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Eccentric overburden casing drilling systems

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  • DTH Hammer

    The DTH hammer acts as a role of converting the air pressure to the impact energy, simultaneously transferring impact energy and rotation force to DTH bits.

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  • DTH bits

    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

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  • DTH drill pipes

    SINODRILLS DTH drill pipe DTH drill pipes play a significant role in all DTH drilling, regardless of application, rock type, hole depth or drill rig. The key features of a high quality DTH tube are durability

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  • Symmetric overburden casing drilling systems

    Symmetric is a system comprised of an ingeniously simple concentric method of drilling through overburden with casing

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  • Eccentric overburden casing drilling systems

    Eccentric is the most economical solutions because its ingenious reaming wing the bit is retrievable can be used at the next hole

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Eccentric overburden casing drilling systems

Eccentric is the most economical solutions because its ingenious reaming wing the bit is retrievable can be used at the next hole

  • Payment:

    T/T, L/C, D/A, D/P
  • Product Origin:

    CHINA
  • Color:

    Orange
  • Shipping Port:

    Main port of China
  • Lead Time:

    20 Days
  • Product Details

SINODRILLS Eccentric overburden casing drilling systems



Eccentric is the most economical solutions because its ingenious reaming wing the bit is retrievable can be used at the next hole. This is particularly design for shallow holes, as is often the case in water well drilling, geothermal wells and for shallow micro-piling work. Odex is ideal for short holes in consolidated overburden. The component of Eccentric system consists of Pilot bits, Reamer bits, Guide device and casing shoe.


When drilling, the reamer bit will rotate out to enlarge the hole which enough for the casing tube slide down behind the reamer. When reached required depth, the drill pipe will drill to the reverse direction and the reamer bit will retract, it is allowing the whole drilling system to pass through the casing.


The below size of Eccentric systems which are available, and the special design is upon customer’s requirement:

Eccentric 90, Eccentric 114, Eccentric 140, Eccentric 165, Eccentric 190 and Eccentric 240

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Symmetric is a system comprised of an ingeniously simple concentric method of drilling through overburden with casing

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Symmetric is a system comprised of an ingeniously simple concentric method of drilling through overburden with casing

down the hole hammer

The DTH hammer acts as a role of converting the air pressure to the impact energy, simultaneously transferring impact energy and rotation force to DTH bits.

down the hole drill pipes

SINODRILLS DTH drill pipe DTH drill pipes play a significant role in all DTH drilling, regardless of application, rock type, hole depth or drill rig. The key features of a high quality DTH tube are durability

down the hole hammer

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

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If you have questions or suggestions,please leave us a message,we will reply you as soon as we can!