Certification: | ISO 9001:2000, SGS |
---|---|
Standard: | GB |
Surface Treatment: | Spray-Paint |
Samples: |
---|
Customization: |
---|
Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
---|
Payment Method: |
![]() ![]() ![]() ![]() ![]() ![]() ![]() |
---|---|
Initial Payment Full Payment |
Currency: | US$ |
---|
Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
---|
Suppliers with verified business licenses
High Air pressure DTH bit.DTH bit is our company main product. After many years search, we have rich experience in development and manufacture which adopted high-quality raw materials, advanced craft technology and passed through strictly inspection, manufacturing high quality products. If you interested in our product please contact freely.
DTH drill bits function by utilizing compressed air or other drilling fluids to power the drilling process. When coupled with a DTH hammer, the drill bit is driven into the rock formation, creating boreholes of various diameters and depths. The following steps outline the primary functions of DTH drill bits:
Energy Transfer: The DTH hammer delivers high-impact energy to the drill bit, which is transmitted through the bit to the rock formation. This energy transfer mechanism allows the bit to penetrate the rock surface efficiently.
Rock Penetration: As the drill bit rotates and strikes the rock formation, the cutting elements (such as carbide inserts) on the bit's face break down the rock into small particles. This process continues as the bit advances deeper into the formation.
Chip Evacuation: The internal design of the DTH drill bit facilitates the removal of drilling chips from the borehole. Proper chip evacuation is essential to prevent bit jamming and maintain drilling efficiency.
Cooling and Lubrication: During drilling, the DTH drill bit generates heat due to friction with the rock. Effective cooling and lubrication mechanisms, such as flushing holes and drilling fluids, help dissipate heat and reduce wear on the bit.
Borehole Quality: The ultimate function of a DTH drill bit is to produce high-quality boreholes with precise dimensions and smooth walls. Achieving optimal borehole quality is crucial for various applications, including blasting, sampling, and installing casing.
3 Inch Hight Air Pressure DTH bits | |||||
Model | Bit Dia.(mm) | NO. X Button Dia. | NO.Air Holes(PCS) | Weight(KG) | |
Gauge | Front | ||||
MDHM30-85 | 85 | 6*Φ13 | 4*Φ12 | 2 | 4.5 |
MDHM30-90 | 90 | 6*Φ14 | 4*Φ12 | 2 | 4.7 |
MDHM30-95 | 95 | 6*Φ14 | 4*Φ13 | 2 | 4.9 |
MDHM30-100 | 100 | 6*Φ14 | 5*Φ12 | 2 | 5.0 |
MDHM30-105 | 105 | 6*Φ14 | 5*Φ13 | 2 | 5.5 |
4 inch high air pressure DTH bits | |||||
MDHM4-105 | 105 | 6*Φ14 | 5*Φ13 | 2 | 6.0 |
MDHM4-110 | 110 | 7*Φ14 | 6*Φ13 | 2 | 6.2 |
MDHM4-115 | 115 | 7*Φ14 | 6*Φ13 | 2 | 6.6 |
MDHM4-120 | 120 | 8*Φ14 | 7*Φ13 | 2 | 7.0 |
MDHM4-127 | 127 | 8*Φ14 | 7*Φ13 | 2 | 7.4 |
5 inch high air pressure DTH bits | |||||
MDHM5-135 | 135 | 7*Φ18 | 6*Φ14 | 2 | 12.5 |
MDHM5-140 | 140 | 7*Φ18 | 7*Φ14 | 2 | 13.5 |
MDHM5-146 | 146 | 7*Φ18 | 7*Φ14 | 2 | 14.0 |
MDHM5-152 | 152 | 8*Φ18 | 8*Φ14 | 2 | 14.4 |
