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The screw loosened the door and pressed it in, and the electric hammer was used to directly fix the iron sheet and punch the hole.
Generally, there are 10, 3 left and right baidu, and 2 upper and lower frames. zhi >>>More
Specifications of the expansion screws of the security door. >>>More
The composite door installation method is the same as the general security door. >>>More
If it is at the upper end of the door frame, you can leave it alone, if it is at the middle and lower end, the door frame will move after a long time. Nail two steel nails diagonally into the expansion tube of the expansion screw, and the screw can be tightened.
Hardware stores generally sell hexagonal extended socket wrenches required for disassembling and assembling security doors.