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Spiral blade channels support flushing and cuttings evacuation.
The recessed center helps guide the bit and stabilize the cutting face.
Four-wing layout balances cutting efficiency and stability.






| Product type | Four-wing spiral concave coreless PDC drill bit |
|---|---|
| Cutting structure | Four spiral blades with concave center and fixed PDC cutters |
| Primary applications | Water wells, geological exploration, mining and engineering drilling |
| Recommended formations | Soft to medium formations; cutter and flushing design require project confirmation |
| Size | 95.3 mm / 3 3/4" · 114.3 mm / 4 1/2" · 149.2 mm / 5 7/8" · 165.1 mm / 6 1/2" · 200.0 mm / 7 7/8" · 215.9 mm / 8 1/2" · 244.5 mm / 9 5/8" · 250.8 mm / 9 7/8" · 311.2 mm / 12 1/4" · 323.9 mm / 12 3/4" · Custom Size |
| Connection | Male Thread · Female Thread |
| Connection | Threaded connection matched to the customer's drill string |
| Customization | Diameter, connection, cutter layout, waterways, hardfacing, color, logo and packaging |
Send diameter, thread/connection, formation description, target depth, rig model, flushing method and quantity. Photos or geological reports improve configuration accuracy.
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