What should we pay attention to when purchasing the aluminum doors and windows? Today, ORIDOW will make it up for you to answer one by one.
This is a problem that can't be ignored, but we can't blindly pursue low price to cause problems in the quality and after-sale of bridge cutoff aluminum. The unit price of famous brand bridge cutoff aluminum doors and windows is generally at least 400 yuan per square meter. We can get it from the cost analysis of bridge cutoff aluminum doors and windows.
Some on-line quotations of more than 200 yuan and more than 300 yuan / m2 of broken bridge aluminum doors and windows are generally not guaranteed, or fake and inferior broken bridge aluminum is used, or the unit price may be low, and then add waterproof glue, crossbeam, positioner and other auxiliary materials to increase the total price.
2, wall thickness
The wall thickness of the broken bridge aluminum doors and windows shall at least meet the national standard of 1.4mm. Some manufacturers use 1.2mm or thinner broken bridge aluminum doors and windows. Such products are not guaranteed in quality and are not strong enough to meet the national standard of building doors and windows.
There are many manufacturers engaged in bridge cutoff aluminum doors and windows on the Internet, some are middlemen with building materials exhibition hall, some are manufacturers, the bridge cutoff aluminum doors and windows with building materials exhibition hall are at least 15% - 30% more expensive than the factory, the direct choice of manufacturers is more affordable, we also need to consider from the reputation of manufacturers, after-sales service and other aspects.
4. Energy-saving and heat preservation
The frame material and glass of doors and windows are important factors affecting the thermal conductivity, and the building doors and windows also account for 49% of the total energy consumption of the building fence. Because of its special heat insulation technology, the thermal conductivity of aluminum doors and windows is only 1 / 1250 times of aluminum. High-quality doors and windows are usually selected such as heat reflection coated hollow glass and Low-E hollow glass, which can not only transmit light but also ensure that the indoor temperature is not affected by the outside.
5. Waterproof and dampproof
Because the water absorption of the bridge cutoff aluminum doors and windows is less than 0.1%, and the bridge cutoff frames with double-layer sealing are used between the frames and fans, and nylon 66 thermal insulation adhesive strip is installed, the drainage holes are set at the appropriate positions of the door and window frames, and the corners are also formed by mechanical welding, so the sealing performance of the bridge cutoff aluminum doors and windows is excellent.