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Long Life Span Concentric Drilling System , OD480mm DTH Drilling Equipment

Long Life Span Concentric Drilling System , OD480mm DTH Drilling Equipment

    • Long Life Span Concentric Drilling System , OD480mm DTH Drilling Equipment
    • Long Life Span Concentric Drilling System , OD480mm DTH Drilling Equipment
  • Long Life Span Concentric Drilling System , OD480mm DTH Drilling Equipment

    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: 480mm Symmetric Overburden Casing System Type: Concentric Casing System
    Material:: Carbides Use: Well Drilling
    Rock Drilling To: Concentric Overburden Casing System

    480mm 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: COP/DHD/QL/SD/MACH/BR

    A B C D E F

    Outer Dia. of

    Casing Tube

    Inner Dia. of

    Casing Tube

    Reamed

    Dia.

    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

     

    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.

     

     

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

    Contact Person: Ms.chen

    Send your inquiry directly to us (0 / 3000)