Changsha Sollroc Engineering Equipments Co., Ltd
FOCUS IN MANUFACTURING OF HIGH QUALITY DTH AND RC DRILLING TOOLS.
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Size 5'' QL50 Down The Hole Drill Hammer with Thread API REG for Construction
Product Description:
The DTH drilling method is growing in popularity, with increases in all application segments, including blast-hole, water well, foundation, oil & gas, cooling systems and drilling for heat exchange pumps. And applications were later found for the underground, where the direction of drilling is generally upwards instead of downwards.
Product Advantages:
1. Lower noise level at the worksite, due to the hammer working down the hole.
2. Reduced risk of getting stuck in fractured and faulted rock conditions.
3. Good hole cleaning, with plenty of air for the hole cleaning from the hammer.
4. Lower cost on drill rod consumables, due to drill string is not subjected to heavy percussive force as with top hammer drilling and drill string life is therefore greatly lengthened.
5. Efficient energy transmission and deep hole drilling capacity, with constant penetration and no energy losses in joints through the drill string from start to finish of the hole, as with top hammer.
DTH Hammer Specification:
QL50 hammer
| QL50 | |
| Length(less bit) | 1156mm |
| Weight (less bit) | 73kg |
| External diameter | 125mm |
| Bits shank | QL50 |
| Bits diameter | 130-156mm 5 1/8" - 6 1/8" |
| Connection thread | API 3 1/2" Reg |
| Air pressure | 1.0-2.5Mpa |
Other size Model: QL30, QL40, QL50, QL60, QL80
| QL40 | QL50 | QL60 | QL80 | |
| Length(less bit) | 1097mm | 1156mm | 1212mm | 1463mm |
| Weight (less bit) | 41.0kg | 73.0kg | 95.0kg | 192.0kg |
| External diameter | 99mm | 125mm | 146mm | 180mm |
| Bits shank | QL40 | QL50 | QL60 | QL80 |
| Bits diameter | 105-135mm 4 1/8" - 5 1/8" | 130-156mm 5 1/8" - 6 1/8" | 152-203mm 6" - 8" | 200-279mm 7 7/8" - 11" |
| Connection thread | API 2 3/8" Reg | API 3 1/2" Reg | API 3 1/2" Reg | API 4 1/2" Reg |
| Air pressure | 1.0-2.5 Map | 1.0-2.5Mpa | 1.0-2.5Mpa | 1.0-2.5Mpa |
Detailed Photos:
Application: