How to distinguish the quality of broken bridge aluminum doors and windows?
Release time:
2021-09-09
How to distinguish the quality of broken bridge aluminum doors and windows? Many consumers are not very clear about how to distinguish the advantages and disadvantages of broken bridge aluminum doors and windows. Good broken bridge aluminum doors and windows are expensive. Some manufacturers, in order to reduce costs, switch beams and pillars during processing to attract consumers to purchase at low prices. So, as consumers who are not familiar with the door and window industry, how can we distinguish the quality of broken bridge aluminum doors and windows?
How to distinguish the quality of broken bridge aluminum doors and windows? Many consumers are not very clear about how to distinguish the advantages and disadvantages of broken bridge aluminum doors and windows. Good broken bridge aluminum doors and windows are expensive. Some manufacturers, in order to reduce costs, switch beams and pillars during processing to attract consumers to purchase at low prices. So, as consumers who are not familiar with the door and window industry, how can we distinguish the quality of broken bridge aluminum doors and windows?
1. Look at the surface of the aluminum material: good broken bridge aluminum doors and windows have a rough surface and glossy cross-sections, while low-quality broken bridge aluminum doors and windows have holes and are not smooth.
2. Check the thickness of the oxide film: According to national standards, the thickness of the oxide film on building aluminum profiles should not be less than 10um (micrometers). If the thickness is not enough, the surface of aluminum profiles is prone to rust and corrosion. Some aluminum profiles without product name, factory address, production license, or qualification certificate in the sampling inspection have an oxide film thickness of only 2 to 4um, and some even do not have an oxide film. According to experts, for every 1um reduction in oxide film thickness, electricity bills can be reduced by more than 150 yuan per ton of profiles.
The brand's broken bridge aluminum material has a thick coating, and the windows will not peel off paint even after years of exposure to wind. Poor quality materials will peel off the surface paint film over time.
3. Check the insulation rod: Generally, PVC is used as the insulation rod for low-quality broken bridge aluminum doors and windows. The difference in expansion coefficient between PVC material and aluminum material is large, making it easy to loosen and break. Good broken bridge aluminum doors and windows use PA66 nylon insulation rods, which have good insulation, stable condition, and long service life.
4. Looking at the wall thickness of the profile, according to national standards, the wall thickness of the broken bridge aluminum profile is above 1.4mm, and some products are only 1.0-1.2mm. The wall thickness of the aluminum profile used in the national standard for broken bridge aluminum external door opening is above 2.0mm. During sampling inspection, some products only have a thickness of 1.4mm. Poor quality aluminum profiles greatly reduce closing time, reduce chemical reagent losses, and lower costs. However, the corrosion resistance of the profiles also significantly decreases.
5. Look at hardware: Door and window hardware is an important factor that restricts the performance and service life of doors and windows. Whether it is imported brand hardware or domestic brand hardware, it is necessary to choose a legitimate brand to prevent counterfeit goods, check whether the opening is smooth, and whether the lock is installed.
6. Look at the technology: Good broken bridge aluminum doors and windows have complete corners, no gaps, and are not easily soaked in water.
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