How to choose plastic steel doors and windows, how to choose plastic steel doors and windows

1. Look at UPVC profiles: the quality of UPVC profiles determines the quality and grade of plastic steel windows, good UPVC profiles should be reasonably designed with multiple cavities, wall thickness, and the formula contains anti-aging and anti-ultraviolet additives, which should be smooth and clean on the surface and blue and white in color from the appearance. In fact, the color of high-grade UPVC profiles should be white and blue, such a color has good aging resistance, and will not age, discolor and deformation in the outdoor wind and sun for thirty or fifty years.

The low-grade profile is yellow in white, this color has poor sun protection ability, and will become more and more yellow after a few years of use until aging, deformation, and brittleness, the reason is that the profile formula contains too much calcium.

2. Look at the hardware used in plastic steel windows: the hardware of high-grade plastic steel windows are made of metal, and their internal strength, appearance and usability directly affect the performance of doors and windows. Many low-grade plastic steel is made of plastic hardware, and its quality and life are extremely hidden, and it depends on whether the hardware is complete.

3. Look at the assembly quality of plastic steel windows: mainly to see whether the appearance is smooth and undamaged, whether the welding angles are neat, and whether the hardware is complete. Whether there is a steel lining, such as a sliding window, whether it is compact with a hand push and pull, and whether it is flexible after the window is opened and closed.

4. See whether the manufacturer is regular: check whether the plastic steel window manufacturer has the production license issued by the Construction Committee, whether it can show the test report, and not be greedy for cheap.

1. Acceptance criteria for qualified plastic steel windows

The surface of the plastic steel window should be smooth, the color should be basically uniform, no cracks, no bubbles, welding cleaning and smoothness, and there should be no defects such as scars and impurities that affect the use. Average angle.

The outdoor window should have a drainage groove with a length of 25mm, and the groove should be straight and not penetrate the bottom of the profile. Ensure that the water in the intrusion frame is discharged to the outside in time and has a dust-proof effect.

The allowable deviation of the width and height of the window frame sash should not be greater than +3mm for doors and windows below 2 meters, and not greater than +.

The difference between the diagonal dimensions of the window frame sash and the allowable deviation (300mm 900mm) +901mm 1500mm) +1502mm 2000mm) + the assembly gap of the adjacent two components is less than that, and the same flatness at the welding place of the adjacent two components should not be greater than.

The gap between the corners under the glass bead should not be greater than 1mm, and the assembly should be firm, and two beads should not be used on one side.

The hardware accessories are installed in the correct position, the quantity is complete, the installation is firm, the switch is flexible, and there is enough strength.

After the sealing strip is assembled, it should be uniform and firm, the interface should be tight, and there should be no de-groove phenomenon.

After the frame and sash are assembled, the switch function shall not be obstructed, and the door and window sash shall not be warped.

For the fixation of each section of steel, there shall be no less than 3 screws, and the spacing shall not be more than 300mm, and the distance from the end of the section steel shall not be more than 100mm. The fixed section steel shall not be loosened.

The size of the glass, from the window frame, the sash of the light transmission edge, each side lap should not be less than 8mm, when installing glass, around the glass must be equipped with shockproof cushion blocks.

Second, how to buy plastic steel doors and windows

Look at the quality of plastic steel doors and windows. When purchasing plastic steel doors and windows, it is best to touch whether the blades of plastic steel doors and windows are smooth and average, and see if each blade will be fried. Generally speaking, high-quality plastic steel doors and windows are better in terms of blade details, especially plastic steel door and window blades made of plastic, wood blocks, and bamboo pieces, if the texture is better, then it will have a longer service life.

Look at the flatness of plastic steel doors and windows. Look at the flatness and uniformity of plastic steel doors and windows, see whether the gaps between the blades are consistent, and whether the blades have discoloration, decolorization or obvious color difference.

Look at the flexibility of accessories for plastic steel doors and windows. The adjusting rod of plastic steel doors and windows has two functions, one is to adjust the lifting switch of plastic steel doors and windows, and the other is to adjust the angle of the blades. When overhauling the adjustment rod, first hang the plastic steel doors and windows to see if the lifting switch is smooth, and then roll the adjustment lever to see if the flip of the blades is also flexible.

Look at the appearance color of plastic steel doors and windows. It is necessary to see the level of coordination between plastic steel doors and windows and the color and style of the space, therefore, it is necessary to look at the appearance of plastic steel doors and windows. Choosing plastic steel doors and windows that want to coordinate with the color and material of the home space can increase the beauty of your home.

