Depending on the construction materials, the types of rail insulators selected are different, and the drilling methods of rail insulators are different.

There are four common methods:

Rotary drilling: drilling without impact, used for hollow bricks and low strength building materials, to avoid drilling too much or damage to the hollow brick

The structure of... Here is another tip for non-impact drilling: Grind the carbide bit like a steel bit to make it sharp

Sharp. It'll make the hole faster. Of course, special wall drills are also available.

Percussion drilling: Rotary and high-frequency mild percussion for solid construction materials with tight structures.

Hammer drilling: Rotary plus low frequency heavy impact for solid construction materials with tight structure.

Diamond or hollow bit drilling: mainly used in the case of large drilling diameter or dense substrate reinforcement.

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