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ISO9001 Approval Symmetrix Drilling System , OD 194mm DTH Drilling System

ISO9001 Approval Symmetrix Drilling System , OD 194mm DTH Drilling System

ISO9001 Approval Symmetrix Drilling System , OD 194mm DTH Drilling System

Product Details:

Place of Origin: Hunan, China (Mainland)
Brand Name: Teamwhole
Certification: ISO9001:2008
Model Number: O.D. 194mm Concentric casing system

Payment & Shipping Terms:

Minimum Order Quantity: 1 Set/Sets Concentric overburden drill bit
Price: Negotiation
Packaging Details: Concentric overburden drill bit are packed Inner package with cartons,outer package with wooden cases.
Delivery Time: Shipped in 25 days after payment
Payment Terms: L/C, T/T
Supply Ability: 5000 Set/Sets per Month Concentric overburden drill bit
Detailed Product Description
Place Of Origin: Hunan, China (Mainland) Brand Name: Teamwhole
Model Numbe: Symmetric Overburden Casing System R194/12.7-145 Type: Concentric Casing System
Casing Tube O.D.: 194mm Casing Tube(I.D.): 168.6mm
Wall Thickness: 12.7mm Max. Pilit Bit O.D.: 166mm
Reamed Dia.: 202mm Max Nomal Bit O.D.: 145mm
Hammer Type: COP64/DHD360(TH6)/SD6/QL60/M60

O.D. 194mm Concentric overburden drill bit with blocks

 

Specification

 

1.Face: Flat,Convex,Concave,Drop-center.
2.Carbide Button Shape: Spherical,Semi-ballistic,Ballistic and Two-step
3.Bit Shank: COP64/DHD360(TH6)/SD6/QL60/M60

Retrievable model Outer Dia.of casing tube Inner Dia.of casing tube Wall thickness of casing Ring bit outer Dia(mm) Ring Bit set inner Dia.(mm) Max.outer Dia.of normal bit(mm) Hammer Type
(mm) (mm) (mm)
TOP HAMMER
R76/8-41-R32 76 60 8 88 41 58 R32
R89/8-54-T38 89 73 8 100 54 70 T38
R114/10-61-T45 114 94 10 125 61 93 T38
R140/10-75-T38 140 120 10 158 75 117 T45/T51
DTH
R114/10-80 114 101 6.5 122 80 78 COP44/DHD340/Mach44/M40/SD4/XL4/QL40
R139/10-102 139 119 10 147 102 100
R152/10-114 152 132 10 160 114 112
R168/10-130 168 148 10 177 130 128 COP54/DHD350/Mach50/M50/SD5/QL50
R193/12.7-152 193 167.6 12.7 203 152 150 COP64/COP62/DHD360/M60/SD6/XL6/QL60/TD150
R219/12.7-175 219 193.6 12.7 232 175 173
R244/12.7-198 244 218.6 12.7 254 198 196 DHD380/COP84/SD8/QL80/TK18
R273/12.7-224 273 247.6 12.7 285 224 222
R323/12.7-271 323 297.6 12.7 338 271 269
R406/12.7-350 406 380.6 12.7 420 350 348
R508/16-444 508 476 16 524 444 442
R609/16-553 609 577 16 637 553 551 QL200/SD18/
NUMA180/TH18/
TS18/TK18
R711/16-639 711 679 16 731 639 637 QL200S/TH32/
R762/16-690 762 730 16 781 690 688 TK24
R812/16-734 810 780 16 834 734 732
R914/16-835 914 882 16 935 835 833
R1016/16-911 1016 984 16 1033 911 909 QL300

 

General Introduction

 

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

1.The stable and reliable working performance and the less vibration of drill rig.

2.Flexible to open and close.

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.

 

Raw Material

 

Steel:

first class special alloy steel with high strength, heat resistance and wearable


Carbide
The best tungsten carbides from China are commonly applied.
Tungsten carbide from European is also available.

 

 

 

Structural Advantage
 

Straightness: ensure the staightness of borehole in different topographic and geological conditions.

Adaptability: ensures penetration efficiency in complex topograhic and geological conditions, such as gravel and landfill of construction refuse.

Lower torque: the system torque is less than eccentric casing system.

Easy to unlock and re-lock: easy to re-lock after unlock.

Drilling at any angle: concentric casing system can drill under horizontal, vertical and inclined condtions.

Enviromental: better than eccentric casing system because of its advantages of drilling smoothily, small vibration and low noise, it's more suitable for construction in urban areas.

 

 

 

Contact Details
Changsha Tianhe Drilling Tools and Machinery Co.,Ltd.

Contact Person: Ms.chen

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