18inch Overburden Drilling Systems with Ring Bit DTH Bit

Product Details
Customization: Available
Type: Core Drilling Rig
Material: Alloy Steel

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  • 18inch Overburden Drilling Systems with Ring Bit DTH Bit
  • 18inch Overburden Drilling Systems with Ring Bit DTH Bit
  • 18inch Overburden Drilling Systems with Ring Bit DTH Bit
  • 18inch Overburden Drilling Systems with Ring Bit DTH Bit
  • 18inch Overburden Drilling Systems with Ring Bit DTH Bit
  • 18inch Overburden Drilling Systems with Ring Bit DTH Bit
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Basic Info.

Power Type
Electric
Condition
New
Brand
Prodrill
Air Pressure
20 Bar
Color
Gold, Red
Hammer Type
3inch, 4inch
Outer Dia. of Casing Tube
114 ~ 168mm
Inner Dia. of Casing Tube
101 ~ 148mm
Wall Thichness of Casing Tube
6.5 ~ 10.5mm
Transport Package
Wood Package
Specification
CE
Trademark
PRODRILL
Origin
China
HS Code
84671900
Production Capacity
10000pec/Months

Product Description

18inch Overburden Drilling Systems with Ring Bit DTH Bit

Advantage:
- Straight Holes and Fast Penetration Rate.
- Less Torque in all ground conditions.
- Easy System to lock and Unlock Ring.
- Drilling at any angle required.
- More Holes and Low investment.


The Pro Drill 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


Concentric (or Symmetrix) Overburden Casing System with Blocks
Model: 1) Casing Shoe + pilot bit + 2 pcs Blocks; Or
2) Casing Shoe + pilot bit + 3 pcs Blocks; Or
3) Casing Shoe + pilot bit + 4 pcs Blocks.


Concentric (or Symmetric or Symmetrix) Overburden Casing System With Wings
Symmetric or Symmetrix Overburden Casing Drilling System With Wings
Symmetrix Overburden Casing Drilling System With Two Wings

Concentric Overburden Casing System

Outstanding:
1. The stable and reliable working performance and the less vibration of drill rig.
2. Flexible to open and close.

Design Principles:
Make the casing follow easy and the equipment and operation simple
The stable and reliable working performance and the less virbration of drill rig.

Operation Procedure:
1. When the drilling starts, the blocks slides down through the grooves on pilot bit, and reams to drive the casing shoes and tubes into the hole.

2. When finished the drilling in overburden rock formations, raise the drilling tools and the blocks will get closed through the grooves, and the drilling tools can be pulled out from the hole.

3. Next construction can be followed.

Product Photos:



Size and Specification:



Dear Sir or Madam: You can order
1) Wings (2pcs) + Locking System + Guide Device = Assembly
2) Or order separately.
3) If you need o. Dia. 178mm or above, we suggest to use our SLIDE BLOCKS model.


Application Range and Examples:
It is recommended to drill in rock formation where contains some ovals and fractures.

Warranty
The company is responsible for any problem caused by defaulty of material and maching.
The broken parts will be replaced at the sight of photos and product serial code.

Other Structures:
Concentric (or Symmetric or Symmetrix) Overburden Casing System: With ring bits, with wings and with slide blocks.
 
Product Name: Concentric casing system with ring bit & Concentric casing system (Permanent)
Material: carbide
MOQ: 5pcs
Design Principles  Make the casing follow easy and the equipment and operation simple 
Type  Concentric casing system
Application It is recommended to drill in rock formation where contains some ovals and fractures.
Certificate ISO9001   SONCAP 
Outstanding Advantages  The stable and reliable working performance and the less vibration of drill rig and flexible to open and close.

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