General Introduction:
1, valveless air distribution. More reliable.
2, simple design of the piston, long life.
3, More efficient energy transfer, faster drilling speed, lower air consumption and lower oil consumption.
4, fewer internal parts, simple structure, longer life, less failure and easier to maintain becayse all the parts are heat treated.
5, It is easy to disassemble because the top sub, the drive chuck and the external cylinder are connected by multi-step thread.
It is a kind of high air pressure DTH Hammer without foot valve and without valve, our newest design. It is also one of the most advanced DTH Hammers in the world.
We manufacture DTH Hammers in different sizes ranging from 1 to 12. These hammers are made corresponding to Drilling Bits to carry out prevalent objectives. These hammers are used in various down the hole operations like bench Drilling. These are valve less hammers with optimized air cycle frequency. These are heavy duty hammers that well at greater depths demanding less air usage, delivering minimum performance loss.
We offer IR hammer, DHD3.5, DHD340a, DHD360, DHD380, COP and QL hammer. The optimum range of hole size for blast drilling with DTH is 90mm to 254mm, smaller blast holes are generally drilled using top hammer, and larger holes generally use rotary machines. Our hammer like COP and QL are known fort heir reliability and longevity.
1-12 inch middle-low/high air pressure DTH hammer & bit
Big hole high air pressure DTH hammer using in water well, oil, gas and construction drilling
Eccentric overburden drilling Equipment
Hole opener bit
Rock thread bit
Shank adapter, coupling sleeves and all kinds of adapters
Advantages:
Compared with the oversea brands, our advantages are bellowing:
A. Our products can match over 95% against the original products
B. Price are competitive against the famous brands and best quality against the small factory
| Specification: |
External Diameter (mm) |
Connection thread |
Hole rang (mm) |
| Low air pressure DTH hammer CIR type |
50~180 |
CIR** |
55~200 |
| Middle air pressure BR & COP type |
70~110 |
|
85~115 |
3 inch DTH hammer
COP34/QL30 etc |
81 |
API 2 3/8" Reg |
90~110 |
4 inch DTH hammer
COP44/DHD340 etc |
99 |
API 2 3/8" Reg |
110~150 |
5 inch DTH hammer
COP54/Mission50 etc |
125 |
API 2 3/8" or API 3 1/2" Reg |
135~165 |
6 inch DTH hammer
COP64/QL60 etc |
142 |
API 3 1/2" Reg |
152~216 |
8 inch DTH hammer
COP84/SD8 etc |
180 |
API 4 1/2" Reg |
203~305 |
10, 12inch DTH Hammer
NUMA 100, NUMA 125 |
275 |
API 6 5/8 Reg PIN |
305-445 |
Audited Supplier 
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