DTH Bit
DTH Hammer Bits
Down-The-Hole (DTH) Hammer Bits are used with DTH hammers; compressed air drives the hammer to generate high-frequency impact energy, directly transferred to the bit to break rock. Suitable for medium-hard to ultra-hard rock drilling.
Product Overview
DTH (Down-The-Hole) Hammer Bits use compressed air to drive DTH hammers generating high-frequency impact energy, directly applied to the bit to break rock. Compared with conventional rotary drilling, DTH drilling is more efficient and faster in hard rock formations.
Our DTH bits are manufactured by certified partner factories using premium tungsten carbide (TCI) button inserts with excellent wear resistance, suitable for various rock formations. Compatible with international standard hammers including DHD, QL and Mission, meeting global customer needs.
Bit Types
Standard Button Bits
Standard TC buttons, suitable for general hard rock formations
Double Gauge Bits
Double gauge design maintains stable hole diameter, reduces deviation
High Air Pressure Bits
Optimized exhaust design, suitable for high-pressure hammers
Flat Bottom Bits
Flat layout, suitable for overburden and soft rock
Core Advantages
Efficient Impact
High-frequency impact energy directly applied to rock, high breaking efficiency
TCI Wear-Resistant Buttons
Premium tungsten carbide buttons, excellent wear resistance, long service life
Low Deviation
Double gauge design effectively controls drilling direction, reduces deviation
International Compatibility
International standard threads, globally universal
Technical Specifications
| Parameter | Specification |
|---|---|
| Bit Diameter | 76mm - 305mm (3" - 12") |
| Compatible Hammers | DHD / DTH / CIR / Mission / QL |
| Applicable Rock | Medium-Hard to Ultra-Hard Rock |
| Flushing Method | Direct / Reverse Circulation |
| Button Material | Tungsten Carbide (TCI) |
| Connection Thread | DHD / QL / Mission |
| Drilling Depth | 0-300m |
Size Reference Table
| Size (mm) | Compatible Hammer | Button Rows | Application |
|---|---|---|---|
| 89 | DHD3/QL40 | 3-4 rows | Shallow wells |
| 102 | DHD3/QL40 | 3-4 rows | Medium deep wells |
| 127 | DHD4/QL50 | 4-5 rows | Deep wells |
| 140 | DHD4/QL50 | 4-5 rows | Deep wells/Hard rock |
| 152 | DHD5/QL60 | 5-6 rows | Ultra-hard rock |
Price Range
| Type | Price Range (USD) | Minimum Order |
|---|---|---|
| Standard DTH Bits | $55-58 | 1 pc |
| Double Gauge/High Pressure | $250-400 | 1 pc |
Application Areas
Mining
Open-pit mine blast hole drilling, ore mining
Water Well Drilling
Large diameter water wells, supply wells
Foundation Engineering
Pile construction, anchorage engineering
Geothermal Development
Geothermal well drilling
Tunnel Engineering
Tunnel advance drilling
Geological Exploration
Exploration drilling, sampling
