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Anonymous users2024-01-24Tools required: 1 hammer, 1 needle-nose pliers.
1. To remove the expansion screw, you need to understand the principle of the expansion screw, and use a hammer to smash the screw outside the wall into it, and the patch will shrink;
2. When dismantling, first use needle-nose pliers to strengthen the outer casing, as shown in the figure below
3. Then push the outer screws in, as shown in the figure below
4. Press the screw with the last hand inside, and pull out a little bit with pliers to tighten the jacket, and you can pull it out.
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Anonymous users2024-01-23I really can't help this, we used to violently dismantle the entire frame, and then we also used violence to remove the expansion screws. However, you can try to unscrew the nut first, and then use the clamp to clamp the outer sleeve of the screw and pull it out. Because the tapered expansion bolt is not intended to be removed in the design.
The composite door installation method is the same as the general security door. >>>More
There are special concrete blocks reserved on the door frame of the anti-theft door, and the hole should be punched at the position of the concrete block when the anti-theft door is installed, and the hole in other positions will definitely not work. Reinstall, pay attention to the hole position, or find professional personnel to construct.
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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.
Hardware stores generally sell hexagonal extended socket wrenches required for disassembling and assembling security doors.