KAT DRILLING
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Extension rods are manufactured from high-quality hollow drill steels. They are available in two primary shapes: round and hexagonal. The central hollow hole, known as the flushing hole, is essential for transmitting water or air during drilling operations. The threads are designed for seamless connection with couplings, shanks, or drill bits.
| 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 SERIES | ||||
| 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 28 SERIES | ||||
| HEX 28 | 610 | 2' | R28 | R28 |
| HEX 28 | 1220 | 4' | R28 | R28 |
| HEX 28 | 1830 | 6' | R28 | R28 |
| HEX 28 | 3050 | 10' | R28 | R28 |
