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Aluminum plastic door and window crescent lock handle quality identification method
Oct 29, 2018

In the process of selecting aluminum-plastic door and window crescent lock handles, the handles for them can be discriminated by some methods. The first is to analyze from the degree of oxidation, so you can scratch the surface of the profile when you buy it, and see if the oxide film on the surface can be wiped off.

 

The second is to analyze from the appearance color. Under normal circumstances, the aluminum-plastic door and window crescent lock handle made by the same aluminum alloy profile should have the same color. If the color difference is obvious, it is not suitable for purchase. Generally, the normal aluminum alloy profile has a silver-white cross section and a uniform texture.

 

Then it is resolved from the flatness, mainly to check the surface of the aluminum-plastic door and window crescent lock handle, and there should be no depression or bulging. In addition, we must distinguish the strength of the product. We can bend the profile moderately by hand. If the profile is bent without effort, it can be concluded that the strength of the aluminum profile is not up to standard, and the strength of the profile is not as hard as possible. Resilience, non-hard materials, use this feature to forge different shapes, so the owner must look for the brand when buying, carefully observe.http://www.lihuiroller.com/

 








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