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| Categories | DTH Hammers |
|---|---|
| Brand Name: | MIROC |
| Model Number: | DHD3.5 COP32 hammer |
| Place of Origin: | China |
| MOQ: | Negotiation |
| Price: | negotiation |
| Payment Terms: | T/T, L/C, D/A, D/P, Western Union |
| Supply Ability: | 20000pcs per month |
| Delivery Time: | 15-20days |
| Packaging Details: | wooden box |
| Certification: | ISO |
| Color:: | Any color is available |
| Application:: | Water well drilling, Quarry drilling, Construction Rock Drilling |
| Bit Shank type:: | DHD3.5 COP32 Shank |
| Hammer type: | DHD3.5 COP32 DTH Hammer High Air Pressure |
| Bit diameter: | φ90 - φ110mm |
| Drilling method: | DTH Drilling |
| Product name: | DHD3.5 COP32 DTH Hammer , High Air Pressure Down The Hole Hammer |
| Company Info. |
| KSQ Technologies (Beijing) Co. Ltd |
| Verified Supplier |
| View Contact Details |
| Product List |
3 inch High Air Pressure Rock Drilling Tool DTH Hammer DHD3.5 COP32
Applications
1. Underground mining
2. Quarry benching operations
3. Water well drilling
Our DTH Hammer and Bit - Fully Compatible with Atlas Copco, drilling rigs, industry leading manufacturer of drilling tools in China.
| Hammers Size | Bit Shank | Hole Range |
| 2" | BR2/HD25 | 70-90mm |
| 3" | DHD3.5/COP32/COP34/QL30/M30/BR3/BR33/XL3/Mach303 | 90-110mm |
| 4" | DHD340/COP44/QL40/SD4/M40/ Mach44/TD40(COP44 gold) | 110-135mm |
| 5" | DHD350/COP54/QL50/SD5/M50 | 135-155mm |
| 6" | DHD360/COP64/QL60/SD6/M60/TD60 (COP64 gold) | 155-190mm |
| 8" | DHD380/COP84/QL80/SD8/M80 | 195-254mm |
| 10" | SD10/NUMA100 | 254-311mm |
| 12" | DHD1120/NUMA120/NUMA125 | 305-445mm |
DTH молоток/DTH hammer/ค้อน DTH/Down The Hole Hammers/Abajo los martillos del agujero/Por el agujero Martillos/Martillos DTH/Herramientas de martillo DTH/เครื่องมือค้อนทุบ DTH/DTH Hammer Tools
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. Scope of application:Mining, quarry, road building, well hole drilling, blasting, landslide prevention, dam reinforement, anchoring, geothermal, hydrology, etc.
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