2021 Good Quality Air Screw Compressor Machine - Factory price high air pressure dth rock drilling hammer – TDS
2021 Good Quality Air Screw Compressor Machine - Factory price high air pressure dth rock drilling hammer – TDS Detail:
In DTH hammers, the rock drilling bit is a continuation of the shank, which the rock drill piston strikes directly. Since the piston is in direct contact with the drill bit, little energy is lost. This gives DTH hammers a nearly constant penetration rate regardless of hole length.
• Small to medium size drilling diameters
• Works in low pressure range, capable of drilling shallow to medium hole lengths
| Model | Thread Connection | OD(mm) | Rec.Hole Size | Shank Style | Working Pressure(Bar) |
| CD35 | API 2 3/8″ Reg | φ82mm | φ90-φ105 |
DHD3.5 CD35 |
1.0-1.5Mpa |
| CD45 | API 2 3/8″ Reg | φ99mm | φ110-φ135 |
Cop44 DHD340 |
1.0-2.5Mpa |
| CSD4 | API 2 3/8″ Reg | φ99mm | φ110-φ135 |
SD4 CSD4 |
1.0-2.5Mpa |
| CQL40 | API 2 3/8″ Reg | φ99mm | φ110-φ135 |
QL40 CQL40 |
1.0-2.5Mpa |
| CD55 |
API 2 3/8″ Reg API 3 1/2″ Reg |
φ125mm | φ135-φ155 |
Cop54 DHD350R |
1.0-2.5Mpa |
| CSD5 | API 3 1/2″ Reg | φ125mm | φ135-φ155 |
SD5 CSD5 |
1.0-2.5Mpa |
| CQL50 | API 3 1/2″ Reg | φ125mm | φ135-φ155 |
Cop54 QL50 |
1.0-2.5Mpa |
| CD65 | API 3 1/2″ Reg | φ148mm | φ155-φ190 |
Cop64 DHD360 |
1.0-2.5Mpa |
| CSD6 | API 3 1/2″ Reg | φ148mm | φ155-φ190 |
SD6 CSD6 |
1.0-2.5Mpa |
| CQL60 | API 3 1/2″ Reg | φ148mm | φ155-φ190 |
Cop64 QL60 |
1.0-2.5Mpa |
| CD85 | API 4 1/2″ Reg | φ185mm | φ195-φ254 |
Cop84 DHD380 |
1.0-2.5Mpa |
| CSD85 | API 4 1/2″ Reg | φ185mm | φ195-φ254 |
SD8 CSD8 |
1.0-2.5Mpa |
| CQL80 | API 4 1/2″ Reg | φ185mm | φ195-φ254 |
QL80 CQL80 |
1.0-2.5Mpa |
| CSD10 |
API 4 1/2″ Reg API 5 1/2″ Reg |
φ225mm | φ254-φ311 |
SD10 CSD10 |
1.0-2.5Mpa |
| CN100 | API 6 5/8″ Reg | φ225mm | φ254-φ311 |
NUMA100 CN100 |
1.0-2.5Mpa |
| CSD12 | API 6 5/8″ Reg | φ275mm | φ305-φ445 |
SD12 CSD12 |
1.0-2.5Mpa |


Dth drilling Water well drilling

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