Reasons and Judgment of Drill Pipe Drill Down in Rotary Drilling Rig
Reasons and Judgment of Drill Pipe Drill Down in Rotary Drilling Rig After the current rotary drilling rig is used for a period of time, when the drill rod is raised or lowered to return the...
How to use drilling tools scientifically？
The bit is directly broken part of the rock, its shape, structure, material, processing technology, etc. directly affect the crushing effect and the life of the bit. The drilling requirements for the...
Rock drilling machinery and pneumatic tools
During operation, one hopper of the fuselage discharges material to both sides. The small diameter front wheel drives the steering wheel. The larger diameter rear wheels are the rollers. The engine...
Mr. Liu Bin
