According to the "Technical Specification for Glass Curtain Wall Engineering" JGJ102-2003, the thickness of the main stress parts of the aluminum alloy column section, the thickness of the aluminum profile section of the open part should not be less than 3mm, and the thickness of the closed part should not be less than 2.5mm.
The column The minimum value of the thickness of the main stress parts of the cross-section, mainly with reference to the national standard "aluminum alloy building profiles" GB/T5237 on the curtain wall with a minimum thickness of 3.0mm of the provisions of the closed box section, due to the better resistance to local instability, can be used with a smaller wall thickness, therefore allowing the use of the minimum wall thickness of 2.5mm of the profile.