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How to distinguish the quality of aluminum alloy doors and windows?
- 2017-03-23 08:56 -
Aluminum alloy doors and windows from the quality of raw materials (aluminum extruded sections) of the material selection, aluminum surface treatment and internal processing quality, aluminum alloy doors and windows and other aspects of the offer to make a general judgment.
1. Materials
Excellent aluminum alloy doors and windows used in aluminum profiles, thickness, strength and oxide film, should comply with the relevant national rules and regulations. Wall thickness should be more than 1.2 mm, the tensile strength reaches the Newton per square millimeter of 157, the yield strength to reach the per square millimeter of 108, the thickness of the oxide film should reach 10 micron, the thickness of the film should be more than 10 microns. If the above is not up to the standard, it is defective Aluminum Alloy doors and windows.
2. Processing
Excellent aluminum alloy doors and windows, fine processing, pay attention to equipment and sealing function is good, the switch is calm. Aluminum Alloy defective doors and windows, choose aluminous profile series and specifications, processing to cut corners, cut instead of milling, no device in accordance with the requirements of the sealing function, the switch is not calm, not only air leaks, glass bursting scene, and encountered strong winds and force, simple push-pull glass or some fall or drop destroy, wounding.

3 quoted price
In general, excellent Aluminum Alloy doors and windows for the production of high cost, price is higher than 30% at the mercy of the defective Aluminum Alloy doors and windows. Some have a wall thickness of only 0.6-0.8 mm aluminum alloy doors and windows made of aluminum, tensile strength and yield strength is much lower than the relevant national rules and regulations, the use of very unsafe.
In addition, the processing of aluminum alloy doors and windows more self-employed, they do not understand the structural features and functions of aluminum alloy doors and windows. In order to reduce the cost of shoddy work, shoddy, commodity risk is large, usually can not be used.
The incorporation of aluminum, aluminum scrap a lot of clutter can greatly reduce the cost, but will lead to the construction of chemical composition of aluminum is not qualified, seriously endangering the construction safety. A lot of defective aluminum cut off time, cut the loss of chemical reagents. The cost is reduced, but the profile corrosion resistance is also greatly reduced the selection of aluminum alloy doors and windows at the best time to identify the credibility of high windows and doors goods.