When consumers buy aluminum alloy doors, how can they buy satisfactory aluminum alloy doors? Good and bad aluminum alloy door, look at these three points is enough.
1. See if the appearance is fine. High quality aluminum alloy doors and windows are finely processed. From the appearance, the protective film on the surface has no scratch, scratch marks, aluminum chips, burr, oil spots or other stains, there is no obvious color difference between adjacent components, there is no overflow adhesive at the assembly joint, and the size deviation of door and window frame is very small. Poor quality aluminum alloy doors and windows processing rough, cutting with saw processing, the work is not fine.
2. See if the material meets the standard. The thickness, strength and oxide film of aluminum profiles used for high-quality aluminum alloy doors and windows shall comply with relevant national standards: the wall thickness shall be more than 1.2 mm, the tensile strength shall be 157 n / m2, the yield strength shall be 108 n / m2, and the oxide film thickness shall be 10 μ M. If not up to the above standards, it is poor quality aluminum alloy doors and windows. The wall thickness of some aluminum alloy doors and windows on the market is only 0.6? 0.8 mm, which is very unsafe to use and should be noted.
3. Observe whether the manufacturer is normal. There are many self-employed and small factories processing aluminum alloy doors and windows. Sometimes they use provocative aluminum profiles. Sometimes the structure of doors and windows is not reasonable. The hidden danger of safety is great, and it is easy to break down. Therefore, it is better to choose the products of regular manufacturers. Regular manufacturers have production license, the obvious parts of the products are marked, such as factory name, trademark, product name, model, date of production, etc.