MDHM5-165 | 165 | 8*Φ18 | 8*Φ16 | 2 | 15.0 |
6 inch high air pressure DTH bits120 | |||||
MDHM6-152 | 152 | 8*Φ18 | 7*Φ16 | 2 | 22.0 |
MDHM6-165 | 165 | 8*Φ18 | 8*Φ16 | 2 | 23.0 |
MDHM6-171 | 171 | 8*Φ18 | 8*Φ16 | 2 | 24.0 |
MDHM6-190 | 190 | 9*Φ18 | 9*Φ16 | 3 | 25.0 |
MDHM6-203 | 203 | 9*Φ18 | 11*Φ16 | 3 | 28.0 |
8 inch high air pressure DTH bits | |||||
MDQL80-305 | 305 | 12*Φ18 | 29*Φ16 | 4 | 95.0 |
MDHM8-203 | 203 | 10*Φ18 | 10*Φ16 | 2 | 35.0 |
MDHM8-216 | 216 | 10*Φ18 | 12*Φ16 | 2 | 40.0 |
MDHM8-241 | 241 | 12*Φ18 | 18*Φ16 | 2 | 54.0 |
MDHM8-254 | 254 | 12*Φ18 | 21*Φ16 | 3 | 57.0 |
MDHM8-305 | 305 | 12*Φ18 | 29*Φ16 | 4 | 77.0 |
10 inch high air pressure DTH bits | |||||
MDHM100-254 | 254 | 12*Φ18 | 20*Φ16 | 3 | 90.0 |
MDHM100-305 | 305 | 12*Φ18 | 36*Φ16 | 4 | 102.0 |
MDHM100-311 | 311 | 12*Φ18 | 36*Φ16 | 4 | 104.0 |
MDHM100-318 | 318 | 12*Φ18 | 38*Φ16 | 4 | 106.0 |
MDHM100-330 | 330 | 14*Φ18 | 42*Φ16 | 4 | 112.0 |
12 inch high air pressure DTH bits | |||||
MDHM120-305 | 305 | 12*Φ18 | 36*Φ16 | 4 | 152.0 |
MDHM120-311 | 311 | 12*Φ18 | 36*Φ16 | 4 | 158.0 |
MDHM120-330 | 330 | 16*Φ18 | 42*Φ16 | 4 | 165.0 |
MDHM120-356 | 356 | 16*Φ19 | 48*Φ16 | 4 | 178.0 |
MDHM120-381 | 381 | 16*Φ19 | 48*Φ18 | 4 | 195.0 |
MDHM125-305 | 305 | 12*Φ18 | 36*Φ16 | 4 | 170.0 |
MDHM125-311 | 311 | 12*Φ18 | 36*Φ16 | 4 | 173.0 |
MDHM125-330 | 330 | 16*Φ18 | 42*Φ16 | 4 | 182.0 |
MDHM125-356 | 356 | 16*Φ19 | 48*Φ16 | 4 | 191.0 |
MDHM125-381 | 381 | 16*Φ19 | 48*Φ18 | 4 | 200.0 |
It is widely used in earth and stone engineering mining Wells drilling construction projects drilling Wells edge pillar support.
1.Pre-sale service:
Act as a good adviser and assistant of clients enable them to get rich and generous returns on their investments .
1.Select equipment model;
2.Design and manufacture products according to client's special requirement ;
3.Train technical personnel for clients .
1.Pre-check and accept products ahead of delivery .
2. Help clients to draft solving plans .
Provide considerate services to minimize clients' worries.
1.Complete After-sales service,professional engineers available to service machinery at home or oversea.
2. 24 hours technical support by e-mail.
3.Other essential technological service.
Packed by Carton or Wooden cases.
Delivery:
Transprotation: By air, By Express or By sea / By train , according to your requests.
1. How to order the products?
A: Please send the inquiry with detail item description or with Model number.
2. Can I expect a quality products?
A: Yes. mature production technology ensuring the quality satisfy international request.
3. How to check the product are the exact one you want?
A: If possible, please attach one reference picture to avoid any misunderstanding or any links from ourwebsite for a better understanding.
4. How to make sure the quality?
A: More than 40 Years engineer to make sure the quality, 100% inspection.
5. What is the general delivery time?
A: 15 working days for DTH bits.
20-25 working days for DTH hammer
3-5 working days for ex stock items.
6. Methods of Payment
A: T/T (Telegraphic Transfer) or Western Union.
Suppliers with verified business licenses