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        • Product: 8-1/2“ GS1305ST
        • Register Date: 2015-04-15
        • Views : 504

          Product Parameter  
          Bit Type 8-1/2" GS1305ST
          IADC Code S433
          Number of Blade 5
          Primary Cutter Size Φ13 mm
          Nozzle Qty.&Type 5NZ
          Gauge Length 55 mm
          Connection 4-1/2" API REG
          Make up Torque 24.1~26.5 KN·m
          Operating Parameters  
          Rotary Speed 60~260 rpm
          Weight on Bit 20~100 KN
          Max. WOB 130 KN
          Flow Rate 22~35 lps
          Features Double rows spiral five blades design, rational allocation of high quality small size PDC cutters. The maximum local cutters equivalent density, improve the offensive and abrasive resistance of the bit. High quality arc PDC cutter gauge, reduce the abrasion of rock on the bit’s body, increase wear resistance and stability of the drill gauge. The surface of the blade weld high-performance wear-resistant materials, improve bit’s wear resistance and erosion resistance.
          Application Medium hard formation with high compressive strength and abrasive, such as Limestone, Anhydrite, Dolomite and so on.