Detail
| Cutting Dia. | Spiral Height | Spiral Pitch | Shell Thk. | Spiral OD. | Center Tube OD. | Teeth No. | Weight |
| 600 | 1400 | 350 | 20/30 | 550 | 180 | 4+2 | 550 |
| 800 | 1400 | 350 | 20/30 | 750 | 219 | 6+4 | 820 |
| 900 | 1400 | 400 | 20/30 | 850 | 219 | 6+5 | 980 |
| 1000 | 1400 | 400 | 20/30 | 950 | 219 | 6+6 | 1100 |
| 1200 | 1400 | 400 | 20/30 | 1150 | 273 | 6+8 | 1360 |
| 1500 | 1400 | 400 | 20/30 | 1450 | 273 | 6+11 | 1850 |
Features
-Design as straight type , better for carry soil.
-Double cutter bearing uniform force , can avoid inclined hole .
-Double spiral easy to carry soil , but meet cohesive soil , single spiral is easy to dump spoil.
-Applicable layers: clay , high-weathered layer , gravel etc .
Remark:
-Cutting DIA. Custom : design various cutting diameter based on demand.
-Spiral HlT.Custom : design as demand, prolong or shorten, increase amount of perdrilling, improve efficiency.
-Spiral Pitch Custom : adjust the spiral pitch according to different working condition.
-Teeth Custom : equiped different teeth, like bullet teeth, flat teeth according todifferent working condition.
-Key Component Reinforce Custom : strengthen the key component to extend life cycle.
-Kelly Box Custom : custom kelly box size based on the kelly bar, such us 130*130,150"150,200200,250*250 etc.
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