3.5 -28 Inch Down Hole Hammer For Horizontal Directional Drilling Foundation

Water Well Drilling, Horizontal Directional Drilling Foundation Drilling With Diameter Hammer Size from 3.5inch-28inch

"Down The Hole" (DTH) hammers provide the most versatile and cost effective rock drilling method available to date.

Drilling Supply offers an extensive range of DTH hammers suitable for a wide variety of drilling techniques and environments.

​1. Advantages of construction method

Use:DTH Hammer drilling is a good way to drill through cave formation and avoid stuck problem

Cave:When encountering caves,drill bit inclines to the cave.The stabilizer ensures the hole straightness

Bit stuck；One reason is cave encounter,the drill bit deviates,and the entire set of drilling tools inclines in the hole.The other,is hole collapse.A large number of rock or clay catch the drill pipe,resulting in bit stuck.Steel casing and stabilizer can resolve this problem.

2. Detailed structure information

DTH hammer series can match to different shank bit like
TH3.5/COP32/DHD3.5/COP34/MACH303/BR33
TH4/DHD340/COP44/MACH44/SD4/QL40
TH5/DHD350/COP54/MACH50/MISSION50/SD4/QL50
TH6/DHD360/COP64/MISSION60/COP64 G/SD6
TH8/DHD380/SD8/QL80
TH10/SD10/NUMA100
TH12/DHD112/SD12/NUMA120
TH180/NUMA125
TH18/NUMA180
TK24/TK28

* Hammers without footvalve are available.
* External diameter of hammer is adjustable according to customers' requests.
* Shock absorbers and Hexagonal Joints are available.

3. Product Application

-----Widely applied for complex rock formations like caves,pebbles,fissures etc

-----Drilling through hard rocks with high rate of penetration

-----Low air consumption

4. Photo