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  • Sinodrills DTH bits are made of superior quality alloy steel which is made by Timken in U.S. Besides, all our DTH bits are using the brand "Element Six" T.C carbide which provides (the T.C buttons) for Boart Longyear

    SINODRILLS DTH Bits


    The DTH bits is the tool cutting rock. Sinodrills DTH bits are made of superior quality alloy steel which is made by Timken in U.S. Besides, all our DTH bits are using the brand "Element Six" T.C carbide which provides (the T.C buttons) for Boart Longyear. In addition art manufacturing technology makes our DTH bits with higher and more reliable quality.


    Different face style makes DTH bits suitable for various rock conditions.

    Flat face:  This is an universal design, especially for hard and abrasive rock formation. So typically, flat face with hemi-spherical buttons design is the most popular choice.


    Convex face: A classic design for soft to medium hard rock formation which is not so abrasive. This design have very excellent penetration rate but poor in hole deviation if rocks are hard.


    Concave face: Medium hard to hard rock formations which is less abrasive and fractured. Especially for deep hole drilling, excellent control over hole deviation.


    DGR face:  A special design for hard or very hard rock conditions, double gauge row buttons provide very excellent ware-resistance and very longer life time.  It is usually used for some bigger diameter DTH bits.

    Besides, we are manufacturing the DTH bits with various shanks so they can be compatible with different DTH hammers

    Bit size

    Shank type

    Recommended DTH bir diameter

    3.5''/3'' DTH Hammer bits

    COP34, DHD3.5, MISSION30, BR3 shank

    90mm to 105mm

    4'' DTH Hammer bits

    DHD340, QL40, MISSION40, SD4 shank

    110mm to 130mm

    5'' DTH Hammer bits

    DHD350, QL50, MISSION50, SD5 shank

    134mm tio 152mm

    6'' DTH Hammer bits

    DHD360, QL60, MISSION60, SD6 shank

    152mm to 203mm

    8'' DTH Hammer bits

    DHD380, QL80, MISSION80, SD8 shank

    203mm to 305mm

    12'' DTH Hammer bits

    DHD112, SD12 and QL120 shank

    Available upon to customers' request


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