17
2021-07
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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No.319-324, F1, Shoulashou Int'l. Autoparts Center,Shijing Road,Hejian City, Hebei Province, China
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