Aluminum alloy doors and windows span problem
Can be installed, but need to set the steel skeleton, doors and windows facade grid, the vertical points two cells: the grid is located 1.2 meters, the next sub-sub-1.5 meters; horizontal to 4 grid, a total of five neutral column, Column. Steel frame set up, and then do the window grid, so that the solid. Specific details can be made to the staff of the installation of doors and windows.
Can not, neither safe nor convenient to install, why should we do this?
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