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DCDMA Standard Drill Rods 50 60 70mm Drill Bit For Conventional Core Barrel Drilling

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    Buy cheap DCDMA Standard Drill Rods 50 60 70mm Drill Bit For Conventional Core Barrel Drilling from wholesalers
     
    Buy cheap DCDMA Standard Drill Rods 50 60 70mm Drill Bit For Conventional Core Barrel Drilling from wholesalers
    • Buy cheap DCDMA Standard Drill Rods 50 60 70mm Drill Bit For Conventional Core Barrel Drilling from wholesalers
    • Buy cheap DCDMA Standard Drill Rods 50 60 70mm Drill Bit For Conventional Core Barrel Drilling from wholesalers
    • Buy cheap DCDMA Standard Drill Rods 50 60 70mm Drill Bit For Conventional Core Barrel Drilling from wholesalers

    DCDMA Standard Drill Rods 50 60 70mm Drill Bit For Conventional Core Barrel Drilling

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    Brand Name : ROSCHEN
    Model Number : AQ, BQ, NQ, HQ, PQ/ BQ3, NQ2, NQ3, NQTT, HQ3, HQTT, PQ3, PQTT, T2 46, T2 56, T2 66, T2 76, T2 86, T2 101, T6 86, T6 101, T6 116, T6 131
    Certification : ISO, API
    Price : Negotiation
    Supply Ability : 50000 pcs
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    DCDMA Standard Drill Rods 50 60 70mm Drill Bit For Conventional Core Barrel Drilling

    DCDMA Standard Drill Rods 50 60 70mm Drill Bit For Conventional Core Barrel Drilling​


    DCDMA Standard Ø55.6*4.8 Drill Bit Extension Bar


    Drill Bit Extension Bar Raw Materials:


    ROSCHEN choose the best steel tubes in the market to manufacture our drill rods and pipes. Spot check will be conducted after the steel tubes delivered to company. We will make sure the compositions and specifications match the inspection report form the suppliers.


    Based on the depth of drill bore, Q series wireline core drill rods are classified into A and B grades. A grade drill rod is entire-length or ends thermal processed and B grade drill rod is entire-length processed.


    Material: 30CrMnSiA or 45MnMoB (A grade), XJY850, BG850(B grade), RS950, Eruopean/US Standard 40/41


    Drill Bit Extension Bar Specifications:


    1. High Quality Alloy Tube
    2. Through Wall heat treated tube body
    3. Consistent concentricity, straightness
    4. DCDMA Standard thread


    Heat treatment control:


    Heat treatment will greatly improve the material strength and increase the thread wear life of the rods and casings. We conduct either tru-wall or both ends heat treatment to the tube body. After heat treatment, strength, hardness, straightness and concentricity of the treated tubes will be tested in our lab.


    Thread opening process:


    Accuracy of threads will determine the use effects and life time of drill rod and casings.
    CNC latches and form cutter are used in thread opening processing to minimize error made by anthropic factors.


    Additional thread treatment:


    Surface of the threads will be cleaned to remove burr adhered after threads are opened.
    Afterwards, the tread surface will be phosphated to improve surface conditions.


    Wireline core drill rod technical parameters:


    DCDMA Drill Rods Tapered threads Wireline Drill Rod BQ NQ HQ PQ for mining industry

    StandardSpecificationBody SizeLength(M)Thickness of The EndBit Standard
    BBQA BQBØ55.6*4.83/BQ
    BRQØ55.6*4.83/BQ
    BQTØ56.5*4.75/63Internal ThickenBQ
    BQSØ54*4.5/6.253Inside & Outside ThickenBQS
    NNQA NQBØ71*5.5(Ø70.1*5.05)3/NQ
    NRQØ71*5.5(Ø70.1*5.05)3/NQ
    NQTØ72*4.8/63Internal ThickenNQ+1
    NQSØ73*5/7.53Internal ThickenNQ+1.5
    HHQR HQBØ89*5.63/HQ
    HRQØ89*5.63/HQ
    HQTØ91*5.8/6.753Internal ThickenHQ+1
    HQSØ91*5.8/7.53Inside & Outside ThickenHQ+1
    PPQA PQBØ114.3*6.353/PQ
    PRQØ114.3*6.353/PQ



    ROSCHEN can supply the following products:

    1) Drill rod: BQ, NQ, HQ, PQ
    Casing tube: BW, NW, HW, PW, HWT, PWT
    2) Bit: impregnated diamond bits, tri-tube core barrel, PDC diamond bit
    3) Reaming shell: BQ NQ HQ PQ series
    4) Core barrel: BQ, NQ, HQ, PQ head assembly and parts and overshot assembly
    5) Drill tool: lifting tool, wrench, adapter sub, hoisting plug, water swivel, overshot, outer tube & inner tube wrench, foot clamp, recovery tap, etc.


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