A | B | C | ||
Outer Dia. (mm) | Inner Dia. (mm) | Length (m) | ||
108 | 93 | 1 | 1.5 | 2 |
114 | 101 | 1 | 1.5 | 2 |
127 | 114 | 1 | 1.5 | 2 |
146 | 127 | 1 | 1.5 | 2 |
168 | 149 | 1 | 1.5 | 2 |
178 | 159 | 1 | 1.5 | 2 |
183 | 163 | 1 | 1.5 | 2 |
193 | 173 | 1 | 1.5 | 2 |
203 | 183 | 1 | 1.5 | 2 |
219 | 199 | 1 | 1.5 | 2 |
244 | 224 | 1 | 1.5 | 2 |
273 | 251 | 1 | 1.5 | 2 |
323 | 301 | 1 | 1.5 | 2 |
406 | 382 | 1 | 1.5 | 2 |
457 | 133 | 1 | 1.5 | 2 |
508 | 483 | 1 | 1.5 | 2 |
Casing Tubes
Application Range: It is suitable for drilling water wells, geothermal wells, short miscopies, medium mini-type grouting hole of building, dam and harbor project.
Design Principles: Make the casing follow easy and the equipment and operation simple.
Outstanding Advantages: Simple structure, easy operation, reliable quality, retrievable drilling tools, and long service life.
A: Discharge Head B: Drill Rod C: Guide Sleeve
D: DTH Hammer E: Casing Tube F: Guide Device
G: Casing Shoe H: Reamer I: Pilot Bit
Operation Procedure
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1. When drilling starts, the reamer opens and enlarges the hole to drive the casing shoe and casing tube down. | 2. When the drilling in over-burden formation is finished, reverse the rotation to close the reamer, then the assembly can be pulled up through the casing tube. | 3. The casing tube can be left in the hole, or can be pulled out by means of grout sealing material. | 4. Use the normal drilling tools to drill and achieve to the desired depth. |