long service life and durabe 8 1/2" IADC637 TCI tricone bit/TCI tricone roller bit for oil, gas, mining
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PDC oilfield drill bit for coal mine, mining, construction2016-06-03 00:03:20 |
PDC matrix bits for coal mine, mining, construction2016-06-03 00:03:20 |
PDC concave drill bit for coal mine,mining2016-06-03 00:03:20 |
PDC anchoring bit is mainly for drilling anchor-network2016-06-03 00:03:20 |
PDC drill bit is mainly used to drill Oil well, gas well, water well2016-06-03 00:03:20 |
PDC drag bit for water wells,mining2016-06-03 00:03:20 |
PDC Bit with 3-wing for Coal Mining and Stonework2016-06-03 00:03:19 |
Tricone Bits for Water Well and Oil Field2016-06-03 00:03:19 |
Tricone Bits for Water Well and Oil Field2016-06-03 00:03:19 |
12.5 inch tricone bit Tungsten carbide insert bit with good quality2016-06-03 00:03:19 |