KAT DRILLING
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Extension rods are manufactured from high-quality hollow drill steels. These rods are available in two primary geometric shapes: round type and hexagonal type. The central hollow hole, commonly referred to as the flushing hole, is essential for transmitting water or air during high-pressure drilling operations. The integrated threads are designed for seamless connection with couplings, shanks, or drill bits.
| Rod Cross Section | Length (mm) | Length (FT) | Thread (Left) | Thread (Right) |
|---|---|---|---|---|
| R22 - HEX 22mm (7/8" Rope Thread) | ||||
| 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 25mm (1" Rope Thread) | ||||
| HEX 25 | 610 | 2' | R25 | R25 |
| HEX 25 | 1000 | 3' 3" | R25 | R25 |
| HEX 25 | 1525 | 5' | R25 | R25 |
| HEX 25 | 3050 | 10' | R25 | R25 |
| HEX 25 | 4305 | 14' 1-1/2" | R25 | R25 |
| R28 - HEX 28mm (1-1/8" Rope Thread) | ||||
| HEX 28 | 610 | 2' | R28 | R28 |
| HEX 28 | 1220 | 4' | R28 | R28 |
| HEX 28 | 1830 | 6' | R28 | R28 |
| HEX 28 | 3660 | 12' | R28 | R28 |
