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Concentric Overburden Casing Drilling System O.D.273mm With Retrievable Pilot Bits

Good quality Button Drill Bits for sales
Good quality Button Drill Bits for sales
The top hammer series are available to Atlas and Sandivik,I have been their agent before,but their price is too high,the cooperation with Prodrill brings me new business and gives me more profit space,I believe in it and recommended Prodrill to you.

—— Switzerland

I am confidence the quality is similar to Robit and Rocksmith and with our designs having better carbide patterns and sizes I think we should do well.

—— Spain

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Concentric Overburden Casing Drilling System O.D.273mm With Retrievable Pilot Bits

China Concentric Overburden Casing Drilling System O.D.273mm With Retrievable Pilot Bits supplier
Concentric Overburden Casing Drilling System O.D.273mm With Retrievable Pilot Bits supplier Concentric Overburden Casing Drilling System O.D.273mm With Retrievable Pilot Bits supplier

Large Image :  Concentric Overburden Casing Drilling System O.D.273mm With Retrievable Pilot Bits

Product Details:

Place of Origin: China
Brand Name: PRODRILL
Certification: ISO:9001
Model Number: Concentric overburden drilling system O.D.273mm

Payment & Shipping Terms:

Minimum Order Quantity: 1 Pcs
Price: Negotiable
Packaging Details: WOODEN BOX
Delivery Time: 10-15 DAYS
Payment Terms: T/T
Supply Ability: 2000Pcs/Month
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Detailed Product Description
Type: Drill Bit Machine Type: Drilling Tool
Material: Carbide Processing Type: Forging
Use: Coal Mining O.D.: 273mm

Concentric overburden drilling system O.D.273mm;Symmetric / Concentric Overburden Casing Drilling System

 

Symmetric/Centrex/Symmitrix Drilling System 
Symmetric is a concentric drilling system with retrievable pilot bits. 

Permanent Model 
The ring bit will be left in the hole after drilling finished. 

This system drills in any direction and in any type of ground condition. 

It is, in fact, the most flexible and efficient overburden system on the markettoday. 

The Symmetric components are made up of: 
---A pilot bits with large internal flushing holes and external flushinggrooves 
---Symmetrical ring bit (reamer) with internal bayonet coupling 
---Casing shoe for driving of casing. 
The Pilot bits is attached to any common DTH hammer shank. 

The Prodemo symmetric drilling system is designed to drill and case a hole simultaneously through unstabled 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 minimising the disruption of the surronding of the drill hole.

Advantages: 
Full face head desigh for faster penetration and straighter hole 
Less torque is required 
Can drilll in vertical, horizotal or any direction 
Minimize disruption to the drilled hole 

 

Casing Tube Reamed Hole Dia
(mm)
Casing Shoe Inner Dia
(mm)
DTH Hammer Type(E) Drill Pipe
(mm)
Model
Outer Dia(mm) Inner Dia(mm)
114 102-104 127 91 HD35/QL30 76 SOD114
127 115-117 136 101 HD35/QL30 76 SOD127
140 124-128 152 117 HD45/QL40 76 SOD140
168 148-156 185 140 HD55/QL50 76/89 SOD168
178 158-166 195 150 HD55/QL50 76/89 SOD178
183 163-171 193 154 HD55/QL50 89/114 SOD183
194 174-182 211 166 HD65/QL60 89/114 SOD194
219 199-207 237 193 HD65/QL60 89/114 SOD219
273 253-257 308 241 HD85/QL80 114/127 SOD273
325 305-309 348 281 SD10/NUMA100 127 SOD325
406 382-388 440 364 SD10/NUMA100 140 SOD406

 

Concentric Overburden Casing Drilling System O.D.273mm With Retrievable Pilot Bits

 

Contact Details
Xiamen Prodrill Equipment Co., Ltd

Contact Person: Prodrill

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