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Carbides Casing Advancement Systems For Water Well Projcet OD560mm

Carbides Casing Advancement Systems For Water Well Projcet OD560mm

Carbides Casing Advancement Systems For Water Well Projcet OD560mm

Product Details:

Place of Origin: Hunan, China (Mainland)
Brand Name: Teamwhole
Certification: ISO9001:2008
Model Number: 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: 560mm Symmetric Overburden Casing System Type: Concentric Casing System
Material:: Carbides Use: Well Drilling
Rock Drilling To: Concentric Overburden Casing System

560mm Concentric overburden drill bit with blocks




1.Face: Flat,Convex,Concave,Drop-center.
2.Carbide Button Shape: Spherical,Semi-ballistic,Ballistic and Two-step


Outer Dia. of

Casing Tube

Inner Dia. of

Casing Tube



Min. Inner Dia. of

Casing Shoe

Hammer Type Drill Pipes
mm mm mm mm   mm
168 149-155 184 140 TH122 76,89
178 159-165 194 150 TH122 76,89
193 173-180 206 164 TH139 89,114
219 199-206 234 182 TH139,TH180 89,114
244 224-231 260 210 TH180,TH220 114
273 251-257 305 240 TH180 114,127
323 301-310 348 284 TH180,TH220 127
406 382-388 440 364 TH220,TH275 127,140
457 433-439 488 413 TH275 127,140
508 484-490 538 464 TH275 140
558 534-540 590 514 TH275,TH398 140
610 586-592 642 566 TH275,TH398 140,168
660 636-642 694 615 TH398 168
711 687-693 745 665 TH398 168
762 738-744 798 716 TH600 168
863 839-845 900 815 TH600 168

Concentric overburden drill bit with blocks for water well projcet


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



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

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




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

Contact Person: Ms.chen

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