What is the quality standard aluminum alloy doors and windows?
Second look processing
Quality aluminum windows and doors, fine processing, installation stress, good sealing performance, switch freely. Poor quality of aluminum windows and doors, aluminum series of blind selection and specification, process shoddy, to sawing instead of milling is not required for installation, sealing performance is poor, do not switch freely, not only leaking air leakage and the emergence of the phenomenon of glass burst, and the case to strong winds and an external force, the push and pull part or glass easily scraped off or touch down, wounding and breaking things.
First look at the materials used
High quality aluminum alloy doors and windows with aluminum, thickness, strength, and oxide film, should be consistent with the provisions of the relevant national standards, the aluminum windows main force bar wall thickness should be 1.4 mm or more, aluminum doors main force bar wall thickness should be 2.0 mm or more, the tensile strength of 157 Newtons per square meter mm, the yield strength to reach 108 Newtons per square millimeter, the thickness of the oxide film should reach 10 microns. If you can not reach the above criteria, it is of poor quality aluminum windows and doors, can not be used.
Third, look at the price
In general, high-quality aluminum windows and doors due to high production costs, the price is higher than the low-grade aluminum windows and doors to about 30%. Some only have a wall thickness of 0.6-0.8 mm aluminum production of aluminum windows and doors, tensile strength and yield strength is much lower than the relevant national standards, the use of very safe. In addition, there are more self-employed processing aluminum doors and windows, they do not know the structural characteristics and properties of aluminum windows and doors. In order to reduce the cost of cutting corners, shoddy, greater product risks, generally should not be used. The best selection of regular aluminum windows and doors manufacturer of the product. Here we must point out: the current national standard profile thickness of 1.4mm, if the supplier selection is 1.2mm or 1.0mm wall thickness even thinner material, then, are of substandard products, please have your purchase Note.
