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Question:

How does the self-tapping screw fix the gypsum board on the light steel keel?

I feel the self-tapping screws do not drill into the light steel keel Hand drill use method is not directly to the back of the tapping screw inserted into the drill drill and then fixed on the light steel keel ah?

Answer:

With a pistol can be drilled, fixed gypsum board are using self-tapping screws ah
Gypsum board with the screw is not an ordinary self-tapping screws, its name is "dry wall nail", its structure and material and ordinary tapping screws are different, hardness, small diameter, long teeth, these features are easy It is easier to drill into hard objects. Although the light steel keel is steel, but the wall thickness is limited, the use of hand drill or wind can be easily approved by dry wall nails drill through it. On the dry wall nails to use a special batch of head, also known as the cross head, hand drill to use it to dry wall nails.

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