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hard rock roller tricone drill bit

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دریل سه مخروط سنگ سخت رولر Tricone Bit 8 1/2 "کد IADC 537 617 437 برای گرانیت

8 1/2" IADC Code 537 617 437 Tri-Cone Hard Rock Roller Tricone Drill Bit For Granite Non-sealed Roller Air Bearing Mining Roller Cone Bits This series bits are non-sealed Roller Bearing bits that are cooled and cleaned by air with fast drilling speed and good strength which are used for the ...

537 کد IADC Tricone Roller Rock Bit 6 12 14 5 12 تریکون دریل بیت

Non-sealed Roller Air Bearing Mining Roller Cone Bits Tricone Roller Rock Bit 6 12 14 5 12 Tricone Drill Bit This series bits are non-sealed Roller Bearing bits that are cooled and cleaned by air with fast drilling speed and good strength which are used for the development of open-pit coal mines, ...

98mm سه مخروط صخره رولر حفاری بیت برای نفت و معدن

Tci Tricone Three Cone Rock Roller Drill Bit For Oil Rig And Mining API oil rig drilling rock bits 60mm,65mm,76mm,93mm,95mm,98mm(3 7/8”),101.6mm,114mm,118mm,120mm,127mm(5”) 130.1mm(5 1/8”),133.3mm(5 1/4”),139.7mm(5 1/2”),142.8mm(5 5/8”),149.2mm(5 7/8”) 152.4mm(6”),155.5mm(6 1/8”),158.7mm(6 1/4”),161...