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| General introduction: |
PRODRILL Down The Hole Hammer, DTH hammer DHD340 4inch
It is a kind of high air pressure DTH Hammer with foot valve and without foot valve, which is our newest design and also one of the most advanced DTH Hammers in the world.
We manufacture DTH Hammers in different sizes ranging from 1inch to 12 inch.
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 BR 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) DTH hammers series we supply |
| A) High pressure series |
| B) Medium pressure series |
| C) Low pressure series |
| D) High efficiency high pressure series |
| E) Reverse circulation series |
| 2) Outside diameters: 61.2~275mm |
| 3) Drilling diameter: 68~508mm |
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 DHD3.5, COP34, COP32, QL30, M30, IR3.5 | 81 | API 2 3/8” Reg | 90~110 |
4 inch DTH hammer DHD340, COP44, M40, SD4, QL40 | 99 | API 2 3/8” Reg | 110~150 |
5 inch DTH hammer DHD350, COP54, M50, SD5, QL50 | 125 | API 2 3/8” Reg or API 3 1/2” Reg | 135~165 |
6 inch DTH hammer DHD360, M60, SD6, QL60, COP64 | 142 | API 3 1/2” Reg | 152~216 |
8 inch DTH hammer DHD380, COP84, M80, SD8, QL80 | 180 | API 4 1/2” Reg | 203~305 |
10, 12inch DTH Hammer SD10, DHD1120, NUMA 100, NUMA 125 | 275 | API 6 5/8 Reg | 305-445 |
15 inch DTH Hammer DHD1150, SD15, NUMA125 | 330 | API 7 5/8’’ REG | 350-660 |
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
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Delivery ways of dth hammers:
Sample order can delivery by Air or International express, such as DHL, UPS, Fedex, ect.
Batch orders can delivery by Air , By truck or by Sea
We can choose most favorable delivery ways for our customers
Terms & Conditions of Ordering:
1 .Payment Terms:
T/T (Telegraphic Transfer) or Western Union
2. Delivery Term:
Based on order quantity, normally it takes 25 days for production.
Only 2 or 3 days if we have stock on your request size.
3. Transportation:
Sample order: we suggest Courier express or by air
Bulk order: we suggest by air or by sea.
4. Quality & Service:
A. There will be strict inspection and testing for every order before shipping out.
B Our sales team and Technical Support will response for your question within 24 hours (Holidays Excluded) whatsApp:+86-18559299336 Matthew
C. Free replacement will provide once the failure confirmed caused or our product quality; Not satisfied with a refund.



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