Tag: tricone bits USA

by Tricone Drill bit / on 26 May, 2022

tricone bits USA

IADC Pressure(KN/mm) Drill speed(r/min) Applicable strata  417/427 0.3-0.9 150-70 Very soft strata have low compressive strength and high drillability, such as mudstone, gypsum, salt, soft shale, soft limestone, etc. 437/447 0.35-0.9 150-70  515/525 0.35-0.9 180-60  Soft strata have low compressive strengthand high drillability, such