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Application Range: It can be widely used in drilling for grouting holes in projects such as cofferdam,foundation and geothermall and etc.
Working Principles:As water or compressed air for medium,the discharged head make the casing tube and drill rod totate and penetrate.
Structure: with inner drill rods and with inner hammer and Easy operation
Technical parameters
Ring Bit | Inner Bit | ||||||||
Outer Dia. of Casing (mm) | Bore Hole Dia. (mm) | Thread (mm) | Buttons Dia.×Qty. | Weight (kg) | Drill Rod Dia. (mm) | Drill Bit Dia. (mm) | Thread | Buttons Dia.×Qty. | Weight (kg) |
118 | 125 | 104.2 | 12×13mm/6×12mm | 7.0 | 73 | 85 | R56 | 8×12mm/6×11mm | 4.5 |
133 | 142 | 122 | 12×13mm/6×13mm | 7.5 | 73 | 99 | R56 | 8×14mm/6×14mm | 5.0 |
146 | 155 | 134 | 12×14mm/4×13mm | 8.0 | 73 | 115 | R56 | 8×14mm/7×12mm | 6.0 |
168 | 175 | 153.9 | 12×12mm/6×12mm | 10.5 | 73 | 127 | R56 | 9×14mm/8×14mm | 7.0 |