Tungsten Carbide Dow The Hole Button Bits Rock Drilling High Middle Low Pressure
Description
DTH (Down to Hole) drill bit, also called spline connected drill bit, is mainly used in large scale mine (open and underground), open quarry and construction. The hammer is situated down the hole in direct connected with the drill bit with splines in the bit. The hammer piston strikes the drill bit resulting in an efficient transmission of the impact energy and insignificant power losses with the hole depth.
Application
DTH drill bits range covers the most diverseapplications in mining, natural resources exploration, water wells, quarries and civil works.
specification
| Drill Bit | Bit Dia. (mm) | Air Holes No. | Gauge Buttons | Front Buttons |
| mm | inch |
| MHD275 | 311 | 12 1/4 | 3 | 15*Φ18 | 36*Φ16 |
| 334 | 13 1/7 | 3 | 18*Φ19 | 44*Φ18 |
| 356 | 14 | 3 | 18*Φ19 | 48*Φ18 |
| 368 | 14 1/2 | 3 | 20*Φ19 | 50*Φ18 |
| 381 | 15 | 4 | 20*Φ19 | 54*Φ19 |
| MHD330 | 381 | 15 | 4 | 20*Φ19 | 54*Φ18 |
| 406 | 16 | 4 | 20*Φ19 | 58*Φ18 |
| 431 | 17 | 4 | 20*Φ19 | 64*Φ18 |
| 445 | 17 1/2 | 4 | 24*Φ20 | 72*Φ18 |
| 470 | 18 1/2 | 4 | 24*Φ20 | 80*Φ18 |
| MHD475 | 495 | 19 1/2 | 4 | 24*Φ20 | 88*Φ18 |
| 525 | 20 2/3 | 4 | 24*Φ20 | 100*Φ18 |
| 580 | 22 7/8 | 4 | 24*Φ20 | 116*Φ18 |
| 660 | 26 | 4 | 28*Φ20 | 140*Φ19 |
| 680 | 26 3/4 | 4 | 28*Φ20 | 144*Φ19 |
| MHD525 | 711 | 28 | 4 | 28*Φ20 | 154*Φ19 |
| 762 | 30 | 4 | 32*Φ20 | 172*Φ19 |
| 780 | 30 3/4 | 4 | 32*Φ20 | 180*Φ19 |
| 825 | 32 1/2 | 4 | 36*Φ20 | 216*Φ19 |
| 998 | 39 1/4 | 4 | 40*Φ20 | 348*Φ19 |
Advantages:
- Advanced bit designs with high power and air efficiency increases productivity
- Tailored product offering covers all your applications and conditions
- Easy service and maintenance designs reduces machine downtime
- Generic and proprietary shank options give you flexibility and reliability
Packing
Delivery
FAQ
1. Methods of Payment:
T/T (Telegraphic Transfer) or Western Union or L/C at sight
2. Handling time for an order
Based on order quantity, normally it takes 20 days for production.
in 3 working days after receiving the advance payment
3. Shipping way
Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air
Bulk order: we suggest by air or by sea.
4. Quality Control
We have our own experienced QC.
There will be strict inspection and testing for every order before shipping out.
5. After Services:
a. Our sales team will response for your question within 24 hours (Holidays Excluded)
b. Technical Support will be available in any time
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