In the aluminum alloy profile market, some manufacturers reduce the thickness of aluminum alloy profiles in order to pursue profits unilaterally. Due to the thin wall and insufficient strength, it is easy to damage the surface or deform the doors and windows under large load, which reduces the wind pressure resistance of aluminum alloy doors and windows.
Extended data:
Precautions:
The installation of aluminum alloy door and window frames should be carried out after wet operations such as indoor painting and outdoor painting, and the installation of door and window sashes should be carried out after the door and window frames are painted. The civil contractor shall pop up the vertical lines, horizontal lines and incoming and outgoing lines of doors and windows before the installation of door and window frames, and provide lightning protection connection points for the main body, so that the lightning protection system of aluminum door and window projects can be connected with the main body.
Attention should be paid to indoor ground elevation when installing door frames for aluminum alloy doors and windows, and corresponding gaps should be reserved if carpet boards are laid inside. The surface of the floor spring should be the same as the indoor ground elevation.
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