| Customization: | Available |
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| Customized: | Customized |
| Certification: | CE, ISO, ISO 9001:2008 |
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| Classifying by hammers cutting blowing up way: | Conventional DTH hammer & Reverse Circulation DTH hammer (RC hammer) |
| Classifying by hammers rated working pressure: | Low air pressure DTH hammer,Mid-Low air pressure DTH hammer,High air pressure DTH hammer,Ultrahigh air pressure DTH hammer |
| Classifying by hammers air distribution and structure characteristics: | Hammers with valve & Hammers without valve. |
| Outer diameter: | 1 inch, 2 inch, 3 inch, 4 inch, 5 inch, 5.5 inch, 6 inch, 7 inch, 8 inch, 9 inch, 10 inch, 12 inch , 15 inch, 24 inch, etc., |
| Classifying by the assorted bit which with or without foot valve: | DTH hammers available for assorted bit which with foot valve & without foot valve. |
The optimum range of hole size for blast hole drilling with DTH is 90 mm to 254 mm (3 ½"-10″). Smaller blast holes are generally drilled using tophammer, 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.
As a rule of thumb, the smallest hole diameter a DTH hammer can drill is its nominal size. A 4 inch hammer will drill a 4 inch (102 mm) hole. The limiting factor is the outside diameter of the hammer, because, as hole diameter reduces, airflow is restricted. Maximum hole size for production drilling is the nominal hammer size plus 1 inch, so for a 4 inch hammer the maximum hole size is 5 inch (127-130 mm).
Choosing the right hammer is largely determined by hole size and type of rock formation. Ideally, the size of the hammer should match the required hole dimension as closely as possible, leaving just enough space for cuttings to evacuate the hole.
| Hammers | Bit Shank | Connection Thread | Suitable bit | Working pressure | Air consumption | |
| 1-3" Middle-low pressure DTH hammers | BR1 | RD40 box | 64-76mm | 0.7-1.75Mpa | 0.7Mpa | 4.5m3/min |
| BR2 | RD50 box | 70-90mm | 0.7-1.75Mpa | 1.0Mpa | 4m3/min | |
| BR3 | API 2 3/8" Reg | 90-110mm | 0.7-1.75Mpa | 1.4Mpa | 5m3/min | |
| 3" hammers | DHD3.5 | API 2 3/8"Reg | 90-110mm | 1.0-1.5Mpa | 1.0Mpa | 4.5m3/min |
| COP32/COP34 | ||||||
| M30 | 1.5Mpa | 9m3/min | ||||
| 4" hammers | DHD340 | API 2 3/8"Reg | 105-130mm | 1.0-2.5Mpa | 1.0Mpa | 6m3/min |
| COP44 | ||||||
| QL40 | ||||||
| SD4 | 1.8Mpa | 10m3/min | ||||
| M40 | 2.4Mpa | 15m3/min | ||||
| 5" hammers | DHD350 | API 2 3/8"Reg/API 3 1/2"Reg | 130-156mm | 1.0-2.5Mpa | 1.0Mpa | 9m3/min |
| COP54 | ||||||
| QL50 | ||||||
| SD5 | 1.8Mpa | 15m3/min | ||||
| M50 | 2.4Mpa | 23m3/min | ||||
| 6" hammers | DHD360 | API 3 1/2"Reg | 152-203mm | 1.0-2.5Mpa | 1.0Mpa | 10m3/min |
| COP64 | ||||||
| QL60 | ||||||
| SD6 | 1.8Mpa | 20m3/min | ||||
| M60 | 2.4Mpa | 28.5m3/min | ||||
| 8" hammers | DHD380 | API 4 1/2"Reg | 200-279mm | 1.0-2.5Mpa | 1.0Mpa | 15m3/min |
| COP84 | ||||||
| QL80 | 1.8Mpa | 26m3/min | ||||
| SD8 | 2.4Mpa | 34m3/min | ||||
| 10" hammers | SD10 | API 6 5/8"Reg | 254-330mm | 1.0-2.5Mpa | 1.0Mpa | 22m3/min |
| NUMA100 | 1.8Mpa | 40m3/min | ||||
| 2.4Mpa | 55m3/min | |||||
| 12" hammers | DHD1120 | API 6 5/8"Reg | 305-381mm | 1.0-2.5Mpa | 1.0Mpa | 30m3/min |
| SD12 | ||||||
| NUMA120 | 1.8Mpa | 56m3/min | ||||
| NUMA125 | 2.4Mpa | 78m3/min | ||||
Qideli are a famous drilling tool manufacturer in China since 1990
We Support :
1.DTH Hammer & button bit, drill rod
2.Top hammer bit & shank adapter & drill rod
3.Taper bit, taper rod
4.New and used air compressor and drilling rig
5.DIAMOND ROPE SAW & OTHER STONE TOOLS
Our products have a great advantage both in price and quality, as well as gotten good reputation from our customers from South Africa, Iran, Malaysia, Burkina Faso, South Korea, Japan, Spain, and the Middle East ETC,more than 50 countries or regions.
Customization is welcome ,we are always be here for your solutions,when you need in.
The information you may like to know before order:
1. Methods of Payment:
T/T (Telegraphic Transfer) or Western Union or L/C at sight
2. Handling time for an order
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. Shipping way
Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air.
Bulk order: we suggest by air or by sea.
4. Quality Control
We have our own experienced QC.
There will be strict inspection and testing for every order before shipping out.
5. After Services:
a. Our sales team will response for your question within 24 hours (Holidays Excluded)
b. Technical Support will be available in any time
c. Free replacement will provide once the failure confirmed caused by our product quality
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