12 Inch DTH Bits

12 Inch DTH Bits

Black diamond produce big size DTH hammer and bits, the size ranges from 3 inch to 24 inch, the big size dth hammer and bits are designed based on the characteristics of the wells, oil, gas and construction drilling, our company self-designed, developed and manufactured this kind of high air...

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Product Details

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Black diamond produce big size DTH hammer and bits, the size ranges from 3 inch to 24 inch, the big size dth hammer and bits are designed based on the characteristics of the wells, oil, gas and construction drilling, our company self-designed, developed and manufactured this kind of high air pressure DTH hammer and big size down the hole drilling bits.

 

It has the following advantages:

1. Adopt new rock drilling theory, optimizing the inside structure and the size of the air distribution, to make the DTH hammer obtain the optimal energy transfer and make it drill faster speed and lower air consumption.

2. For such projects as the drill bit break, retrieving difficultly, we specially designed a safe and reliable anti-shedding device for the bit.

3. The check valve can be replaced to the one with bigger air controlling hole to provide mopre efficient cuttings discharge.

4. The top sub and the drive chuck have special thread, which can be disassemble easily.

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DTH hammer

With professional manufacturing experience in DTH hammer production, our factory can supply you with high pressure and medium to low pressure DTH hammers. It strictly matches with API standard and other Chinese industry standards.It is durable for being produced with advanced craftwork and good material.

It also has the following advantages:

1. Deliver maximum energy to drilling bit, fast drilling speed and low air consumption due to the special inner structure of HD series DTH hammer designed according to newest rock drilling theory.

2. Smooth performance and long service life of HD series DTH hammer due to high quality alloy steel materials and advanced processing technology adapted.

3. Low problem rate and easy to maintenance due to simple, reliable and easy assemble and disassemble inner structure of hammer.

4. Easy to depart bit from hammer due to multi-head thread connecting chuck and cylinder of hammer.

5. Interchangeable with DTH bit and drill pipe


Drill Bit

Bit Dia.(mm)

NO.Air
Holes

Gauge
Buttons

Front
Buttons

Weight(Kg)

Part No.

DHD1120

305

4

12*Φ18

36*Φ16

152

DHD1120-305

311

4

12*Φ18

36*Φ16

157

DHD1120-311

330

4

16*Φ18

42*Φ16

165

DHD1120-330

356

4

16*Φ19

42*Φ16

178

DHD1120-356

381

4

16*Φ19

42*Φ18

198

DHD1120-381

SD12

305

4

12*Φ18

36*Φ16

156

SD12-305

311

4

12*Φ18

36*Φ16

168

SD12-311

330

4

16*Φ18

42*Φ16

180

SD12-330

356

4

16*Φ19

48*Φ16

191

SD12-356

381

4

16*Φ19

48*Φ18

200

SD12-381

NUMA120

305

4

12*Φ18

36*Φ16

152

N120-305

311

4

12*Φ18

36*Φ16

158

N120-311

330

4

16*Φ18

42*Φ16

165

N120-330

356

4

16*Φ19

48*Φ16

178

N120-356

381

4

16*Φ19

48*Φ18

195

N120-381

NUMA125

305

4

12*Φ18

36*Φ16

170

N120-305

311

4

12*Φ18

36*Φ16

173

N120-311

330

4

16*Φ18

42*Φ16

182

N120-330

356

4

16*Φ19

48*Φ16

191

N120-356

381

4

16*Φ19

48*Φ18

200

N120-381

 


These hammers offer:

Constant energy directly behind the bit, which provides more speed and accuracy

Longer working life

Low air consumption

Extra long check provides added protection and life to the external cylinder

Airflow volume provided efficient flushing for cleaner holes

Easy to assemble/disassemble, service and maintain

Portable and easy to operate

 

DTH Bit

DTH bit is our main product. After mang years search, we have rich experience in development and manufacturing high quality products, which adopted high-quality raw materials, advanced technology and passed through strictly inspection.

1.high and low air pressure down-the-hole drill bits
2. Low air pressure holeDia.:65-220mm

3. High air pressure hole Dia.:85-305mm

4. Face type:drop center/concave/convex/double gauge/flat

5. Our DTH Bit can be suitable for many types of DTH Hammer, such as XL, Mission, COP, IR, Mach, Demag, SD, Bulroc, Halco Mach, Digger etc.


Product photos

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