How many groups should be done for the three sex testing of doors and windows? Help? Thank you?

The project is a group of 3,000 square meters, and a single project is not only a group of 3,000 square meters.

Note that each urban area has some testing institutions designated by the Energy Conservation Office, to do in these institutions, otherwise energy conservation will not be able to pass, in vain, if you don't want to save energy reports, it doesn't matter, the test data can be provided by yourself, understand what I mean, hehe.

Do the three groups of water tightness, air tightness, and wind pressure resistance.

Three groups, watertightness, airtightness, wind pressure resistance! I've asked the professionals for you!

How many doors and windows are sent for inspection in a group of three sex tests, (I know that one group is three)?

Hello dear, happy to answer your <>

The three-sex test of doors and windows is sent to the ground for inspection, and how many units are sent for inspection in a group, (I know that a group is three) is actually not calculated by dividing the scale. In accordance with the relevant national standards, the doors and windows with a construction area of less than 5,000 square meters shall be designated by the supervisor for the window type, and a group of 3 will be sampled for inspection of the three properties (also empty stove is wind pressure resistance, air tightness and water tightness); The construction area of more than 5,000 square meters is not, sampling 2 groups of 6 windows for inspection, generally about the door and window inspection batch is divided into 100 pieces for an inspection batch, less than 100 pieces are also recorded as an inspection batch. But when it is sent to the laboratory, it can be spot-checked for 3 hours.

Doors and windows are not calculated by square meters.

The contents of the three-sex test of doors and windows are as follows:

Air tightness, or air permeability, refers to the ability of external windows and doors to prevent air permeation when they are normally closed. With good air tightness, the degree of heat exchange between the window and the outdoor environment will be small, which can better ensure the stability of the indoor ambient temperature.

Water tightness refers to the ability of external doors and windows to prevent rainwater leakage under the simultaneous action of wind and rain when the external doors and windows are closed normally.

Wind pressure resistance refers to the ability of external doors and windows to avoid cracking, panel damage, partial yield, bond failure and other damage and hardware loosening, difficulty in opening and other functional disorders under the action of wind pressure when the external doors and windows are closed normally. The test method is to test the ability of the test specimen to resist damage and dysfunction under the action of instantaneous wind pressure.

The precautions for the installation of doors and windows are as follows:

1. It is best to replace the doors and windows before removing the windows. Because the process of removing windows will damage the indoor and outdoor walls, it is best to replace the doors and windows before proceeding to the next step of decoration. It is recommended that you should choose high-quality brand doors and windows, because the quality of doors and windows will determine a series of problems such as the grade, sealing and aging resistance of the entire doors and windows.

2. Choose doors and windows with good precision and strength. The purchase of doors and windows must go to the regular building materials market, some inferior plastic doors and windows, the quality of the lining steel is poor, and even there is no lining steel, the profile is not properly selected, the section is small, the strength is not enough, and other accessories are also very poor.

3. Why do doors and windows turn yellow? The appearance color of some plastic doors and windows is too white or gray, indicating that the stable components in the material of the doors and windows are not enough, and they are easy to age and turn yellow over time.

4. It is very important to check the hardware. Whether the hardware is flexible and smooth, there should be an aluminum slide rail at the lower part of the sliding window frame to facilitate its replacement, and there should be a fixed piece in the middle of the sealing strip of the sash, which is the key to the sealing of the sliding window.

5. Remember the installation of doors and windows. There should be foaming glue between the window frame and the wall to fill, and the inside and outside of the window frame must be sealed with silica copper glue or sealant to prevent water seepage. Remember, after installation, the user should remove the protective film, which can extend the service life of the doors and windows.

The three-sex testing of doors and windows refers to the detection of the wind, water and air tightness resistance of the limbs of doors and windows, also known as the "three antibodies" detection of doors and windows. The three features of the out-of-the-box are:

1.Wind resistance: refers to the wind pressure strength that doors and windows can withstand. Doors and windows can withstand the impact of the wind to avoid vandalism.

2.Water resistance: refers to the sealing and drainage performance of doors and windows, that is, whether it can effectively prevent rainwater from entering the room and whether it can be connected with external drainage. The quality of water resistance will directly affect the service life of doors and windows.

3.Air tightness: refers to the sealing performance of doors and windows, that is, whether doors and windows can effectively isolate indoor and outdoor gas exchange. The quality of air tightness resistance not only affects the freshness of the gas in the room, but also effectively saves energy and reduces environmental noise.

The three-sex testing of doors and windows is an important means to detect whether the quality and performance standards of doors and windows meet the requirements and to ensure the safety, service life and adaptability of doors and windows.

Whether it is a home or a public space, the use of doors and windows is very important, not only to protect from the wind and rain, but also to play a role in security. What is the standard for the detection of the three sexes of doors and windows? How to judge the best of the product, and then let's take a look!

Under the action of the external force of wind pressure, the lower the deflection value of the load-bearing member of the product, the lower the wind pressure value, the better. When the pressure difference between the inside and outside of the door and window is 10 pascals, whether the air penetration of the length and size of the product seam meets the air tightness standard. Under the simulation system, the pressure difference between the left and right sides of the external door and window is calculated to determine the maximum leakage pressure difference, so as to determine the quality of water tightness.

Among them, wind pressure resistance refers to the fact that when the door and window products are closed, they will not be damaged by the influence of wind pressure, such as frame cracking, hardware loosening, and unsmooth opening. This detection standard is mainly to calculate the deflection value of the load-bearing member of the external door and window, that is, under the external action, whether the value of the door and window under pressure meets the standard, and the lower the wind pressure value, the better the door and window.

To test the air tightness, it is necessary to completely close the doors and windows to prevent air from penetrating into the doors and windows. The size of air penetration directly affects the quality of door and window products. The higher the air tightness, the less heat is exchanged, and it is not easy to affect the indoor temperature.

The choice of air tightness depends mainly on whether the air penetration volume generated is up to standard under normal circumstances, when the pressure difference between the inside and outside of the door and window is 10 pa.

Water tightness, as the name suggests, is the water seepage performance of doors and windows in simulated real rainstorm weather. That is, in the simulation system, the pressure difference between the left and right sides of the door and window is calculated, and then the maximum leakage pressure difference is calculated, so as to determine the quality of the water tightness of the door and window.

Wind pressure resistance, air tightness, and water tightness are the three items that must be tested for all door and window products at present, in order to ensure the normal use of the product, and the performance testing of sound insulation and thermal insulation is mainly for door and window products with special needs.

Hope the above, helpful.