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Product Specification
  Type specification(inch):
4 1/2
  Type specification(mm):
114.3mm
  IADC:
217
  Additional features:
G
  Formation:
Medium to Medium Hard Formation of High Crushing Resistance
  Drilling condition:
rotary drilling、high temp.drilling、deep drilling、motor drilling
  Bearing Type:
journal bearing
  Total teeth count:
72
  Gage row teeth count:
41
  Number of gage rows:
3
  Number of inner rows:
4
  Journal angle:
36°
  Offset:
5
  API connection(REG pin):
2 3/8
  Weight on bit(KN):
57-137
  Rotary speed(Rpm):
300-60
  Recommened upper torqueKN.M:
4.1-4.7
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