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Help Center7 7/8”mining Tricone Bit IADC 642 USED FOR SOFT LIMESTONE AND DOLOMITE
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7 7/8”mining tricone bit IADC 645 USED FOR SOFT LIMESTONE AND DOLOMITE
Cutting structure
Gauge rows are ovoid type and inner rows are conical type
Designed for medium hard and abrasive formation with high compressive strengths such as limestone, sandstone,dolomite and chert
Application :29000=38000psi(200-260mpa)
Shirttail protection
Two rows tungsten carbide on the shirttail , wear resistant carbide on the side of lug
Product specification
IADC CODE:645/642
BEARING TYPE :roller ball roller ,thrust button/sealed bearing/open bearing
Circulation type:jet air
Pin connection:4 1/2”API
Bit diameter:200mm(7 7/8”)
Product weight :34kgs
Operation suggestions
Weight on bit:23630-47250lbs
Rotary speed 100-60rpm
Air back pressure 0.2-0.4mpa
Tianjin huachang xingye technology co ltd
Email info@tjdrilling.com whatsapp 008618902059907
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