Step Drag Bit is manufactured from forged high quality alloy steel and premium tungsten carbide insert, combined with state-of-the-art welding technology and multiple precision heat treatments. This ensures the highest penetration rate and longest life span even in the roughest drilling conditions.
📍1. Hole Size Requirements:
The bit size must correspond accurately to the diameter of the hole you intend to drill.
📍2. Drill Pipe Thread Compatibility:
Common options include: API 2 3/8” REG, 2 3/8” IF, API 3 1/2" REG, API 2 7/8" IF, NC23, NC26, NC31, etc. The bit must match your specific drill pipe thread.






| No. | Inch | mm | Thread Type |
|---|---|---|---|
| 1 | 2.875 | 73 | API 2 3/8’’ REG |
| 2 | 3 | 76 | API 2 3/8’’ REG |
| 3 | 3.5 | 89 | API NC26 |
| 4 | 4 | 102 | API NC31 |
| 5 | 4.5 | 114 | API NC35 |
| 6 | 5 | 127 | API NC38 |
Step type bits are the most common type of drag bit used widely for soft to medium formations. They are exceptionally effective in drilling soft and unconsolidated material.
As a professional manufacturer and trader specialized in the research, development, and service of the drilling industry, our factory covers more than 7,000 square meters. With nearly 20 years of professional manufacturing experience, we host a dedicated team of over 100 skilled workers and experienced engineers.
Our product line includes geological drilling rigs, core drill tools (drill rods, bits, barrels), water well drilling rigs, and DTH rock drill tools. These series have achieved advanced levels both domestically and internationally, recognized for reliable quality and specialized manufacturing techniques.





