







Reinforced Concave PDC Drill Bit A reinforced concave PDC drill bit series offered in three-wing and four-wing configurations for customized large-diameter drilling projects. Key Advantages Reinforced blades provide additional structural support. Concave profile assists guidance and stable cutting. Three-wing and four-wing configurations cover different cuttings-flow and stability requirements. Recommended Applications Customized water well drilling Mining and engineering boreholes Large-diameter drilling projects Available Specifications Available photographed configurations: Model 220 / 4-Wing, Model 250 / 3-Wing, Model 250 / 4-Wing and Model 300 / 3-Wing. Actual diameter and thread must be confirmed. OEM/ODM Customization Diameter, thread connection, cutter layout, color and packaging can be customized. Please provide the target formation, drilling method, required connection and order quantity before production.
Thickened blade structures provide additional support for custom large-diameter designs.
The recessed center assists centering and stable cutting.
Photographed configurations include Model 220, 250 and 300 in three-wing or four-wing layouts.



| Product type | Reinforced concave coreless PDC drill bit |
|---|---|
| Cutting structure | Reinforced three-wing or four-wing concave fixed-cutter structure |
| Primary applications | Custom water-well, mining and large-diameter engineering drilling |
| Recommended formations | Actual diameter, thread, cutter layout and formation require confirmation |
| Configuration | Model 220 / 4-Wing · Model 250 / 3-Wing · Model 250 / 4-Wing · Model 300 / 3-Wing |
| Connection | Threaded connection matched to the customer's drill string |
| Customization | Diameter, connection, cutter layout, waterways, hardfacing, color, logo and packaging |
Performance depends on formation, rig parameters, flushing and operating practice. Final configuration should be confirmed by the technical team.
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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