Aluminum alloy doors and Windows door cover and wall connection crack; Sliding door or open and close doors and Windows, frame fan vibration; When subjected to air pressure or sliding door, window frame deformation is big, shake, give a person a kind of insecurity.

The factors leading to the quality problem of this product are:

(1) The selection of Windows and doors profiles is unreasonable, the specifications are small, and the profiles are thin and thick.

(2) the connection and fixed immobility of the door and window frames with the wall is unreasonable.

(3) the structure is not scientific when the doors and Windows are pieced together, and the industrial aluminum profile is not firm, resulting in deformation after bearing force.

To deal with this problem, aluminum alloy processing should adopt the following preventive measures:

(1) Aluminum alloy doors and Windows should be selected according to the specifications of the door and window holes and the relative height of installation. Aluminum alloy profiles for housing projects cross section, window mode is not less than 55 series of products; No less than 75 series of Windows; The interior life balcony flat window is not less than 75 series of products. The thickness of aluminum alloy door and window profiles is not less than 1.4mm, and the wall thickness of the door profiles is not less than 1.5mm.