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 Tungsten
carbide insert bits for hard formations
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Hard, well-compacted rocks such as: hard silica limestones,
quarzite streaks, pyrite ores, petryfied, hematite ores,
magnetite ores, chromium ores, phosphorite ores, granites.
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A large number of short
inserts with great top angle, closely spaced, ensure optimum
condition for drilling in hard formation. Minimum cone
axis offset against centre line of the bit prevents the
inserts from breakage.
A large number of heel row inserts maintain full gage
longer. |
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