Plastic steel doors and windows with its excellent performance and beautiful appearance gradually become the new favorite decorations. However, steel doors and windows are still a new type of building materials in China after all, and most people are still unfamiliar with it. So, how to identify the quality of steel doors and windows?
First of all, it must be made clear that plastic steel doors and windows, like other building materials, have high, medium and low grades, as well as high quality and inferior quality, and cannot be confused. The difference between the quality and grade of steel doors and windows is mainly divided into the following steps:
The first step is to first understand the UPVC profiles selected for the steel doors and windows. UPVC profile is a decisive factor in the quality and grade of plastic steel doors and windows. A good UPVC profile should be a reasonable design of multi-cavity, wall thickness, formula containing anti-aging, anti-ultraviolet auxiliaries, from the appearance of the surface should be smooth, color white .
Specially to remind everyone that there are many people think that plastic windows are the same white, in fact, otherwise, high-grade UPVC profiles should be white in the pan-blue, such color anti-aging properties, outdoor wind and sun in the third five Ten years will not be aging, discoloration, deformation. The middle and low-grade profiles are white and yellow. This color has poor sun protection. After a few years of use, it will become yellow even after aging, deformation, and brittle fracture. The reason is that the profile formula contains too much calcium. Everyone has been widely used in the past few years, but nowadays it has become clearer in the calcium plastic window. Therefore, we must carefully choose UPVC profiles, manufacturers can ask for different sections of profiles to compare together, you can see at a glance. At present, the domestic best profile brands include Beixin New Plastic, Vicat, and Kemei Order.
The second step is to look at the hardware selected for the doors and windows. The hardware of high-end doors and windows is made of metal. Its inherent strength, appearance and usability directly affect the performance of doors and windows. Many middle and low-grade steels use plastic hardware, and their quality and longevity have great hidden dangers.
The third step is to look at the quality of the assembly of doors and windows, mainly to see whether the appearance of smooth and non-destructive, whether the welding corner clean and tidy, whether the hardware is aligned, with or without steel lining and so on.
The most important point is, we must check whether the production license issued by the construction company of the door and window manufacturers. Do not try to be cheap and use plastic windows made by street-shops. The quality and reputation of these windows cannot be guaranteed.
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