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Tricone bit VS Piling Roller Bit
Piling roller bit is similiar to Tricone bit design, but its cone, leg and grease system quite different, also the way to use.
How to extract rock core efficiently?
After cutting by core barrel, the pecentage for extract whole piece rock core directly is only 20-40 %. Drill rock core by cross core barrel or rock drilling buckets? NO!!!
The Common Problems facing when using Roller Bit Core Barrel
A lot of reasons can cause roller bit core barrel’s premature failure, such as wrong welding angle, too high rotating speed or drilling weight, or just the complex soil formation, here we analysis them together.
How To Make Roller Bit Core Barrel?
Here are 7 control points for ensuring the welding quality of roller bit core barrel