The company is specialized in manufacturing DHT bit, DHT hammer, air-leg rock drill, product quality has reached advanced level in the industry.
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CIR90. CIR110. CIR130 Series DTH Drill Bit Technical Data
Diameter P/N No. - Button Diameter,mm Flushing holes Spline No. Weight
DTH Hammer
mm inch Gauge Front
Convex Front
90 3  9/16 ZRQ90 6-Φ14Z 2-Φ12Z 2 6 3.9  ZRC3.5-CIR90
90 3  9/16 ZRQ90B 6-Φ14Z(H) 2-Φ12Z 2 6 3.9
90 3  9/16 ZRQ90C 6-Φ14Z(H) 2-Φ12Z 2 6 3.9
**We can customize according to your specific requirements for the bit dia., No. of flushing holes, button
  shape,face shape etc.


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Add:No.3701, Zhuangjian Road, Kuiwen Economic Development District, Weifang City, Shandong Province, China