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[China]
Trade Verify
Address: Room9-616, No. 10 Zhenxing Road (MDW Plaza), Changping District, 102200 Beijing, China
Contact name:Yingkai Zhang
KSQ Technologies (Beijing) Co. Ltd |
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Durable Water Well Drill Bits Symmetric / Concentric / Overburden Casing Drilling System
The symmetric/Concentric drilling system is designed to drill and
case a hole simultaneously through unstable ground conditions. The
driver bit 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, and thus minimizing
the disruption of the surrounding of the drill hole.
Application Range: It is suitable for drilling water wells , geothermal wells , short
miscopies ,medium mini-type grouting hole of building , dam and
harbor project .
1. Ring bit and casing shoe assembly is welded to casing prior to
drilling. Lock the assembly into pilot bit with hammer. The pilot
bit's upper shoulder engages the shoulder of the casing shoe.
2. Hammer's percussive energy is transferred through the pilot and
ring bits, crushing rock . Part of impact energy advances casing.
3. On completion of drilling and casing , the drill string with
pilot bit is retrieved by a slight reverse rotation to unlock the
bayonet coupling . The ring bit stays in the hole , and can be
recovered only if the casing is retrieved
4. Drilling continues to the desired depth in the bedrock using a
conventional drilling.
| 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 |
| 108 | 93-99 | 118 | 86 | 76 | 77 |
| 114 | 101-103 | 127 | 91 | 76 | 82 |
| 127 | 114-116 | 136 | 101 | 76 | 92 |
| 140 | 124-127 | 152 | 117 | 76 | 105 |
| 146 | 127-132 | 154 | 117 | 76 | 105 |
| 168 | 149-155 | 184 | 140 | 76,89 | 125 |
| 178 | 159-165 | 194 | 150 | 76,89 | 140 |
| 193 | 173-180 | 206 | 164 | 89,114 | 150 |
| 219 | 199-206 | 234 | 184 | 89,114 | 165 |
| 244 | 224-231 | 260 | 210 | 114 | 190 |
| 273 | 251-257 | 305 | 240 | 114,127 | 220 |
| 323 | 301-310 | 348 | 284 | 127 | 255 |
| 406 | 382-388 | 440 | 364 | 140 | 340 |
| 457 | 433-439 | 488 | 413 | 140 | 385 |
| 508 | 484-490 | 538 | 464 | 140 | 440 |
About us
MIROC® Rock Drilling Tools are Rock Drilling Tools Brand by KSQ
Tecnologies (Beijing) Co. Ltd.
KSQ Technologies (Beijing) Co. Ltd. provides exceptional technical
know-how in development, production, and application. The company
has adopted advanced manufacturing processes to ensure high quality
steels and tungsten carbide inserts for its rock drilling
accessories. Its personnel understand clients’ drilling needs, and
have the service skills to recommend the right drilling tools for
the job. Its experienced product developers can also create custom
tools. Furthermore, the company’s development team introduces
innovative products each year – tools that are rigorously tested in
the field and proven
to perform beyond industry expectations.
MIROC® Rock Drilling and Ground Support Tools include:
Integral Rods
Plug Hole Rods
Tapered Drilling Tools
Extension Drilling Tools
Drifting and Tunneling Tools
Reaming Tools
Shank Rods
Shank Adapters (Striking Bars)
Down-the-hole (DTH) Bits
Down-the-hole (DTH) Hammers
