As we all know, doors and windows are one of the indispensable items of decoration, so the development of aluminum alloy doors and windows is getting better and better. Therefore, at present, aluminum alloy doors and windows have entered thousands of households. With the enhancement of people's aesthetic and health awareness, we will consider a lot when choosing aluminum alloy doors and windows. Among the various types of windows, which window is better? Perhaps it is because it is so popular, so the aluminum alloy doors and windows industry has a lot of mixed inferior products, so it needs to be well identified by consumers.
1、 How to distinguish the quality of aluminum alloy doors and windows
The thickness, strength and oxide film of aluminum profiles used for high-quality aluminum alloy doors and windows should be suitable for relevant national regulations. The wall thickness of the key stress-bearing bars of aluminum alloy windows should be more than 1.4 mm, the wall thickness of key stress bars of aluminum alloy doors should be more than 2.0 mm, the tensile strength should reach 157 n / m2, the yield strength should reach 108 n / m2, and the oxide film thickness should be up to 108 n / m2 Degrees should reach 10 microns. If can't reach above criterion, it is inferior aluminium alloy door and window, cannot use. Second, look at the production license
2、 Look at the production license
ZhengTu or aluminum alloy door and window manufacturers with production license shall mark the product symbol on the obvious parts of their aluminum alloy products, including: name or signboard of the manufacturer, product title, product model or mark, production date or number. There should be obvious words and symbols of "moisture proof", "handle with care" and "upward" on the packing case. The connection of aluminum alloy door and window components should be stable, and corrosion-resistant filling materials should be used to seal and waterproof the connection department. Look at the quality inspection certificate. Aowei doors and windows think that the selection of aluminum alloy doors and windows must ask for product quality inspection certificate from the dealer. If the inspection items in the certificate or inspection report contain lead, it is proved that the product is PVC profile.
3、 Look at the aluminum alloy doors and windows to show the quality
The surface quality of aluminum alloy doors and windows directly affects the dressing effect of all walls after installation. Therefore, the binding surface of aluminum alloy doors and windows should not be obviously damaged, the coloring surface of adjacent components should not have obvious color difference, aluminum chips, burrs, oil spots or other stains, and there should be no adhesive overflow at the joint.
4、 Look at the color of the product
The color of toxic aluminum alloy doors and windows is white. Although white, it gives people an intuitive feeling of "Leng", that is, it is dark or blue in white, with a strong sense of smoothness. After using for a period of time, it gradually turns gray black due to sulfur and sulfide pollution in the atmosphere. The color of non-toxic aluminum alloy doors and windows is pure, like ivory white. It is crystal clear and soft. It has the feeling of penetrating into the door. It will not be gray black when polluted by sulfur and sulfide in the atmosphere.
5、 Look at the seal
The contact between the sealing strip of aluminum alloy doors and windows and glass and the glass groove shall be flat, without edge curling and groove shedding. When the door and window are half closed, there is no obvious crack between the fan and the frame, and the sealing strip on the sealing surface shall be in the contraction shape.
6、 Look at the package label
Look at the product name, executive standard, factory name, address, quality grade, etc. marked on the package or label of aluminum alloy doors and windows. For example, whether the basic content is complete and whether there is duplication or deviation in the color of text or pattern. If the content of the package label is not complete, and there is duplication or deviation in the text or pattern overprint, it must be produced by a small profile enterprise, and it is better not to buy it.