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Brand Name : MTH
Model Number : DHD 3.5
Certification : ISO9001
Place of Origin : CHINA
MOQ : 1 Piece
Price : Negotiable
Payment Terms : T/T, Western Union, MoneyGram
Supply Ability : 10000 pieces per month
Delivery Time : 10-15 days
Packaging Details : wooden case
Product name : DTH Hammer
Machine type : Drilling Tool,Drilling Equipment
Application : Rock Drilling,quarry,water well drilling,mining or welling drilling
Connect thread : API 2 3 / 8 REG
Hole range : 155mm-190mm
Size : 3 - 12 inches
Color : Blue,Gold,Red,blue or customized
Material : Carbon Steel,Tungsten Carbide & Steel
Advantage : High Performance,High Wear Resistant,High-efficiency
Diameter : 3 inches ( 76mm )
Application:
Be used for drilling in mining, quarrying, exploration, water-well, geothermal, and construction / geotechnical projects
Description:
“DTH” is the short for “Down The Hole” and sometimes it is also called “RAB” in some markets, “RAB” is short for “Rotary Air Blasting”.
Specifications:
| Technical Data | |||||
| Length(Without Bit) | 930mm | 1030mm | 1214mm | 1160mm | 1248mm | 
| Weight(Without Bit) | 25.00 kg | 39.00 kg | 76.50 kg | 72.50 kg | 100.00 kg | 
| External Diameter | 82mm | 99mm | 126mm | 126mm | 142/144/146/148mm | 
| Bit Shank | DHD3.5 | COP44/DHD340 | COP54/DHD350R | ND55C/DHD350Q | COP64/DHD360 | 
| Hole Range | 90-110 mm | 110-135 mm | 135-155 mm | 135-155 mm | 155-190 mm | 
| Connect ion Thread | API 2 3/8”Reg | API 2 3/8”Reg | API 2 3/8”Reg API 3 1/2”Reg API 2 7/8”Reg | API 2 3/8”Reg API 3 1/2”Reg API 2 7/8”Reg | API 3 1/2”Reg 
 | 
| Working Pressure | 1.0- 1.5 Mpa | 1.2-2.0 Mpa | 1.3-2.3Mpa | 1.3-2.3 Mpa | 1.5-2.5 Mpa | 
| Inpact Rate at 17 Bar | 28HZ | 27HZ | 25HZ | 25HZ | 23HZ | 
| Reccfurended Rotation Speed | 25-40 "min | 25-40 r/min | 20-35 r/min | 20-35 r/min | 20-30 r/min | 
| Air Consunption | 1.0Mpa :4.5 m3/min | 1.0Mpa :6m3/min | 1.0Mpa:9 m3/min | 1.0Mpa:9m3/min | 1.0Mpa :10 m3/min | 
| 1.5Mpa:9.0m3/min | 1.8Mpa:10m3/min | 1.8Mpa:15m3/min | 1.8Mpa:15m3/min | 1.8Mpa:20m3/min | |
| 
 | 2.4Mpa:15m3/min | 2.4Mpa:23m3/min | 2.4Mpa:23m3/min | 2.4Mpa:28.5m3/mi | |
Package:
Wooden case
Advantage:
1. superior alloy steel and robust design.
2. saving oil
3. 10%-20%lower air consumption
4. 15%-20% faster penetration than conventional DTH hammer
5. wording pressure 6 Bar to 35 Bar(0.6~ 3.5Mpa)




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