... 3.IADC:116,217,437,517,537,617 4.oil,water well Mill tooth Tricone ROCK Bit -TCI Tricone Bit Specifications: Bit ... Speed(rpm)TFJ737G737High abrasive formations such as limestone, dolomite,chert and hard sandstone,etc.Large radius conical compacts in inner row ... ,spherical compacts in crest and outer row,and inequable spaced compacts arrangement.0.50~1.20220~40TGA114114Very ...