KAT DRILLING
1 / 5
Extension rods are manufactured using high-quality hollow drill steels. These rods come in two primary shapes: round type and hexagonal type. A defining feature is the hollow center, commonly referred to as a flushing hole, which is essential for transmitting water or air during the drilling process.
The integrated threads are designed for seamless connection with couplings, shanks, or drill bits.
Common Thread Types: R22, R25, R28, R32, R38, T38, T45, T51, ST58, T60.
Hex Rod Sizes: 22mm, 25mm, 28mm, 32mm, 35mm.
| R22 - HEX 22 (7/8" Rope Thread) | ||||
|---|---|---|---|---|
| Rod Cross Section | Length (mm) | Length (FT) | Thread Left | Thread Right |
| HEX 22 | 610 | 2' | R22 | R22 |
| HEX 22 | 915 | 3' | R22 | R22 |
| HEX 22 | 1220 | 4' | R22 | R22 |
| HEX 22 | 1525 | 5' | R22 | R22 |
| HEX 22 | 1830 | 6' | R22 | R22 |
| R25 - HEX 25 (1" Rope Thread) | ||||
|---|---|---|---|---|
| Rod Cross Section | Length (mm) | Length (FT) | Thread Left | Thread Right |
| HEX 25 | 610 | 2' | R25 | R25 |
| HEX 25 | 1000 | 3' 3" | R25 | R25 |
| HEX 25 | 1525 | 5' | R25 | R25 |
| HEX 25 | 1830 | 6' | R25 | R25 |
| HEX 25 | 3050 | 10' | R25 | R25 |
| HEX 25 | 4305 | 14' 1-1/2" | R25 | R25 |
| R28 - HEX 28 (1-1/8" Rope Thread) | ||||
|---|---|---|---|---|
| Rod Cross Section | Length (mm) | Length (FT) | Thread Left | Thread Right |
| HEX 28 | 610 | 2' | R28 | R28 |
| HEX 28 | 1220 | 4' | R28 | R28 |
| HEX 28 | 1830 | 6' | R28 | R28 |
| HEX 28 | 2435 | 8' | R28 | R28 |
| HEX 28 | 3660 | 12' | R28 | R28 |
