long service life and durabe 8 1/2" IADC637 TCI tricone bit/TCI tricone roller bit for oil, gas, mining
|
|
API standard TCI tricone bits / steel tooth tricone bits2016-05-24 09:56:43 |
9 7/8"IADC617 TCI tricone drill bits2016-05-24 09:56:40 |
8 1/2"IADC617 TCI tricone drill bits2016-05-24 09:56:40 |
13 5/8"IADC517 TCI tricone button bits2016-05-24 09:56:40 |