70mm T45 Retrac Thread Button Bit Drill Bit Bench Drilling
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
- Premium hardened alloy steel construction for extended service life
- Complete production chain ensures stable quality and prompt delivery
- Manufactured by experienced technicians and engineers
- Customization options available with efficient service
- Competitive pricing with superior quality compared to smaller manufacturers
- Recognized globally with satisfied customers in France, Spain, Italy, South Africa, Australia, Iran, Malaysia, and more
Advantages of Hammers Without Foot Valve
- Eliminates concerns about foot valve breakage, distortion, or expansion from abrasion or high temperatures
- 15-30% higher drilling speed with lower energy consumption
- Simplified, reliable design with longer lifespan and economical maintenance
- Reduced air and oil consumption (approximately 10% less oil than foot valve models)
- Highly recommended for optimal performance
Product Gallery
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 |
| 3" hammers | DHD3.5 | API 2 3/8"Reg | 90-110mm | 1.0-1.5Mpa | 4.5m3/min |
| 4" hammers | DHD340 | API 2 3/8"Reg | 105-130mm | 1.0-2.5Mpa | 6m3/min |
| 5" hammers | DHD350 | API 2 3/8"Reg/API 3 1/2"Reg | 130-156mm | 1.0-2.5Mpa | 9m3/min |
| 6" hammers | DHD360 | API 3 1/2"Reg | 152-203mm | 1.0-2.5Mpa | 10m3/min |
| 8" hammers | DHD380 | API 4 1/2"Reg | 200-279mm | 1.0-2.5Mpa | 15m3/min |
| 10" hammers | SD10 | API 6 5/8"Reg | 254-330mm | 1.0-2.5Mpa | 22m3/min |
| 12" hammers | DHD1120 | API 6 5/8"Reg | 305-381mm | 1.0-2.5Mpa | 30m3/min |
Production Process
Company Overview
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 beyond.
Facility Images
Quality Assurance
All products are manufactured from high-quality steel with strict inspection of all components prior to shipping. We maintain rapid response times for any customer concerns or suggestions.
Packaging & Shipping
Frequently Asked Questions
Are you a manufacturer or a trade company?
We are a manufacturer of rock drilling equipment and pneumatic tools in China.
How many workers in your factory and what is your company scale?
We employ over 100 staff including production workers, sales personnel, quality control, R&D, and management teams. Our 26,600 m² facility includes 22,000 m² of workshop space with over 400 sets of advanced equipment. 50-70% of our production serves global markets across Korea, Malaysia, Australia, Russia, Central Asia, Europe, South America, and Africa.
Where is your company located?
Our facility is located in Changsha city, Hunan province - 1.5 hours by car from Huanghua International Airport and 2.5 hours by express train from Guangzhou.
Why choose CJG DRILL?
- 17+ years experience in research, development, manufacturing, and exporting
- High quality compatible with Robit, Atlas Copco, Ingersoll Rand
- Unbeatable pricing
- Excellent customer service
Which port do you ship from?
We typically ship from Shanghai port, with Guangzhou port also available.
Do you accept OEM & ODM?
Yes, we accept both OEM and ODM orders.
What is your minimum order quantity?
Our MOQ is 1 piece or 1 complete set, with pricing dependent on order quantity.
What payment terms do you accept?
We accept T/T, L/C at sight, Western Union, and cash payments.
What is your typical delivery time?
Approximately one month, regardless of season.
Can we schedule a factory visit?
Absolutely. We welcome visitors and can arrange hotel accommodations, airport/station pickup, and full hospitality during your visit to Changsha.
We welcome all customers to visit our factory and explore our comprehensive product range!
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