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Brazil Customer’s DTH Hammer Bits Delivery

DTH drilling is a percussion system driving a piston inside hammer body with up and down motion by compressed air and transmitting an intensive percussion energy to the bit to enable the drilling by crushing the rock. Drilling method by DTH hammer exerts high drilling performance especially for drilling hard rock and contributes for shortening work schedule. Hence, this method is widely utilized for foundation work, landslide prevention work, quarrying services, marine civil work, etc.


DTH hammers specifications:

HammersBit ShankConnection ThreadSuitable bitWorking pressureAir consumption
1-3" Middle-low pressure
DTH hammers
BR1
BR2
BR3
RD40 box
RD50 box
API 2 3/8" Reg
Φ64-Φ76mm
Φ70-Φ90mm
Φ90-Φ110mm
0.7-1.75Mpa0.7 Mpa4.5 m3/min
1.0 Mpa4 m3/min
1.4 Mpa5 m3/min
3" hammersDHD3.5
COP32/COP34
M30
API 2 3/8"RegΦ90-Φ110mm1.0-1.5Mpa1.0 Mpa4.5 m3/min
1.5 Mpa9 m3/min
4" hammersDHD340
COP44
QL40
SD4
M40
API 2 3/8"RegΦ105-Φ130mm1.0-2.5Mpa1.0 Mpa6 m3/min
1.8 Mpa10 m3/min
2.4 Mpa15 m3/min
5" hammersDHD350
COP54
QL50
SD5
M50
API 2 3/8"Reg
API 3 1/2"Reg
Φ130-Φ156mm1.0-2.5Mpa1.0 Mpa9 m3/min
1.8 Mpa15 m3/min
2.4 Mpa23 m3/min
6" hammersDHD360
COP64
QL60
SD6
M60
API 3 1/2"RegΦ152-Φ203mm1.0-2.5Mpa1.0 Mpa10 m3/min
1.8 Mpa20 m3/min
2.4 Mpa28.5 m3/min
8" hammersDHD380
COP84
QL80
SD8
M80
API 4 1/2"RegΦ200-Φ279mm1.0-2.5Mpa1.0Mpa15m3/min
1.8Mpa26m3/min
2.4Mpa34m3/min
10" hammersSD10
NUMA100
API 6 5/8"RegΦ254-Φ330mm1.0-2.5Mpa1.0Mpa22m3/min
1.8Mpa40m3/min
2.4Mpa55m3/min
12" hammersDHD1120
SD12
NUMA120
NUMA125
API 6 5/8"RegΦ305-Φ381mm1.0-2.5Mpa1.0Mpa30m3/min
1.8Mpa56m3/min
2.4Mpa78m3/min

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