Selection Method Of Electric Drill

- Sep 12, 2017 -

In the case of indoor ceilings, the ceiling is made of reinforced concrete, such as the use of impact drilling hole will be a large contribution to the strength, but the use of the wall will not be the case, so impact drilling for the day-to-day use of the family, but for drilling staff, should be preferred hammer drill.
In the wall, the hammer drill will be more labor-saving than the impact drill, the key is that the structure and working principle of the two are different, the impact drill in the use of the process requires people to exert force and make it rotate, and in the use of hammer drill, just start with a little bit of force can make the drill go forward automatically.


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