JWE CARBIDE CO., LTD.
Specialized in Tungsten Carbide Products，Aim to Build a World-Renowned Brand.
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DTH Hammer 3.5 Carbide Drilling Tools Spherical Drill Bit
Production Description
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 standards and other Chinese industry standards. It is durable for being produced with advanced craftwork and good material.
Our hammer and bits are made of high-quality alloy steel with advanced heat treatment to assure good drilling performance and long service life. They are widely used by our customers all over the world.
Advantage:
1. Valveless air distribution, more reliable.
2. Piston with simple but compact design, 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, with the all heat-treated parts;
5. Easy to disassemble, thanks for the top sub, drive chuck and external cylinder all are connected by a multi-step thread.
Application:
1. Suitable for high-pressure drilling rigs
2. Water well drilling
3. Record-breaking penetration
4. Exploring Civil Engineering Applications
5. Lowest cost per foot drilled
6. Simple & robust design
7. Exploring Civil Engineering Applications
8. Foot Valve not required in the bit
9. Longer parts of life
10. Maximizes efficiency
Specification:
| DTH hammer type | HD35 | HD45 | HSD4 | HQL4 | |
| Length(less bit) mm | 930mm | 1030 | 1084 | 1097 | |
| Weight(less bit) kg | 25kg | 39 | 40.5 | 41 | |
| External diameter mm | Φ82mm | Φ99 | Φ99 | Φ99 | |
| Bit shank | DHD3.5 | COP44 DHD340 | SD4 | QL40 | |
| Hole range(mm) | Φ90-110 | Φ110-135 | Φ110-135 | Φ110-135 | |
| Connection thread | API 2 3/8” Reg. | API 2 3/8" Reg | API 2 3/8" Reg | API 2 3/8" Reg | |
| Working pressure | 1.0-1.5Mpa | 1.0-2.5Mpa | 1.0-2.5Mpa | 1.0-2.5Mpa | |
| Impact rate at 1.5-1.7Mpa | 28Hz | 27Hz | 27Hz | 27Hz | |
| Recommended Rotation speed | 25-40r/min | 25-40r/min | 25-40r/min | 25-40r/min | |
| Air consumption | 1.0Mpa | 4.5m3/min | 6.0m3/min | 6.0m3/min | 6.0m3/min |
| 1.8Mpa | 9.0m3/min | 10.0m3/min | 10.0m3/min | 10.0m3/min | |
| 2.4Mpa | / | 15.0m3/min | 15.0m3/min | 15.0m3/min | |
Features of our Threaded Button Bits:
* Be produced from premium quality Nickel-alloy steel or Molybdenum-ally steel for increased durability and wear characteristics
* Specific heat treatment standards and strict production process ensure consistent performance
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