The wall thickness requirements of plastic steel door and window profiles, and the thickness of alum

The latest standard in 2012: the minimum measured wall thickness of the visible surface of the main profile for windows should not be less than, and the minimum measured wall thickness of the non-visible profile should not be less than; The minimum measured wall thickness of the visible surface of the main profile for the door should not be less than, and the minimum measured wall thickness of the non-visible profile should not be less than.

GB8814 is required to be steel with full wall thickness, but it rarely meets the standard, and it is basically the steel used. This is the current disadvantage of China's construction market, the cost determines the grade and price of your product. After all, merchants can't afford to make a profit.

Can it solve your problem?

The thickness specification of aluminum alloy door and window profiles is as follows:The standard thickness of the national standard aluminum alloy should be greater than, according to the requirements, the thickness of the aluminum alloy window should be above, and the thickness of the aluminum alloy door should be above, but many projects have no special requirements, so the thickness of the non-national standard aluminum alloy will be used to make the window, and its actual thickness is only to.

Aluminum alloy introduction:Alloys based on aluminum with a certain amount of other alloying elements added are one of the light metal materials. In addition to the general characteristics of aluminum, aluminum alloys also have some specific characteristics of alloys due to the different types and quantities of alloying elements.

GB T 8478-2020 "Aluminum Alloy Doors and Windows" has been officially announced in the No. 4 standard announcement of 2020 recently, and the full text is available on the national standard full-text disclosure platform, and the standard will be officially implemented on February 1, 2021. Compared with the current standard, the biggest change in this standard is to put forward new requirements for the wall thickness of external doors and windows.

The revision of the standard has been GB T 8478-2008 cited in the old version of the standard, which has 12 new standards, there are 23 new revised standards, after the 2008 edition of many standards are being revised and revised, fully implement the latest national standards, so that it is more in line with the trend of green building.

GB8478-2008 stipulates that the wall thickness of the main stressed part of the main section of the external doors and windows is measured, and the external doors are not less than the external windows; It is stipulated that the minimum nominal wall thickness of the door and window profile shall not be less than .

The area is the actual installation area of the window. Width * Height = Area.

The only controversy is whether it is calculated according to the area of the opening or the actual processing size of the door and window.

In general, door and window manufacturers recommend calculating the area according to the size of the door and window opening; As for real estate developers or general contractors, they require the area to be calculated according to the actual size of the doors and windows.

Because there is an installation gap between the door, window and the wall, this gap needs to be filled with elastic foam material or other treatment.

In order to pay less for the project, the procuring unit does not agree to include the gap area of the filling material in the area of doors and windows; For door and window manufacturers, although the window is not as large as the size of the hole, the filling material also has to be paid. So this gap is a point of contention.

In the end, it depends on who gives in on both sides and reaches a balance point.

Precautions for installing plastic steel doors and windows:

1. The profile should be stored in an environment of more than 5 for 24 hours before blanking and welding.

2. The temperature and time of the welding process should be appropriately increased on the basis of the original welding process.

3. The length of the bead should be suitable, not too long, and do not pursue the "tight seam" too much, because the strip is too long and easy to cause the welding angle to crack or the strip to go out of the groove.

4. Use high-quality sealing strips that still have softness under low temperature conditions. Inferior adhesive strips harden at low temperatures and completely lose their elasticity, which has a great impact on glass assembly.

5. The length of the aluminum slide rail is strictly forbidden to exceed the standard, and the length of the aluminum slide rail should be about 2mm shorter than the size of the inner mouth, and there is a margin on both sides.

6. The installation of doors and windows on the wall, especially the assembly of glass strips, should be carried out in an environment of more than 5. When assembling the glass strip, if the ambient temperature is low, it is recommended to make an incubator and wrap the glass strip with an electric blanket at a constant temperature for a period of time before assembly.

According to GB T5237 "Aluminum Alloy Building Profiles", the minimum nominal wall thickness of building aluminum profiles should not be less than, of which the allowable deviation of the wall thickness of solid profiles, that is, the wall thickness shall not be lower; The allowable deviation of the wall thickness of the hollow profile part with a closed cavity is not lower.

The cross-sectional geometric dimensions of aluminum alloy profiles for aluminum alloy doors and windows have been serialized, and the product standard "Aluminum Alloy Doors and Windows" (GB T 8478-2008) stipulates that the minimum measured wall thickness for the production of aluminum alloy doors and windows profiles should not be less than.

In the aluminum alloy profile market, some manufacturers in order to one-sided pursuit of profits, thin the thickness of aluminum alloy profiles, due to the thinner plate wall, the strength is not enough, under the action of large loads, it is easy to damage the surface or deform the doors and windows, reducing the wind pressure resistance of aluminum alloy doors and windows.

But the manufacturer usually gets stuck to it to reduce costs.

to such a thing.

The standard thickness of aluminum profile doors and windows is not less than.

Aluminum alloy doors and windows are made of aluminum alloy extruded profiles for frames, mullions, and fans, which are called aluminum alloy doors and windows, referred to as aluminum doors and windows. Aluminum alloy doors and windows include doors and windows that are made of aluminum alloy as the base material of stressed rods (rods that bear and transmit self-weight and load) and wood and plastic, referred to as aluminum-wood composite doors and windows, and aluminum-plastic composite doors and windows.

The quality of aluminum alloy doors and windows can be roughly judged from the selection of raw materials (aluminum profiles), the surface treatment and internal processing quality of aluminum, and the quality of aluminum alloy doors and windows.