KAT DRILLING
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Extension rods are manufactured from premium hollow drill steels. Available in two primary shapes—round and hexagonal—these rods feature a central flushing hole used for transmitting water or air during the drilling process. The integrated threads are designed for seamless connection with couplings, shanks, or drill bits.
Standard Technical Details:
• Thread Types: R22, R25, R28, R32, R38, T38, T45, T51, ST58, T60.
• Length Range: Available from 600mm to 6400mm.
• Steel Grades: Male-Male Rod, MF Rod.
• Rod Sizes: Hex 22mm, 25mm, 28mm, 32mm, 35mm; Dia 39mm, 46mm, 52mm.
• Productivity: 20,000 MT per month.
| HEX EXTENSION ROD SPECIFICATIONS | ||||
|---|---|---|---|---|
| R22 - 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 - R25 - HEX 25 (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 - R28 - HEX 28 (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 |
