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Concentric overburden drill bit
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Product Details
| Place of Origin | Hunan, China | Brand Name | Tianhe | |
| Model Number | symmetrix 90-815 overburden drill bit | Type | Other, casing system | |
| Material | Other, carbide, Carbide | Use | Well Drilling |
Product Description
Specifications
Applied to the drilling where rock formation is overburden and need casing tube to support.Certificate: ISO9001:2008, SONCAP.
Application Range
It is recommended to drill in rock formation where contains some ovals and fractures.
Design Principles
Make the casing follow easy and the equipment and operation simple
Outstanding Advantages
The stable and reliable working performance and the less vibration of drill rig and flexible to open and close.
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.
Order Guide: A+B+C+D+G
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 |
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 |
Contact Us
- Changsha Tianhe Drilling Tools And Machinery Co., Ltd.
- Contact nameSpring Huang Chat Now
- Phone86-731-85853281,13077324210
- AddressLianfeng Country, Hanpu Town, Yuelu Section, Changsha, Hunan
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