Product selling point
The DTH bit is made of hard alloy blades and advanced heat treated high quality alloy steel, which ensures good drilling performance and long service life. It is widely used in the protection of well drilling and hard rock.
Item Description
Model | Diameter (mm) | Spline No. | Weight (kg) |
CIR65 | 68 | 6 | 2.50 |
CIR70 | 76 | 6 | 3.40 |
CIR80 | 83 | 6 | 3.45 |
CIR80X | 83 | 6 | 3.50 |
CIR90 | 90 | 6 | 3.50 |
CIR90 | 100 | 6 | 4.50 |
CIR90 | 130 | 6 | 9.50 |
CIR110 | 110 | 6 | 6.40 |
CIR110 | 123 | 6 | 8.50 |
CIR110W | 110 | 6 | 6.50 |
CIR110W | 123 | 6 | 8.80 |
CIR150 | 155 | 6 | 12.0 |
CIR150A | 155 | 6 | 12.5 |
CIR150A | 165 | 6 | 14.0 |
CIR170 | 175 | 6 | 15.5 |
CIR170A | 185 | 6 | 16.0 |
CIR200W | 200 | 6 | 48.0 |
Bit face shape selection
1. Center drop Bit
For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control.
2. Concave Face
The all-round application bit face specifically for medium hard and homogenerous rock formations. Good hole deviation control and good flushing capacity.
3. 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.
4. Double Gauge Face
This kind of face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high air pressures and good resistance to steel wash step gauge bit.
5. Flat Face Bit
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.
Carbide button shape selection
1. Domed/Round Button
2. Parabolic/Semi-Ballistic Buttons
3. Ballistic Button
4. Sharp Button
5. Flat Button
CIR series
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E-mail: zyzcjx@163.com
Add: No.11 Tongyang East Road,Jingzhang Olympic Park Area, Xuanhua District, Zhangjiakou City, Hebei, China
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