| 1. | Accord with down hole hammer from ingersoll - rand
与ingersoll - rand公司相通用的钻头 |
| 2. | Accord with down hole hammer from atlas - copco
与atlas - copco公司相通用的钻头 |
| 3. | Model kqy90 hydro - pneumatic down hole drill rig
90型气液联动潜孔钻机 |
| 4. | Accord with down hole hammer from bulro
与bulro公司相通用的钻头 |
| 5. | Specification for gas lift down hole equipment
气举井下装置 |
| 6. | Tb - down hole hammer tw - down hole hammer
多选用平口和凹心型 |
| 7. | Settlement of one specially complex down hole accident in bored pile
一起特殊复杂的钻孔灌注桩孔内事故处理 |
| 8. | Model tc308 high pressure crawler type down hole drill rig for open use
中高风压潜孔钻机在中深孔凿岩中的试验应用 |
| 9. | Down hole hammer and bit
潜孔冲击器及钻头 |
| 10. | Down hole problem
井下复杂情况 |
