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311.2mm FA Series Water Well Drill Bits , HDD Drill Bits IADC 517G API-7-1 Standard

FLRT Bit
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    Buy cheap 311.2mm FA Series Water Well Drill Bits , HDD Drill Bits IADC 517G API-7-1 Standard from wholesalers
     
    Buy cheap 311.2mm FA Series Water Well Drill Bits , HDD Drill Bits IADC 517G API-7-1 Standard from wholesalers
    • Buy cheap 311.2mm FA Series Water Well Drill Bits , HDD Drill Bits IADC 517G API-7-1 Standard from wholesalers

    311.2mm FA Series Water Well Drill Bits , HDD Drill Bits IADC 517G API-7-1 Standard

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    Brand Name : FLRT
    Model Number : 12 1/4 FA517G
    Certification : API-7-1, ISO 9001:2008
    Supply Ability : 300pcs per quarter
    Delivery Time : 5~45 workdays
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    311.2mm FA Series Water Well Drill Bits , HDD Drill Bits IADC 517G API-7-1 Standard

    311.2mm , FA Series , IADC 517G , Rock Bit, Water Well Drilling Bit , HDD Drilling


    RECOMMENDED DRILLING PARAMETERS FOR APPLICATION


    Types & IADC Code

    417

    437

    447

    517

    527

    537

    547

    617

    627

    637

    WOB

    KN/mm(Bit Dia.)

    0.4~0.9

    0.4~0.9

    0.35~1.0

    0.5~1.0

    0.6~1.1

    0.7~1.2

    Lb/in. (Bit Dia.)

    2285~5142

    2285~5142

    2000~5714

    2857~5714

    3428~6285

    4000~6857

    Rotation Speed (Rpm)

    140~60

    140~60

    125~50

    110~50

    100~40

    80~40



    Teeth and Tungsten Carbide Insert Buttons


    - Length and geometry relate the rock strength
    - Size of the cone and bearing structure affect the teeth

    - Teeth design criteria are:
    - Spacing and interfitting of teeth governed by tooth strength, depth and included angle
    - Shape and length, dictated by formation characteristics
    - Types of teeth, milled or inserted

    - Log slider and widely spaced teeth used for soft rock

    - Long teeth allow results in breaking greater volume

    - Wide spacing allows easy removal of drilled cuttings

    - The included angle for soft rock from 39 to 42

    - Medium hard would have a moderate number of teeth and 43 to 45 included angle

    - Hard rocks need 45 to 50 included angle

    - Milled teeth are faced with hardening metal to reduce wear

    - Milled tooth bits are suitable for soft formation

    - Insert are used for hard formation

    - There are several types of insert to suit the hardness

    - Chisel-shaped for soft rock

    - Round or spherical for medium and hard rocks

    Quality 311.2mm FA Series Water Well Drill Bits , HDD Drill Bits IADC 517G API-7-1 Standard for sale
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