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Retrieable ( Recyclable ) Symmetric Overburden Drilling Casing System, Casing Tube OD168 mm, ID155mm, including Polit Bit, Ring Bits + Casing Shoe.
Premium high qulity steel code DZ40 Casing Tube dia 168.3mm*3m*6mm left threaded pin and box threaded in casing pipe for SOD168 symmetric Casing System
Casing pipe weled with casing shoe of ring bit of Symmetric Overburden Drilling
Hydraulic puller casing tube for symmetric casimg system SOD168, 219mm
Premium high qulity sub-adaptor casing tube for symmetric casing system SOD168
Pilot Bits for SOD168
Ring Bit Sets including Casing Shoes for SOD168
SOD168 Symmetrica Casing System
Rock drilling tools manufacturer ProDrill: Retrievable symmetric drilling system by DTH hammer is designed to drill and case a hole simultaneously through unstable ground conditions. The driver rock drill bits incorporated with a satisficial ring or reusable ring makes a full face head design which significantly improves the penetration rate and hole straightness of drilling. The internal flushing grooves together with the built-in casing shoes gives a good seal to the button of the drilling hole, minimizing the disruption of the drill hole's surrounding.
| Permanent/Top hammer Symmetrix overburden drilling system |
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| Code No. | Casing O.D. | Wall thickness | Ring bit I.D. | Ring bit O.D. | Polit bit O.D. | Thread | |||||
| mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | ||
| RoBit-SOD 89 | 89 | 3 1/2'' | 4 | 0.157 | 71 | 2.795 | 99 | 3.898 | 80 | 3.15 | T38 |
| RoBit-SOD 76 | 76 | 3'' | 8 | 0.315 | 47 | 1.85 | 90 | 3.543 | 59 | 2.323 | T38 |
| RoBit-SOD 89 | 89 | 3 1/2'' | 8 | 0.315 | 50.8 | 2 | 94.9 | 3.736 | 70 | 2.756 | T38 |
| RoBit-SOD 101 | 101.6 | 4'' | 10 | 0.394 | 65 | 2.559 | 110 | 4.331 | 79 | 3.11 | T38 |
| RoBit-SOD 114 | 114 | 4 1/2'' | 10 | 0.394 | 73.5 | 2.894 | 120.3 | 4.736 | 92.5 | 3.642 | T38 |
| RoBit-SOD 140 | 140 | 5 1/2'' | 10 | 0.394 | 94 | 3.701 | 145.7 | 5.736 | 117.5 | 4.626 | T45 |
| RoBit-SOD 168 | 168 | 6 5/8'' | 10 | 0.394 | 127 | 5 | 182.3 | 7.177 | 147 | 5.787 | T45 |
| Outer Dia Of Casing Tube | Inner Dia Of Casing Tube | Reamed Dia | Min Inner Dia Of Casing Shoe | Drill Pipes | Max.Outer Dia Of Normal Bit |
| mm | mm | mm | mm | mm | mm |
| 114 | 101-103 | 127 | 91 | 76 | 77 |
| 127 | 114-116 | 136 | 101 | 76 | 82 |
| 140 | 124-127 | 152 | 117 | 76 | 92 |
| 146 | 127-132 | 154 | 117 | 76 | 105 |
| 168 | 149-155 | 184 | 140 | 76 | 105 |
| 178 | 159-165 | 194 | 150 | 76.89 | 125 |
| 193 | 173-180 | 206 | 164 | 76.89 | 140 |
| 219 | 199-206 | 234 | 184 | 89.114 | 150 |
| 244 | 224-231 | 260 | 210 | 89.114 | 165 |
| 273 | 251-257 | 305 | 240 | 114 | 190 |
| 323 | 301-310 | 348 | 284 | 114.127 | 220 |
| 406 | 382-388 | 440 | 364 | 127 | 255 |
| 457 | 433-439 | 488 | 413 | 140 | 340 |
| 508 | 484-490 | 538 | 464 | 140 | 385 |
| 558 | 534-540 | 590 | 514 | 140 | 440 |
| 610 | 586-592 | 642 | 566 | 140 | 485 |
| 660 | 636-642 | 694 | 615 | 168 | 540 |
| 711 | 687-693 | 745 | 665 | 168 | 590 |
| 762 | 738-744 | 798 | 716 | 168 | 640 |
| 863 | 839-845 | 900 | 815 | 168 | 685 |
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