| Customization: | Available |
|---|---|
| After-sales Service: | Warranty |
| Warranty: | 6 Months |
|
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Alloy Four-Wing Arc Angle Coreless Drill Bit For Mining.
Mainly used for: grouting holes, varsity discharge holes, slopes, supports, anchor cables, wells, and geothermal.
Applicable strata: red sandstone, mudstone, coal seam, backfill, weathered rock and medium and hard broken strata.
Common models: 75, 94, 113, 133mm.
Commonly used drill pipes: 42, 50, 63.5, 73, 76, 89.
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