WS 2002 DHD 380 Hammer 8" with Foot valve

WS 2002 DHD 380 Hammer 8" with Foot valve

Drilling hole range: 165-350mm Connection thread: API 3 1/2", API 4 1/2" Working pressure: Our hammers are available in the popular DHD 360, SD6, DHD 380 , and SD8 with foot valve type and without foot valve type for operation at higher pressures ranges from 1.0-2.5Mpa. The optimum range of Bits size for blast hole drilling with DTH is 90 mm to 350 mm. Smaller blast holes are generally drilled using top hammer, and larger holes generally use rotary machines. In other applications, like foundation drilling, DTH hammers can be used with single bit in hole sizes up to 750 mm (30″). With multiple, hammer units CD (Cluster drills) drill holes up to 70″ or 1778 mm.

It also has the following advantages: 

1.  Deliver maximum energy to drilling bit, fast drilling speed and low air consumption due to the special inner structure of HD series DTH hammer designed according to newest rock drilling theory.
2.  Smooth performance and long service life of HD series DTH hammer due to high quality alloy steel materials and advanced processing technology adapted. 
3.  Low problem rate and easy to maintenance due to simple, reliable and easy assemble and disassemble inner structure of hammer. 
4.  Easy to depart bit from hammer due to multi-head thread connecting chuck and cylinder of hammer. 
5.  Valueless air distribution hammer, more reliable. Good sealability, no water and cuttings entering into hammer in water exists drilling. 
6.  Interchangeable with DTH bit and drill pipe

• Drilling hole range: 165-350mm
• Connection thread: API 3 1/2", API 4 1/2"
• Working pressure: 10-25 Bar
• Application: Geothermal Drilling, Water well, Blast hole, Quarrying