Insert Tricone Rotary Bit,water Well Drilling Equipment ,drilling for Groundwater

Techinal data
| Technical data | ||||||||
| IADC | WOB | RPM | Applicable Formations | |||||
| Kn/mm | r/min | |||||||
| 417 | 0.35-0.9 | 150~70 | Very soft formation with low compressive strength and high drillability,such as clay,mudstone,gypsum,salt, soft shale,soft limestone,etc. | |||||
| 437 | ||||||||
| 447 | ||||||||
| 517 | 0.35-0.95 | 150~60 | soft formation with low compressive strength and high drillability,such as mudstone,gypsum,salt, soft shale,soft limestone,etc. | |||||
| 527 | ||||||||
| 537 | 0.45-1.0 | 120~50 | soft to medium formation with low compressive strength and high drillability,such as medium soft shale,edium soft limestone,medium soft sandstone,medium formation with harder and abrasiver inerbeds,etc. | |||||
| 547 | ||||||||
| 617 | 0.45-1.1 | 90-50 | medium hard formation with high compressive strength,such as hard shale,limestone,sandstone,dolomite,etc | |||||
| 627 | ||||||||
| 637 | 0.5-1.2 | 80-40 | hard formation with high compressive strength,such as shale,limestone,dolomite,hard gypsum,marble,etc | |||||
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