Changsha Sollroc Engineering Equipments Co., Ltd
FOCUS IN MANUFACTURING OF HIGH QUALITY DTH AND RC DRILLING TOOLS.
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Water Well Borehole Drilling Device 6 Inch QL60 Down The Hole Hammer
Our Products:
With professional manufacturing experience in DTH hammer production, our factory can supply you with high
pressure and medium to low pressure DTH hammers. It strictly matches with API standard and other Chinese industry standards.It is durable for being produced with advanced craftwork and good material.
Products Description
In air-circulation drilling, if a formation is too hard for penetration by a drag bit, a DTH hammer is generally employed. This tool was developed for the mining and quarrying industry. The ‘business’ end – the button bit – is studded with hemispherical tungsten carbide ‘buttons,’ and with channels built in to allow the passage of compressed air. When the hammer is pressed against the ground, the bit is forced into a pneumatic hammer action (like a road drill) by compressed air fed down the drill pipes. Then, as the tool is rotated in the hole, the buttons act across the entire base of the borehole. Most hammers rotate at speeds of 20 to 30 revolutions per minute, and blows can be struck at rates of up to 4000 per minute. Debris is normally flushed (blown) out of the hole at the end of each drill pipe. DTH hammers are most effective in hard rock formations such as limestones or basalts; soft, fine-grained formations tend to clog the air ducts or jam the piston slides.
Nonetheless, DTH hammers are extremely cost-effective and hence very popular with commercial drillers.
Test Deepth of DTH Drilling Hammers
| Rock formation | Drilling meters |
| Granite | 16400 ft above |
| Abrasive granite | 9800 ft above |
| Sandstone | 26300 ft above |
DTH hammer and bit introduction:
| Shank | Length(less bit) | External diameter | Top Sub Thread | Weight(less bit) | Hole Range |
| HQL60 | 1212mm | 148mm | API 3 1/2''REG | 95kg | 155-190 |
Advantages:
Our DTH hammer and bits has following advantages:
Deliver maximum energy to drilling bit, fast drilling speed and low air consumption due to inner structure of DTH hammer designed according to newest rock drilling theory.
Smooth performance and long service life of DTH hammer due to high quality alloy steel materials and advanced
processing technology adapted.
Low problem rate and easy to maintenance due to simple , reliable and easy assemble and disassemble inner structure of hammer.
Easy to depart bit from hammer due to multi-head thread connecting chuck and cylinder of hammer.
Interchangeable with DTH bit and dill pipe manufactured by many brands all over the world.
Our Service:
1.Pre-sale service:
Act as a good adviser and assistant of clients enable them to get rich and generous returns on their investments .
(1)Select equipment model.
(2)Design and manufacture products according to customer‘s needs;
(3)Train technical personnel for clients .
2.Services during the sale:
(1)Pre-check and accept products ahead of delivery .
(2)Help clients to draft solving plans .
3.After-sale services:
Provide considerate services to minimize clients' worries.
(1)Complete After-sales service,professional engineers available to service machinery at home or oversea.
(2)24 hours technical support by e-mail.
(3)Other essential technical services.
Quality warranty:
Our products are made of high quality steel and all spares parts are inspected strictly before shipping. We have quickly responses for your complaint and suggestion.
Package:
Using ply-wooden cases and pallet for package to protect the products and avoid the damagement during transportation. Also we can customize package according to your special requests.
Production time:
Generally need 15-25 days
Transportation:
By air, By Express or By sea according to your requests.