Changsha Tianhe Drilling Tools and Machinery Co.,Ltd.
To survive with high quality,to develop with non-stop innovation,to repute with thoughtful service,to brand with great sincerity
Add to Cart
Simple Operation Permanent Symmetrix Casing System With Ring Bit for 114mm
| General Introduction |
1. Aplication Range
It is suitable for drilling water wells,geothermal wells, short mircopiles medium mini-type grouting hole of building, dam and harbour project.
2. Design Principles
Make the casing follow easy and the equipment and operation simple
3. Outstanding Advantages
Simple structure,simple operation,reliable quality,retrievable drilling tools,long service life.
| Raw Material |
1. Carbide
The best tungsten carbides from China are commonly applied.
Tungsten carbide from European is also available.
2. Steel:
first class special alloy steel with high strength, heat resistance and wearable
| Specification |
1. drill in overburden unstable rock
| 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 | |
| 114 | 101-103 | 125 | 93 | TH79 | 60 |
| 140 | 124-127 | 152 | 113 | TH98 | 76 |
| 146 | 127-132 | 154 | 115 | TH98 | 76 |
| 168 | 149-155 | 184 | 138 | TH122 | 76,89 |
| 178 | 159-165 | 194 | 148 | TH122 | 76,89 |
| 193 | 173-180 | 206 | 164 | TH139 | 114 |
| 219 | 199-206 | 234 | 185 | TH139,TH180 | 114 |
| 244 | 224-231 | 273 | 219 | TH180 | 114 |
| Operation Procedure |
1. when the drilling starts, the wings swing out,and reams to drive the casing shoes and tubes into the hole.
2. When finished the drilling in overburden rock formations, reverse the drilling tools and the wings will get closed, and the drilling tools can be raised from the hole.
3. Next construction can be followed.
