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Question:

What drills are used to drill the hard layer of the rotary drilling machine?

What drills are used to drill the hard layer of the rotary drilling machine?

Answer:

I want to know how thick and big the pebbles are in you. Strong, weak, weathered, with double door fishing sand drill (pick teeth) can

Xr220a rotary drilling machine drilling 2 meters hole can reach 80 meters, its maximum drilling depth is 80 meters, the maximum aperture is 2 meters.
What's the difference between the main oil pump imported from the rotary drilling rig and the home made main pump?
What's the market for small rotary drilling rigs? Do house foundations pile well?
What kind of geology is a rotary drill suitable for?
How much does a rotary rig for Sany cost? A?

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