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Your present location:Home > Products > DTH Bit > 8"High Air Pressure DTH Bits
8"High Air Pressure DTH Bits

ND85(DHD380/COP84)/NSD8/NQL80/NM8
China market:yang.riquan@xjgdrill.com
Overseas market:rick.liao@xjgdrill.com
Product details

    The drilling ability of the new diamond dive bit is powerful, reliable and low operating cost. Advanced production technology and exquisite design, as well as high quality material better performance, long service life, simplicity and durability. As a result, our drilling tools are widely used in drilling and mining and other areas of construction. We can't say that we are the first in China, but we are trying to be the customers in my mind! If you are interested in this kind of product, welcome to our website.

It is mainly used in geological exploration, coal mine, water conservancy and hydropower, highway, railway, bridge, building and so on.


8 Middle Air Pressure DTH Bits

 

ND85(DHD380COP84)

THE Drill Head Diameter(mm)

Spline Key Number

NO.Air Holes

Gauge Buttons   

Front Buttons

Weight(KG)

195

 -

3

9XØ18

9XØ16

33.0

203

2

10XØ18

1316

40.0

216

2

10XØ18

14XØ16

49.0

254

3

12XØ18

17XØ16

71.0

305

-

4

12XØ18

29XØ16

95.0

 

NSD8

195

 -

3

9XØ18

9XØ16

32.0

203

2

10XØ18

1216

37.0

216

2

10XØ18

14XØ16

48.0

254

2

12XØ18

21XØ16

70.0

305

 -

4

12XØ18

29XØ16

94.0

 

NQL80

195

 -

3

9XØ18

9XØ16

32.0

203

 -

2

10XØ18

1316

35.0

216

 -

2

10XØ18

14XØ16

49.0

254

 -

2

12XØ18

21XØ16

71.0

305

 -

4

12XØ18

29XØ16

95.0

 

 

NM8

203

 -

2

10XØ18

13XØ16

35.0

216

 -

2

10XØ18

1416

40.0

241

 -

2

12XØ18

18XØ16

54.0

254

 -

2

12XØ18

21XØ16

57.0

305

 -

4

12XØ18

29XØ16

77.0

WE can design and manufacture according to customers requirement of the bit diameter,the NO.of air holes,carbide buttons and the face shape.

Our Bit Face Shape Selection

Drop Center---For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures.Maximum hole deviation control.


Concave Face---The all-round application bit face specially for medium hard and homogenerous rock formations.Good hole deviation control and good flushing capacity.

Convex Face---For high penetration rates in soft to medium-hard with low to medium air pressures.It is the most resistance to steel wash, and may reduce the load and wear on the gauge buttons,but poor hole deviation control.

Double Gauge Face---This kind of face shape is suitable for fast penetration rates in medium to hard rock formation.Designed for high air pressures and good resistance to steel wash step gauge bit.


Flat Face---This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures.Good penetration rates an resistance to steel wash.


FAQ


Q: What's your delivery time?
A: Commonly produce need 20-25 days to produce. Within 3or 5 days if in stock.

Q: What methods of payment are accepted?
A: We agree T/T, L/C, West Union.

Q: What about the shipment?
A: Based on order quantity. 
    We can send it to you by Express, by Air, by Sea, and by Train. Or send the goods to your Chinese agent.

Q: How to control the quality?
A: We should be checking & testing everyone button bit before shipment.

Q: Do you agree sample order?
A: Yes, we are welcome your sample order to testing our quality.

Q: Can we select the button bit color?
A: Yes, We color the product according to the color you need.

Q: Can we change to our mark on the button bit?
A: Yes, we can casting your company mark on the button bit. (Except sample order).

Q: Do you have after-sale service and warranty service?
A: Any quality or quantity problem once confirmed, we will reply you within 24 hours and give you a solution.

Q: Can i trust your company?
A: Our company has been certificated by Chinese government, and verified by Alibaba Trade Assurance,100% refund of the Trade Assurance Amount. Alibaba can guarantee all of your payment, Just order from us!

Q: 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.



Domestic:+86 730 6808685

International:+86 731 89708148

Address:岳阳市平江工业园

yueyang city ping jiang industrial park


Email:China market:yang.riquan@xjgdrill.com
Overseas market:rick.liao@xjgdrill.com
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