Tighten the bolt for 2-3 times, and then unscrew the bolt after feeling that the expansion bolt is tight but not loose, and then install the fixture with holes on the fixture to align the bolt, and install the outer gasket or spring washer to tighten the bolt.
6MM drill 10MM hole; /kloc-8MM hole of 0/2 mm, according to the outer diameter of the expanded tube. If the brick wall is soft, choose a smaller one. The expanded pipe shall be completely embedded in the wall. As long as the threaded part is long enough, the deeper the casing part, the greater the strength.
The structure of the expansion screw installer is specially designed for installing the expansion screw under special circumstances, including a hexagonal cylinder with an internal interface adapted to the expansion screw. The upper part of the pipe body is provided with an impact drill installation position. It can be used by binding impact drills in the air, and quickly tighten and install expansion screws or expansion suspenders 3-6 meters away from the ground.
Extended data
Matters needing attention in construction
1, drilling depth: the relevant information introduces the length of the expansion pipe, but I found that this depth is not enough in the specific construction, which may be related to the amount of debris left in the hole, so you'd better be about 5 mm deeper than the length of the expansion pipe. As long as you are greater than or equal to the length of the expansion pipe, the length of the expansion bolt left in the ground is equal to or less than the length of the expansion pipe.
2. Of course, the requirement of the expansion bolt on the ground is that the harder the better, which also depends on the stress of the object you need to fix. The mechanical strength of concrete (C 13- 15) is five times that of brick.
3. After M6/8/10/12 expansion bolt is correctly installed in concrete, its most unsatisfactory maximum static stress is120/170/320/510kg respectively.
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