Allowable deviation of wall thickness of aluminum alloy door and window profiles

The allowable deviation of wall thickness of aluminum alloy doors and Windows varies according to the type and use of profiles. Here are some key takeaways:

‌ Allowable deviation of solid profile wall thickness ‌ :

According to the provisions of GB/T5237 "Aluminum Alloy Building profiles", the minimum nominal wall thickness of aluminum building profiles should not be less than 1.2mm.

The wall thickness tolerance of solid profiles is 0.15mm, that is, the wall thickness shall not be less than 1.05mm.

‌ Allowable wall thickness deviation of hollow profiles with closed cavities ‌ :

The allowable deviation of wall thickness of hollow profiles with closed cavities is 0.23mm, that is, the wall thickness shall not be less than 0.97mm.

‌ main profile wall thickness standard ‌ :

The wall thickness of the main profiles of aluminum alloy doors and Windows also has a clear standard. For example, the outer door should not be less than 2.2mm, and the inner door should not be less than 2.0mm; The outer window should not be less than 1.8mm and the inner window should not be less than 1.4mm. It is important to note that these are recommended requirements, not mandatory standards.

The wall thickness of the main stress part of the aluminum alloy window profile should not be less than 1.4mm. For high-rise buildings (such as more than 20 floors), it may be necessary to choose to increase the thickness of the profile to enhance the resistance to wind pressure.

The wall thickness of the main stress part of the heavy sliding door profile should not be less than 2.0mm, and the thickness of the flat door profile should not be less than 1.2mm.

In summary, the allowable deviation of the wall thickness of aluminum alloy doors and Windows depends on the specific type and use of the profile. When purchasing, it is recommended to carefully review product specifications and technical parameters to ensure that the selected product meets your needs and national standards.