Can the curtain wall glass subframe be fixed on the keel with dovetail screws?

The auxiliary frame of curtain wall glass can be fixed on the keel with dovetail screws. According to the relevant public information, when fixing the curtain wall glass subframe on the keel, it is necessary to choose dovetail screws suitable for the keel and subframe, mainly to ensure the firmness and safety of the fixation. Before fixing, drill holes in the keel in advance to avoid cracking or deformation of the keel, and at the same time, leave enough space for the dovetail screw to shrink and expand.