Column fixing method:
1. The finished column is welded, that is, the 4-hole column bottom plate is welded at one end of the column profile, and it is locked and fixed with expansion screws during installation. This method is generally stable.
2. Another method is to cover the bottom plate of the column with the column, and then lock it with the expansion screw. This installation method is slightly worse than welding finished columns, because one end of the floor and column is only covered and not completely welded, unless the wall thickness of the floor is thick enough and the hardness is strong, it can be selected.