ROSCHEN GROUP
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Eccentric overburden casing system with three pieces rock drilling tools
Rock Drilling Tools:
1. Drill in overburden unstable rock
2. One step to drill and follow casing
3. Flexible to open or close
Description of dth hammer and bit:
Application Range:
It is suitable for drilling water wells, geothermal wells, short mircopiles medium mini-type grouting hole of building, dam and harbour project.
Design Principles:
Make the casing follow easy and the equipment and operation simple
Outstanding Advantages:
Simple structure,simple operation,reliable quality,retrievable drilling tools,long service life.
Specifications:
| A | B | C | D | E | F |
| Outer Dia. of Casing Tube | Inner Dia. of Casing Tube | Reamed Dia. | Min. Inner Dia.of Casing Shoe | Hammer Type | Drill Pipes |
| mm | mm | mm | mm | mm | |
| 108 | 93-99 | 118 | 86 | TH79 | 76 |
| 114 | 101-103 | 127 | 91 | R56,T38,TH79 | 76 |
| 127 | 114-116 | 136 | 101 | TH79 | 76 |
| 140 | 124-127 | 152 | 117 | TH98 | 76 |
| 146 | 127-132 | 154 | 117 | TH98 | 76 |
| 168 | 149-155 | 184 | 140 | TH122 | 76,89 |
| 178 | 159-165 | 194 | 150 | TH122 | 76,89 |
| 193 | 173-180 | 206 | 166 | TH139 | 89,114 |
| 219 | 199-206 | 234 | 193 | TH139,TH180 | 89,114 |
| 245 | 224-231 | 260 | 210 | TH180,TH220 | 114 |
| 273 | 251-257 | 300 | 241 | TH180 | 114,127 |
For more information please contact:
ROSCHEN INC.
ROSCHEN GROUP LIMITED
ROSCHEN HOLDINGS LIMITED
Skype: ROSCHEN.TOOL , ROSCHEN_GROUP
WeChat: +86-137 6419 5009 ; +86-135 8585 5390
WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390
Email: roschen@roschen.com ; roschen@roschen.net
Website: http://www.roschen.net ; http://www.roschen.cn
http://www.roschen.com ; http://www.roschengroup.com