Active Member
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[China]
Address: Fengyubei Road, Liu yang High-tech Industrial Development zone, Changsha, Hunan, China
Contact name:Xie
Changsha Chaojingang machinery manufacturing CO., Ltd |
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Tungsten Carbide Drilling Tools Hole Drill Bit For Rock Mining And Engineering
| Product Name: | DTH Drilling Hammers And Button Bits With Long Service Life | |||||
| Description: | dth drilling hammers and button bits DTH hammers are used for high air pressure mining dth hammerblast hole drilling and water well drilling project. Working with DTH drilling pipe and DTH drill bit, mainly applied in Mining, Marble quarry or well drilling and other construction projects. | |||||
| Quality level: | 95% similarity to COP/SD/MISSION/QL/BR/DHD etc famous brand | |||||
| MOQ: | No requirement for testing and trial order | |||||
Feature
1. Suitable for high pressure drilling rigs
2. Water well drilling
3. Record breaking penetration
4. Exploring Civil Engineering Applications
5. Lowest cost per foot drilled
6. Simple & robust design
7. Exploring Civil Engineering Applications
8. Foot Valve not required in the bit
9. Longer parts life
10. Maximizes efficiency
11. Develops greater power for any compressor capacities
| Diameter | No ×Button diameter , mm | Button angle° | Flushing holes | Weight(Kg) | Part No | ||
| mm | inch | Gauge Buttons | Front Buttons | ||||
| 200 | 7 7/8 | 10×φ18 | 8×φ18+6×φ16 | 38 | 2×φ30 | 46 | CD85-200 |
| 203 | 8 | 10×φ18 | 8×φ18+6×φ16 | 38 | 2×φ30 | 47 | CD85-203 |
| 216 | 8 1/2 | 10×φ18 | 8×φ18+6×φ16 | 38 | 2×φ30 | 53 | CD85-216 |
| 219 | 8 5/8 | 10×φ18 | 8×φ18+6×φ16 | 38 | 2×φ30 | 54 | CD85-219 |
| 222 | 8 3/4 | 10×φ18 | 8×φ18+6×φ16 | 38 | 2×φ30 | 55 | CD85-222 |
| 225 | 8 7/8 | 10×φ18 | 8×φ18+6×φ16 | 38 | 2×φ30 | 56 | CD85-225 |
| 229 | 9 | 10×φ18 | 8×φ18+7×φ16 | 38 | 2×φ30 | 57 | CD85-229 |
| 235 | 9 1/4 | 12×φ18 | 20×φ16 | 38 | 2×φ30 | 58 | CD85-235 |
| 241 | 9 1/2 | 12×φ18 | 20×φ16 | 38 | 2×φ30 | 58 | CD85-241 |
| 254 | 10 | 12×φ19 | 8×φ18+18×φ16 | 38 | 2×φ30 | 61 | CD85-254 |
| 270 | 10 5/8 | 12×φ19 | 8×φ18+19×φ16 | 38 | 2×φ30 | 62 | CD85-270 |
| 280 | 11 | 12×φ19 | 9×φ18+21×φ16 | 38 | 3×φ26 | 67 | CD85-280 |
Mainly used for Quarrying,Ore Mining,Coal Mining, soft, medium hard, and hard rock,blast hole drilling and water well drilling project,Marble quarry or well drilling and other construction projects,etc.
Bit face shape selection:
1. Drop Center 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.
| Caibide BUtton Shapge |  | Domed / Spherical Button Domed / Spherical Buttons are usually used as gauge buttons of DTH Bits, suitable for very abrasive and very hard formations. |
 | Parabolic / Semi - Ballistic Buttons Parabolic Buttons are usually used as gauge buttons and front buttons of DTH Bits, suitable for medium abrasive and hard formations. | |
 | Ballistic Button Ballistic Buttons are usually used as front buttons of DTH BIts, suitable for medium abrasive and medium hard formations. They can also be used as gauge buttons if the rock is soft. | |
 | Sharp Button Sharp BUttons are usually used as front buttons of DTH bits for soft formations where fast penetration rates are possible and button breakage is minimal. | |
 | Flat Button Flat buttons are usually used as protection buttons to reduce wear on rubbing surfaces of DTH bits. |
