A. Quality articles
Here we introduce some points and common sense to identify the quality of plastic steel doors and windows, which can be used for reference when purchasing.
1. When purchasing, you must go to the formal home market and regular plastic steel doors and windows enterprises to buy, roadside shops and small workshops, its processing equipment is simple, low technical content, the accuracy and strength of doors and windows are not guaranteed.
2. The appearance color of plastic steel doors and windows is blue-white. If the color is too white or gray, it means that the stable components in the material are not enough, and it is easy to age and turn yellow.
3, check whether the hardware is flexible and smooth, the paint hardware depends on the surface finish and the brand logo is clear, stainless steel hardware can be used to try the magnet, if you feel the magnetic force, then this hardware may be in the short term Rusty.
4. There should be aluminum slide rails in the lower part of the sliding window frame. The upper and lower parts of the frame slot should be equipped with windproof blocks with tops, which is one of the keys to the sealing performance of the sliding window.
5. Carefully check whether the screws used to assemble the hardware are stainless steel or galvanized. The regular manufacturer's assembly hardware generally requires stainless steel screws, because the galvanized screws will be easy to rust because the time is too long.
6, can be used to feel and compare the weight of plastic steel doors and windows, the same size of the window in the formal market and small workshops have a big difference, mainly because the thickness of the steel lining installed in the inner cavity of the profile is not the same, some Small workshops don't even have steel linings, which is the most vulnerable place for customers when they are shopping.
7. During the installation process, the horizontal and vertical directions of the doors and windows should be supervised. The squeegee should be filled between the window frame and the wall, and the outside of the window frame must be sealed with silicon silicone to prevent water seepage.
2. Price articles
Plastic steel doors and windows on the market, like other commodities, also have the difference between quality and price. In the roadside shops and some small workshops, the price per square plastic window is generally around 150~200 yuan, while in the home market and some formal plastic steel doors and windows. Enterprises, the most common window should be around 250~300 yuan, if the configuration of higher-grade glass or high-end hardware, the price will even reach 500~800 yuan / square. You may think that this price is too high, but the market rules of "good goods are not cheap, cheap and no good goods" give us too many lessons.
3. Door and window classification and construction
(1) Classification according to the opening method of doors and windows
(1) Swing doors and windows: Door and window sashes open inward or outward.
(2) Sliding doors and windows: The door and window fans are opened and closed in a lateral movement mode.
(3) Folding door: When opening, the door leaf can be folded together.
(4) Turning doors and windows: The door and window fans are opened and closed in a rotating manner. The rotating window includes an upper hanging window, a lower hanging window, a middle hanging window, a vertical turning window, and the like.
(5) Spring door: A door with a spring hinge will automatically close when opened.
(6) Other doors: including rolling doors, lifting doors, and upturning doors.
2. According to the door and window materials can be divided into: wooden doors and windows, plastic doors and windows, aluminum alloy doors and windows, steel doors and windows, glass steel doors and windows, reinforced concrete and so on.
3. According to the function of doors and windows, it is divided into: louver doors and windows, insulation doors, fire door sound insulation doors, etc.
4. Press the position of the door and window: the door is divided into an outer door and an inner door. The window is divided into side windows (on the inner and outer walls) and skylights.
(2) Structure of the door leaf
1. Panel door: The door leaf is composed of a skeleton and a door core board. The defender core board can be wood board, plywood, hard fiber board, plastic board, glass, and the like. When the door core panel is glass, it is a glass door. When the door core is a yarn or a hundred pages, it is a screen door or a hundred door. It can also be partially made of glass, yarn or hundred pages, such as the above glass and the lower hundred pages.
2. Plywood door: The middle is a light skeleton, and the two sides are attached with a thin plate such as plywood and fiberboard. Generally it is an interior door.
3. Panel door: a door made of planks. Rugged and durable, mostly for the door.
4. What are the advantages and disadvantages of plastic steel doors and windows?
First of all, it is necessary to make clear that plastic steel doors and windows, like other building materials, have high, medium and low grades, and are divided into high quality and inferior quality. The quality and grade of the difference between plastic steel doors and windows are mainly divided into the following aspects:
First, we must first understand the UPVC profiles selected for plastic steel doors and windows. UPVC profiles are the decisive factor for the quality and grade of plastic steel doors and windows. Good UPVC profiles should be rationally designed multi-cavity, wall thickness, anti-aging and anti-UV additives in the formula. From the outside, the surface should be smooth and the color is blue and white. .
In particular, we must remind everyone that many people think that the plastic-steel windows are all the same white. In fact, the color of the high-grade UPVC profiles should be white and blue, and the color anti-aging performance is good. It will not age, discolor or deform in ten years. The middle and low-grade profiles are white and yellow. This color has poor sun protection ability. After a few years, it will become yellower until it ages, deforms and cracks. The reason is that the profile formula contains too much calcium. Everyone has been widely used in the past few years, and now it has become unrecognizable in the calcium plastic window. Therefore, we must carefully select the UPVC profiles, and we can ask the manufacturers to compare the profiles of different profiles, which can be seen at a glance.
The second is to look at the hardware used in the doors and windows. The hardware of high-end doors and windows is made of metal, and its internal strength, appearance and usability directly affect the performance of doors and windows. Many medium and low-grade plastic steels are made of plastic hardware, and their quality and longevity have great hidden dangers.
The third is to look at the assembly quality of doors and windows, mainly to see if the appearance is smooth and clean, whether the welding angle is neat, whether the hardware is matched, and whether there is steel lining.
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