Specification for rotary drill rods and tungsten carbide tipped rotary drill bits

समान संसाधन

• Percussive rock-drilling bits, rods and stems
  द्वारा: 8096 British Standards Institution
• Rotary, kelly and swivel
  द्वारा: University of Texas. Petroleum Extension Service
  प्रकाशित: (1966)
• Seismic while drilling : fundamentals of drill-bit seismic for exploration /
  द्वारा: 260360 Poletto, Flavio, और अन्य
  प्रकाशित: (2004)
• An investigation into the percussive drill bit penetration of rock /
  द्वारा: 322463 Mustapha Kamal Shahrom
• An investigation into the percussive drill bit penetration of rock / [mikrofilem]
  द्वारा: 322463 Mustapha Kamal Shahrom