4" TH4 DTH Hammer for Mining Drilling
Specifications
1.Hole size:105-138mm2.Reliability quality
3.Simple structure and easy operation
4.Long service life
Usage:
Drill holes from 105mm to 152mm.
Matched products:
76mm drill rods with API 2 3/8"REG BOX
bits with COP44.DHD340A,Mission40,QL40,SD4,XL4 shanks
Application fields:
all kinds of fields, such as mining, quarry, tunnel, bridge, construction and etc., but extremely exellent to use with casing tubes during casing drilling.
Features: 1.high impact power with low frequency
2.non-return flushing
3.Reliable performance
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