Foundation drilling, how to extract the rock core efficiently is one key to reduce drilling cost！

The most case, it is difficult to extract the rock core when the dia. increasing, need to use specially designed tool to break the rock core and take it out of the borehole.

1. Check the coring barrel design :
https://coringbarrel.com/resource/coring-barrel/

2. Whats the difference between IADC 637single tricone bit with Piling roller bit?
https://coringbarrel.com/piling-roller-bit/

3. how to select the quality roller bit for rock core barrel?
https://coringbarrel.com/products/roller-bit/

Видео Foundation drilling, how to extract the rock core efficiently is one key to reduce drilling cost！ канала FIRMTECH