DHD 350 Down The Hole Drilling Tools for Mining and Water Well Drilling

PRODUCT DESCRIPTION




Wholesales Down The Hole Low/High Air/Pressure 3" 4" 5" 6" 8" 10" DTH bit /DTH
hammer

Construction machinery parts 3" 4" 5" 6" 8" 10" DHD/Ql/Cop/Misson/SD DTH Hammer
and DTH steel Bits for Mining/Water well Drilling

Our tools are widely used in different drilling applications including
mining,quarrying, water well drilling, geotechnical industries and etc.

In DTH drilling, 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 drilling a nearly
constant penetration rate regardless of hole length.


DTH Hammer Types coverage: DHD/COP/HD/IR/TD/COPROD/QL/SD/Mission/Numa/Mach etc.




Roschen DTH Hammer Technical Parameters
Hammer Size(inch) Bit Shank Connection Thread Suitable bit
Working pressure Air consumption
1-3" BR1 RD40 box ¢64-¢76mm 0.7-1.75Mpa 0.7Mpa
4.5m3/min 1.0Mpa 4m3/min
BR2 RD50 box ¢70-¢90mm 0.7-1.75Mpa 1.4Mpa 5m3/min
BR3 API 2 3/8" Reg ¢90-¢110mm 0.7-1.75Mpa
3" DHD3.5 API 2 3/8"Reg ¢90-¢110mm 1.0-1.5Mpa 1.0Mpa
4.5m3/min 1.5Mpa 9m3/min
COP32/COP34
M30
4" DHD340 API 2 3/8"Reg ¢105-¢130mm 1.0-2.5Mpa 1.0Mpa 6m3/min
1.8Mpa 10m3/min 2.4Mpa 15m3/min
COP44
QL40
SD4
M40
6" DHD350 API 4 1/2"Reg ¢200-¢279mm 1.0-2.5Mpa 1.0Mpa 15m3/min
1.8Mpa 26m3/min 2.4Mpa 34m3/min
COP54
QL50
SD5
M50
8" DHD380 API 4 1/2"Reg ¢200-¢279mm 1.0-2.5Mpa 1.0Mpa 15m3/min
1.8Mpa 26m3/min 2.4Mpa 34m3/min
COP84
QL80
SD8
10" SD10 API 6 5/8"Reg ¢254-¢330mm 1.0-2.5Mpa 1.0Mpa 22m3/min
1.8Mpa 40m3/min 2.4Mpa 55m3/min
NUMA100
12" DHD1120 API 6 5/8"Reg ¢305-¢381mm 1.0-2.5Mpa 1.0Mpa 30m3/min
1.8Mpa 56m3/min 2.4Mpa 78m3/min
SD12
NUMA120
NUMA125
15" ROS 150 API 6 5/8"Reg ¢530mm-¢660mm 1.0-2.5Mpa 1.0-2.5Mpa
24" ROS 240 API 6 5/8"Reg ¢775mm 1.0-2.5Mpa 1.0-2.5Mpa
Notes:
Any Spline is available
API Thread, Metzke, Remet thread is available!
Any special size of DTH bits will be available by requests.



DTH Bit Size range: 2"-32"(76-775mm)

1. High air pressure DTH hammer size from 3" to 12"(76mm-304mm)
2. Shank types including COP, QL,DHD, MISSION,HD,IR, SD,TD, etc.

3. Connect Thread : API 2 3/8" , API 3 1/2 , Reg-6 5/8"Reg etc.

4. Low air pressure DTH hammer includes CR series: CR90, CR110, CR150, etc.

5. Middle air pressure DTH hammer includes CBR series: CBR1, CBR2, CBR3, etc.


Why choose King Kong down the hole DTH hammer drilling tools ?

King Kong drilling tools are with more high cost effective!

High grade tungsten carbide inserts

Bit bodies manufactured from high grade steel and processed using state-of-the-
art CNC machinery and heat treatment


Our hammer and drills :
For Quartz sandstone, it can drill 70 to 80m deep;
For Iron ore, copper ore, metal ore, basalt, etc, it can drill 700 to 800 m
deep;
For limestone, it can drill 2000 to 3000 meters deep;
For coal mine, it can drill over 4000 meters .


Depending on the geology, we can improve the performance by about 30%


Roschen DTH Hammer, Bits can compete Sandvik, our products are more high cost
effective;
Comparing with the second best Atlas Copco in the world, ours is absolutely
superior to theirs.





Product Overview
DHD 350 Down The Hole Drilling Tools for Mining and Water Well Drilling 0





The characteristics of High Air pressure DTH Hammer with foot valve

Valve air distribution, more reliable.
Simple design of the poston, long life.
More Efficient energy transfer, faster drilling speed, lower air consumption
and low oil consumption.
Fewer internal parts, simple structure, longer life, less failure and easier to
maintain because all the parts are heat treated.
Easy to disassemble because the top sub, the drive chuck and the external
cylinder are connected by multi-step thread.


The characteristics of High Air pressure DTH Hammer without foot valve

Out of the trouble of foot valve fracture and expansion and contraction.
Lower energy consumption and higer impact frequency. The drilling speed is 15%
to 30% higher than the one with foot valve.
Simple structure, reliable parts, long life, easy and cheap maintenance.
Lower air and oil consumption. The oil consumption is about 10% lower than the
one with foot valve.

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