12 1/4”mining Tricone Bit IADC 645USED FOR Limstone ,sandstone Dolomite and Chert
12 1/4”mining tricone bit IADC 645USED FOR limstone ,sandstone dolomite and chert
Cutting structure gauge rows are ovoid type and inner rows are conical type
Designed for medium hard and abrasive formation with high compresssive strengts such as limstone ,sandstone dolomite and chert
Application 29000-38000psi 2000-260mpa
Sjirttaol proection two rows tungsten carbide on the shirttail , wear resistant arbide on the side of lug
Product specification
IADC CODE 645/642
Bearing type roller-ball-thrust button /sealed bearing
Circulation type jet air
Connection 6 5/8”API
BIT DIAMETER 311MM 12 1/4”
Product weight 11kgs
Weight on bit 36750-73500lbs
Rotary speed 110-80rpm
Air back pressure 0.2-0.4mpa
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