T38 3660mm Extension Drilling Rods with M/F Thread Design
Premium Threaded Extension Rods for Efficient Drilling
Our extension rods (also known as extension drill steel or speed rods) are manufactured in both hexagonal and round cross-sections. Hexagonal rods offer superior rigidity, better energy transfer, and improved flushing, while round rods are lighter and ideal for extension drilling applications.
M/F Rod Advantages
The Male/Female (M/F) threaded design eliminates the need for coupling sleeves, providing more rigid connections that are easier to uncouple and handle. This integrated thread design extends service life compared to separate couplings.
Advanced Manufacturing Process
All extension rods undergo carburization heat treatment to harden both internal and external surfaces, strengthening the rods and maximizing their performance and reliability under high-speed percussive drilling conditions.
Technical Specifications
| Product Name |
Extension rod / Drift rod |
| Material |
High-quality carbon steel bar |
| Body Type |
Round shape and hexagonal type |
| Thread Types |
R25, R28, R32, R38, T38, T45, T51 |
| Diameter Options |
Hex25, Hex28, Rd32, Rd38, Rd45, Rd51 |
| Length Range |
600mm-6400mm |
| Minimum Order Quantity |
5 pieces |
Key Advantages
- Premium quality from a TOP 10 Chinese drilling tools manufacturer
- Competitive direct factory pricing
- Expert problem-solving from our experienced team
- Fast production (25 days) and immediate shipping for in-stock items
- Rigorous quality control with inspection for every order
- Custom OEM/ODM services available
- Comprehensive after-sales support including on-site assistance
Product Images
Manufacturer Profile
Hebei Minetech Machinery Technology Co., Ltd is a joint venture enterprise with European partners, specializing in mining machinery and drilling consumables. With over a decade of experience, we manufacture hydraulic/pneumatic drill machines, roof bolters, drill bits, and rods in our Shijiazhuang factory.
Our products are exported to 30+ countries including the USA, Germany, UK, South Africa, and throughout Southeast Asia, South America, and the Middle East, establishing a strong international reputation for quality and reliability.