1. The brand of the window: At the same time, when purchasing doors and windows, in the case of ensuring both appearance and quality, it is forbidden to be greedy for a small bargain, and it is recommended to buy products to regular brand merchants to buy, so that there will be problems in the later stage.

2. The type of window: under normal circumstances, the window type includes casement, push-pull and fixed, in terms of sound insulation effect, the fixed window has the best sound insulation effect, but this kind of window is only suitable for places that do not need to be opened but have lighting needs; Compared with casement windows and sliding windows, the sound insulation effect of casement windows is better than that of sliding windows, and you can choose the right type of window according to your needs.

3. Tightness of the window: The tightness refers to the degree of sealing of the window, including the sealing of the glass and the frame. The sealing of the frame and frame after closing the window, and the sealing of the window and wall after installation, together affect the sealing performance of the window.

At present, there are two main types of sealing strips on the market, one is wool seals, and the other is rubber seals. The wool sealing strip and the rubber sealing strip have their own shortcomings, and the wool sealing strip is easy to lose hair after a long time, which greatly reduces the sealing effect. The rubber sealing strip is easy to harden and age after being exposed to wind, sun and rain, which also reduces its sealing effect.

The glass is good and the sealing strip has no gaps.

In addition to looking at the profile, but also look at the glass used. The glass selected for plastic steel doors and windows should be smooth, without water lines, firmly installed, not in direct contact with plastic profiles, and there should be sealing strips to close the gaps. If it is a double-glass interlayer, there should be no dust and water vapor in the interlayer.

There should be aluminum slide rails at the lower part of the sliding window frame to facilitate its replacement, and in general, double pulleys are better than single pulleys. After making it, be sure to check it carefully before installing. The entire surface of the plastic steel window after production should be smooth and flat, without welding fracture, and special steel lining should be embedded in the door and window frame and fan profile.

First, look at the materials, high-quality plastic steel doors and windows used in aluminum profiles, thickness, strength and oxide film, etc., should meet the relevant national standards, the wall thickness should be more than millimeters, the tensile strength should reach 157 Newtons per square meter millimeter, the yield strength should reach 108 Newtons per square millimeter, and the thickness of the oxide film should reach 10 microns. If it does not meet the above standards, it is inferior to the quality of plastic steel doors and windows, which cannot be used.

Second, look at the processing, high-quality plastic steel doors and windows, fine processing, exquisite installation, good sealing performance, free switching. Inferior plastic steel doors and windows, blind selection of aluminum profile series and specifications, processing shoddy, sawing instead of milling, not according to the requirements of installation, poor sealing performance, switch is not free, not only leakage and rain leakage and glass bursting, but also encounter strong wind and external force, easy to push and pull part or glass scrape or bump down, destroy and hurt people.

3. Look, in general, high-quality plastic steel doors and windows are about 30% higher than inferior plastic steel doors and windows due to high production costs. Some plastic steel doors and windows made of aluminum profiles with a wall thickness of only millimeters have tensile strength and yield strength that are much lower than those stipulated in relevant national standards, and are very unsafe to use.

Fourth, what determines the factors of plastic steel doors and windows.

1. Profile quality: Because high-quality plastic steel profiles contain anti-aging and anti-ultraviolet chemical components, the color should be blue-white from the appearance, rather than white or milky white as everyone usually thinks; Medium and low-grade plastic steel doors and windows contain more calcium in the profile formula, so they are yellowish in the white, and they will become more and more yellow after a long time

2. Thickness of steel lining: In order to strengthen the plastic steel profile, the plastic steel window should be sandwiched with a steel lining, and the steel lining should be ...5 (unit: mm) two thicknesses. The national standard is millimeter thick, which is enough for ordinary household use.

3. Hardware accessories: whether the hardware is imported or domestic is also a major factor in determining the best doors and windows.

Fifth, how to distinguish between real and fake real German plastic steel windows.

1) Profile color: The color of the real German profile is blue-white; The color of the fake Shide profile is white and yellowish.

2) Whether there is a steel lining: there is a steel lining in the real German profile; There is no steel lining in the fake Shide profile. Whether there is a steel lining or not is very intuitive from the cut surface, and it cannot be seen from the outside. The way to distinguish is to take a magnet and suck it on the profile, and whether there is a steel lining to know it.

3) Protective film: The protective film of Zhende profile is hot-pressed, and there will be no small bubbles; The closed-branch profile of the fake sweet potato is hand-pasted, and there are generally small bubbles.

