Symmetrix System Retrievable Casing 114mm for DTH Hammer DHD 3.5

• Type: Core Drilling Rig
• Material: Alloy Steel
• Condition: New
• Power Type: Electric
• Brand: Prodrill
• Air Pressure: 20 Bar
• Model NO.: Casing O. D 114 mm
• Color: Gold, Red
• Hammer Type: 3inch, 4inch
• Wall Thichness of Casing Tube: 6.5 ~ 10.5mm
• Outer Dia. of Casing Tube: 114 ~ 168mm
• Inner Dia. of Casing Tube: 101 ~ 148mm
• Transport Package: Wood Package
• Specification: CE
• Trademark: PRODRILL
• Origin: China
• HS Code: 84671900
• Production Capacity: 10000pec/Months

Product Description

Description
 
The Prodrill 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. 

Application Range: It is suitable for drilling water wells , geothermal wells , short mircopiles ,medium mini-type grouting hole of building , dam and harbour 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.
 


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
 
Specification

Symmetrix Overburden Drilling System Specification
Code No.	Casing O.D.	Casing Wall Max	Ring Bit I.D.	Ring Bit O.D.	Pilot Bit O.D.	Hammer Tpye	Drill Pipes
	mm	mm	mm	mm	mm	inch	mm
SOD 108	108	9	77	118	86		76
SOD 114	114	11	82	127	91	3.5″	76
SOD 127	127	11	92	136	101		76
SOD 140	140	13	105	152	117	4″	76
SOD 146	146	14	105	154	117		76
SOD 168	168	13	125	184	140	5″	76,89
SOD 178	178	13	140	194	150	5″	76,89
SOD 193	193	13	150	206	164		89,114
SOD 219	219	13	165	234	184	6″	89,114
SOD 244	244	13	190	260	210	6″	114
SOD 273	273	14	220	305	240	8″	114,127
SOD 323	323	13	255	348	284	8″	127
SOD 406	406	18	340	440	364	10-12″	140
SOD 457	457	18	385	488	413		140
SOD 508	508	18	440	538	464	12-15″	140
SOD 558	558	18	485	590	514		140
SOD 610	610	18	540	642	566	18″	168
SOD 660	660	18	590	694	615		168
SOD 711	711	18	640	745	665		168
SOD 762	762	18	685	798	716		168
SOD 863	863	18	785	900	815		168

Our main products are as below:
 
Construction & Mining & Rock Drill Tools:
A. DTH Hammer and Bit (2''-24''), Overburden Drilling System; RC System.
B. Top Hammer (drill hole dia.: 33 ~ 152mm).
1) Thread Tools (Button Bits, Rod, Coupling, Shank Adaptor): (R25/28/32/38, T38/45/51, ST58,GT60).
2) High Rang Soundless Cracking Agent (dia. 40 ~ 50mm).
 
Quarrying Drill Tools (drill hole dia.: 17 ~ 45mm).
1) Taper Drill Tools (Bit: button/chisel; Rod: Tapered/Integral), Carbide Tips, Segment, Grinding Wheel, Grinder.
3) Pneumatic Rock Drill: Hand-held (Y24, TY24C), Air leg (YT28) and Gasoline (YN27J).
4) Expansive Mortar (dia. 30 ~ 35mm); Hydraulic Rock Splitter PD40-250, Aluminum Cylinder.
5) Air Pushing Bag, Water Bag; Pneumatica Splitter G10, Hand Splitter, etc.
6) Hydraulic Breaker hammer, Paving breaker TPB40, 60, 90 for rock or concrete demolition.
7) PD28, PD45, PD90, PD115/HC20 Excavator mounted rock drilling.