4140 steel rockwell hardness

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  • Cheap High strength 1 inch - 24 inch Chevron drag bits / Oilfield Drill Bits wholesale
    ... Chevron Bits design features include: a solid one piece heat treated, 4140 alloy steel body for bit strength & durability hardness rated 28-32 Rockwell 3/16 Tungsten carbide profile cutting edges Ultra high strength brazing to more
    Brand Name:ROSCHEN
    Model Number:3" to 24"
    Place of Origin:GERMANY

    High strength 1 inch - 24 inch Chevron drag bits / Oilfield Drill Bits

    ROSCHEN GROUP
    [Shanghai,China]
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