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DHD380A Shank DTH Drill Bits from YKDrill are engineered for large-diameter drilling in medium to hard rock formations. With concave and convex-concave face options and domed carbide buttons, these bits deliver strong impact resistance, excellent wear life, and high penetration efficiency.
Available in 203mm to 305mm diameters, the DHD380A series is ideal for mining, quarrying, large-diameter water wells, geothermal projects, and heavy civil construction.
| Head Shape | Head Diameter (mm) | Shank Length (mm) | Spline | Port Holes | Button Type | Gauge Buttons | Front Buttons | Weight (Kg) |
|---|---|---|---|---|---|---|---|---|
| Concave Face | 203 | 350 | 10 | 2 | Domed | 10 × Ø18mm | 4 × Ø18mm + 10 × Ø16mm | 48.5 |
| Concave Face | 216 | 350 | 10 | 2 | Domed | 10 × Ø18mm | 4 × Ø18mm + 10 × Ø16mm | 52.1 |
| Concave Face | 230 | 350 | 10 | 2 | Domed | 12 × Ø18mm | 1 × Ø18mm + 6 × Ø16mm | 54.8 |
| Concave Face | 235 | 350 | 10 | 2 | Domed | 12 × Ø18mm | 1 × Ø18mm + 8 × Ø16mm | 55.5 |
| Concave Face | 254 | 350 | 10 | 2 | Domed | 12 × Ø18mm | 1 × Ø18mm + 8 × Ø16mm | 62.4 |
| Convex-Concave Face | 275 | 350 | 10 | 2 | Domed | 12 × Ø18mm | 8 × Ø16mm + 19 × Ø16mm | 69 |
| Concave Face | 305 | 350 | 10 | 3 | Domed | 15 × Ø18mm | 12 × Ø16mm + 23 × Ø16mm | 77.6 |
✅ DHD380A Shank – Standard fit for most DHD380A hammers
✅ Concave & Convex-Concave Faces – Optimized for large-hole stability and drilling speed
✅ Domed Carbide Buttons – Excellent wear resistance and long tool life
✅ Enhanced Air Flushing – Multi-port design for cooling and hole cleaning
✅ Robust Alloy Steel Body – Heat-treated for strength and reliability
✅ Precision Engineering – Ensures energy transfer and borehole straightness
⛏️ Mining & Quarrying – Large-diameter blast holes and production drilling
💧 Water Well Drilling – Reliable for big bore water wells
🌡️ Geothermal Energy – Effective in deep, high-temperature formations
🏗️ Civil Engineering – Foundation piling, dam and tunnel projects
📦 Packaging: Wooden case or steel rack
📌 MOQ: 2 pieces
⏱️ Lead Time: 5–10 working days
🚢 Shipping: By sea, air, or express
🏭 Direct Manufacturer – 15+ years in DTH drilling tools
📐 Customization – Face type, button shape, flushing holes available
🔍 Strict QC – 100% inspection before delivery
🌍 Global Supply – Exported to 40+ countries
💬 Fast Support – Quick technical and after-sales assistance
Need reliable large-diameter DHD380A DTH drill bits? Contact YKDrill today for competitive prices and professional service.
💼 Company: YKDrill
📧 Email: ykdrill@ykdrill.com
🌐 Website: www.ykdrill.com
