• tungsten carbide button bits,rock drill rods,thread button bit,hard rock drilling bits,Shandong Sinic Rock Drilling Tools Co.,Ltd.
  • Sinic Rock Drilling Tools CO.,LTD.

    +86-635-6366658 / +86-635-6319568

          

    Sales@sinicdrilltool.com

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Twist drilling tools Twist drill rod

 Introductions and features of twist drill pipe/spiral drill pipes:


   Spiral drill pipes  Design feature: overlay spiral. It guarantees big torque, quick slagging, and clear hole forming. Besides, the drill bit will hardly get stuck.

Application: soft coal bed, and other formation similar to coal bed.










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