant parts of aluminum products, including: manufacturer's name or trademark, product name, product type or mark, manufacturing date or number. There should have obvious "Moisture Proof", "Handle with Care" and "upward" message and logo on the packaging box.
2. Surface quality
1) Doors and windows decorative surface should not have significant damage; it refers that the protective film on the surface of doors and windows should not have scratch marks.
2) Colored surfaces of adjacent components on the doors and windows should have no obvious color difference.
3) Aluminum windows and doors should have no debris, burrs, oil spots or other stains on the surface, there should be no spillover adhesives at assembly junction.
3. Size deviation
Aluminum door frames should better have a minimum size deviation.
4. Aluminum windows and doors components
Aluminum windows and doors components should be firmly connected, corrosion resistance filling materials are needed to make the connection part sealed, waterproof.
5. See materials. There are six areas for reference for the selection of materials:
1) Thickness: aluminium sliding doors are available for 70 series and 90 series two kinds, residential interior aluminum sliding door can use 70 series. Series number indicates the number of frames thickness and structure size. Aluminum sliding window is available for 55 series, 60 series, 70 series and 90 series four kinds. Series selection should be based on the size of the window opening and local pressure value. Aluminum sliding windows used for enclosed balcony should not be less than 70 series.
2) Strength: Tensile strength should reach 157 Newtons per square millimeter, the yield strength should reach 108 Newtons per square millimeter. When you purchase aluminum windows and doors, you can moderately curve the profiles by hands, which should be able to recover shape after you let it go.
3) Chroma: the color of the same aluminum alloy profile should be consistent, if the color difference is obviously, do not buy.
4)Flatness: Check the surface of aluminum profiles, there should be no sag or bulge.
5) Gloss: aluminum doors and windows should avoid open bubble (white dots) and ash (black spots), as well as cracks, burrs, peeling and other obvious defects.
6) Degree of oxidation: the oxide film thickness should reach 10 microns. When you purchase aluminum windows and doors, you can scratch gently on the profile surface, see if the oxide film on the surface can be wiped.