17

2021-07

Feedback of HDD hole opener

Video of HDD hole opener, totally drilled 1600 meters.

2021-07-17

23

2021-04

Rock piling core barrel operating suggestions

How to operate core barrel on rotary drilling rigs

2021-04-23

23

2021-04

How to weld roller cones on core barrel

Drawings and way of welding roller cones on core barrel

2021-04-23

25

2019-03

Comparison pictures of Regular Inserts Shapes in TCI Tricone Bits

The basic requirement for teeth is high rock breaking efficiency and long life.

2019-03-25

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