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IADC: 111 - Steel tooth standard open bearing roller bit for soft formations with low compressive strength and high drillability.
0 - 35 MPA
0 - 5,000 PSI
Very soft, unstratified, poorly compacted rocks such as poorly compacted clays and sandstones, marl limestones, salts, gypsum, and hard coals.
Based on the IADC Bit Classification System located in the
IADC Drilling Manual, 11th Ed. - Redesigned, 2007
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