2-12 Inch Down The Hole Rock Drilling Hammer DTH Button Bits Compatible with CIR/Br/Cop/SD/Mission/QL/MP Bit Shank
Product Specifications
| Attribute |
Value |
| Manufacturing Process |
Forging |
| Material |
Alloy Steel |
| Connection Thread |
API 3 1/2" Reg |
| Hole Range |
Dia 155 - 190 mm |
| Working Pressure |
1.0 - 2.5MPa |
| Compatible Bit Shank |
Mission60 / Cm60A |
| Transport Package |
Ply-Wooden Cases for Exporting |
| Specification |
2 inch to 12 inch |
| Trademark |
Super Diamond |
| Origin |
China |
| HS Code |
8207199000 |
Product Advantages
- Matches over 95% compatibility with original products
- High quality alloy steel with premium hardening for extended lifespan
- Complete production chain ensures stable quality and prompt delivery
- Manufactured by experienced technicians and engineers
- Customization options available with efficient service
- Competitive pricing compared to major brands with superior quality
- Global customer satisfaction across multiple continents
Advantages of Hammers Without Foot Valve
- Eliminates foot valve breakage, distortion, or expansion issues
- 15-30% higher drilling speed with lower energy consumption
- Simplified, reliable design with longer service life
- Reduced air and oil consumption (10% less oil usage)
- Highly recommended for optimal performance
Product Images
Technical Specifications
| 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 |
4.5m³/min |
|
BR2 |
RD50 box |
70-90mm |
0.7-1.75Mpa |
4m³/min |
|
BR3 |
API 2 3/8" Reg |
90-110mm |
0.7-1.75Mpa |
5m³/min |
| 3" hammers |
DHD3.5 |
API 2 3/8"Reg |
90-110mm |
1.0-1.5Mpa |
4.5m³/min |
|
COP32/COP34 M30 |
|
|
1.5Mpa |
9m³/min |
| 4" hammers |
DHD340 |
API 2 3/8"Reg |
105-130mm |
1.0-2.5Mpa |
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 |
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 |
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 |
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 |
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 |
30m³/min |
|
SD12 NUMA120 |
|
|
1.8Mpa |
56m³/min |
|
NUMA125 |
|
|
2.4Mpa |
78m³/min |
Production Process
About Our Company
We are a leading manufacturer of rock drilling tools, including DTH hammers and bits, RC hammers and bits, top hammer button bits, and ODEX systems. Our 26,600 square meter facility in LiuYang city, HuNan province, China includes 22,000 square meters of production space.
With premium quality, professional service, and competitive pricing, we've earned an excellent reputation among domestic and international customers in Brazil, Peru, South Africa, Australia, Turkey, Russia, Ukraine, Korea, and more.
Factory Overview
Our Team and Exhibition
Certifications
Quality Assurance
Our products are manufactured from high-quality steel with strict inspection of all components before shipping. We provide prompt responses to all customer feedback and suggestions.
Packaging and Shipping
Frequently Asked Questions
1. Are you a manufacturer or a trade company?
We are a manufacturer of rock drilling equipment and pneumatic tools in China.
2. How many workers in your factory and what is your company scale?
We have over 100 employees including factory workers, sales staff, QC personnel, R&D, and management. Our 26,600 m² facility includes 22,000 m² of workshop space with over 400 sets of advanced equipment. 50-70% of production is exported globally.
3. Where is your company located?
Located in Changsha city, Hunan province, approximately 1.5 hours from Huanghua International Airport and 2.5 hours by express train from Guangzhou.
4. Why choose CJG DRILL?
- 17+ years of research, development, and manufacturing experience
- High quality compatible with major brands
- Unbeatable pricing
- Excellent customer service
5. Which port do you ship from?
We typically ship from Shanghai port, with Guangzhou port also available.
6. Can you accept OEM & ODM?
Yes, we accept both OEM and ODM orders.
7. What is your minimum order quantity?
MOQ is 1 piece or 1 complete set, with pricing dependent on order quantity.
8. What is your payment term?
We accept T/T, L/C at sight, Western Union, and cash payments.
9. How about the delivery time?
Typically about one month, regardless of season.
10. Can we schedule a factory visit?
Absolutely. We welcome visitors and can arrange hotel reservations, airport pickup, and transportation from Changsha Huanghua airport or CHR Express station.
We welcome all customers to visit our factory and explore our extensive product range!
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