[China Glass Net] The aluminum door and window of the broken bridge is designed with a structural drainage system by using the principle of pressure balance. The sliding design is stepped with a slope, and the drainage port is provided. The drainage is smooth and the watertightness is good. At the same time, the aluminum frame and window frame of the broken bridge adopts hollow design, strong resistance to wind pressure deformation and good anti-vibration effect. It can be used in high-rise buildings and residential buildings. It can be designed with large-area window type and large lighting area. The airtightness of this window is better than any aluminum and plastic window, which can ensure the indoor window sill and floor of the area with large wind and sand without dust. Jingjiang Pingdong Import&Export Co.,Ltd , https://www.jingjiangsocks.com
In addition to outstanding wind pressure resistance and waterproof features, the broken aluminum doors and windows also have the characteristics of strong sealing, good sound insulation and so on. Aluminum alloy doors and windows are now widely used in construction. Although the previous aluminum alloy windows have avoided some shortcomings of steel windows, the profiles themselves are made of metal materials, which have fast heat and cold conduction, and cannot solve the problems of sealing and heat preservation. At present, many door and window enterprises have developed aluminum bridges for broken bridge insulation, that is, the use of hard plastics in the middle of aluminum profiles to break the aluminum alloy, so as to achieve the same thermal insulation effect as plastic steel windows, and solve the problem of aluminum profiles. The problem of high thermal coefficient.
Aluminum alloy doors and windows have occupied half of the door and window industry, but many consumers are worried about buying unqualified inferior products when buying aluminum alloy doors and windows, because unqualified aluminum alloy doors and windows will be affected by sunlight, air, rain, etc. , causing deformation of the aluminum profile, and even causing the glass to rupture and fall off. In order to help consumers buy qualified products when they buy, experts list the standards of three inferior aluminum alloys for the majority of consumers:
1, the thickness of the oxide film is thin
The national standard stipulates that the thickness of the oxide film of the building aluminum profile should be not less than 10um (micron). The thickness is not enough, and the surface of the aluminum profile is rust and corrosion. Some aluminum profiles without a name, site, production license and certificate have a thickness of only 2 to 4 um, and some even have no oxide film. According to experts' estimates, for every 1 um reduction in oxide film thickness, the cost per ton of profile can be reduced by more than one hundred yuan.
2. Chemical composition is unqualified
The aluminum profile with a large amount of miscellaneous aluminum and scrap aluminum can greatly reduce the cost, but it will lead to the unqualified chemical composition of the aluminum profile of the building, which seriously jeopardizes the safety of the construction project.
3, reduce the profile wall thickness
90 series sliding window type, according to national standards, the aluminum wall thickness is not less than 1.4mm, but many products on the market have a wall thickness of only 0.6 to 0.7mm. 46 series grounding door type, the wall thickness of the aluminum profile used by the national standard is not less than 1.62mm, and the wall thickness of some products is only 0.97 to 1.18mm.
Inferior aluminum profiles greatly reduce the sealing time, reduce the loss of chemical reagents, and reduce the cost, but the corrosion resistance of the profiles is also greatly reduced.
February 20, 2023