1) High-strength,high flexibility,high temperature,high wear resistance. 2) High-precision metal seal. 3) locking roller ball,to adapt to high-speed. 4) The use of high strength hig toughness carbide teeth. 5) Hours in the rotary cone bit with the impact,crushing and shearing the role of broken rock. 6) cone bit to adapt to the soft,medium and hard of various strata. 7) Reasonable price and long working life.
