First of all, we must make it clear that steel doors and windows, like other building materials, have the same high, medium, and low grades, as well as the distinction between high quality and poor quality. Differentiate the quality of steel doors and windows
There are mainly several steps with the grade:
The first step is to understand the UPVC profiles selected for the steel doors and windows. UPVC profiles are the decisive factors for the quality and grade of plastic steel doors and windows. Good UPVC profiles should be designed with a multi-cavity wall thickness formula containing anti-aging and anti-ultraviolet additives. From the outside, it should be smooth and clean. In particular, I would like to remind everyone that many people think that plastic windows are all the same white, but they are not. High-grade UPVC profile color should be white in the pan-green color anti-aging performance is good, in the outdoor wind and sun will not aging, discoloration, deformation. The middle and low-grade profiles are white and yellowish. The color of sunscreen is poor. After a few years of use, the sun will become yellow even after aging. The reason for this is that the calcium content in the profile formula is too high for everyone to understand from the calcium plastic window that was used in the previous years and now becomes completely different. Therefore, you must carefully choose UPVC profiles can ask manufacturers to ask for different profiles section together to compare better and worse can be at a glance. At present, domestic profiles that are better include Conch, Vicat, and Ke Mei Ling. Among them, Conch Profile is the largest domestic production plant for profile production with a total investment of 670 million yuan. Full introduction of Germany and Austria. The latest equipment in the 90's adopts computer-controlled operations. The world's most advanced three-track crawler with the largest mixer in the world. A total of 72 extrusion lines produce an annual output of 10 tons of various profiles, which is one of the most well-known profile brands in China. The use of conch profiles made of plastic steel window is of excellent quality and durability. But nowadays, Shanghai Snails is full of sky-flying shapes and it is difficult to distinguish between true and false. When you select plastic steel windows produced by Conch Profiles, you first need to look at the colors and wall thicknesses, and then ask the manufacturers to show relevant conclusive materials for conch profiles, and then compare the prices. In general, the price of plastic steel windows with conch profiles is relatively high, generally more than 200 yuan per square meter.
The second step is to look at the hardware selected for the doors and windows. The importance of hardware for doors and windows, I do not think we all know very well. 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 plastic steel windows use plastic hardware for their quality and longevity.
The third step is to look at the quality of the assembly of doors and windows. Mainly whether the appearance is smooth and non-destructive. Whether the welding angle is neat and tidy, whether the sliding window is pushed or not, whether the window is opened freely, whether the doors and windows are sealed, and whether the hardware is completely filled with steel liner or not. The most important point is to check whether the manufacturer of the door and window has issued a production license. Never compromise on the quality and reputation of plastic windows produced by cheap street furniture.
Experience on doors and windows hardware door prices
Silicon Manganese,Manganese Silicon Cored Wire,Ferro Silicon Manganese,High Carbon Silicon Manganese
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