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DTH bits

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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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