4) Anti-counterfeiting marking: The anti-counterfeiting mark of the real German profile is very clear, and the color will not fade with water; The orientation mark of the fake Shide profile is blurry and black, and the color will fade when rubbed with water, and some will even disappear.

Plastic steel doors and windows have gradually become the new favorite of decoration with their excellent performance and beautiful appearance. However, plastic steel doors and windows are still a new type of building materials in China, and most people are still relatively unfamiliar with it. So, how to distinguish the advantages and disadvantages of plastic steel doors and windows?

First of all, it should be clear that plastic steel doors and windows, like other building materials, have high, medium, low-grade and high-quality and inferior quality, which should not be confused. The quality and grade of plastic steel doors and windows are mainly divided into the following aspects:

First, we must first understand the UPVC profiles used for plastic steel doors and windows. UPVC profile is the decisive factor of 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 additives, from the appearance should be smooth surface, color white.

In particular, I would like to remind you that there are many people who think that plastic steel windows are the same white, but in fact, the color of high-grade UPVC profiles should be white and blue, and the color has good anti-aging performance, and will not age, change color and deform in the outdoor wind and sun for thirty or fifty years. The low-grade profile is yellow in white, this color has poor sunscreen ability, and it will become more and more yellow after a few years of use until aging, deformation, and brittleness, the reason is that the profile formula contains too much calcium. You can understand it from the calcium plastic windows, which have been widely used in previous years, and have now become unrecognizable.

Therefore, we must carefully choose UPVC profiles, and ask the manufacturer for different profile sections to compare together, which is better and which is inferior at a glance.

Second, it is necessary to look at the hardware used for doors and windows. The hardware of high-end doors and windows are made of metal, and their internal strength, appearance, and usability directly affect the performance of doors and windows. Many low-grade plastic steels are made of plastic hardware, and there are great hidden dangers in their quality and life.

Third, it is to look at the assembly quality of doors and windows, mainly to see whether the appearance is smooth and undamaged, whether the welding angles are neat, whether the hardware is complete, whether there is a steel lining, etc.

The most important point is that we must check whether the door and window manufacturers have a production license issued by the Construction Committee, do not be greedy for cheap, the use of street workshop production of plastic steel windows, its quality and reputation are not guaranteed. Tuba Rabbit** provides you with "various decorations**, 1-4 local decoration companies, 3 sets of decoration design plans" for free, as well as decoration pit avoidance strategies! Follow this link:

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At present, the quality of plastic steel windows on the market is uneven, how to buy it? Here's how to buy:

1. Firmly means that the doors and windows should be firm, and the four corners of the plastic steel door and window frames and fans are usually welded, and the average angular strength of the national standard requires that the average angular strength should reach more than 3000N. In this regard, it is necessary to have formal welding equipment, and the small processing shops on the side of the road are basically not guaranteed. In addition, the lead regret is that the connectors and fasteners should be firm, because the main plastic window is PVC, and its cross-sectional wall thickness is usually around the left, can not withstand hardware such as casement window hinges.

They need to be supported by a steel lining of sufficient thickness inside, so before purchasing, it is necessary to carefully observe whether the manufacturer is short of a small amount or the possibility of cutting corners, and it is not easy to check the thickness of the internal steel lining after the doors and windows are made into finished products.

2. Flat means that the doors and windows should be flat, which includes the welding angle can not be high and low dislocation, and the splicing of two windows can not be uneven. Flat is mainly reflected in the appearance, and it is also an important item that brings beauty to our vision. Ping is also embodied in the national standard, such as:

The height difference of the weld angle should be within the range, etc. It doesn't matter if you don't know the national standard in this case, but you have to see his sample window, and then require its appearance quality to reach the sample window, and the quality of the sample window displayed by the general business is still OK.

3. Accurate refers to accuracy, mainly accurate size. It includes the size of the opening when it is actually measured and the size of the sash and frame after installation, and the size of the actual size is not accurate and often affects the opening of doors and windows, the sealing of doors and windows, etc. Users can simply know that the lap between ordinary door and window frames and sashes is generally 8-10mm, and if the size is too small (such as 4-5mm), its sealing performance is questionable.

4. Dense refers to the sealing performance, the size mentioned above will affect the seal, and here the unqualified accessories purchased by the manufacturer will also affect the seal. For example, the inferior rubber strips used by some manufacturers will shrink after half a year, resulting in a large gap between the glass and the fan, and the rain and air can easily enter the room.

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