Wireline Drilling Core Drill Bit AQ BQ NQ HQ PQ Sizes / Rock Drill …
Changtan bits are available in all standard drilling sizes . Also, non-standard sized bits can be produced according to requirements from clients. Crown Height: Changtan offers crown impreg depths of 9mm, 12mm, and 16mm .The taller crown heights provide improved bit stability and reduced vibrations, enhancing bit life and performance.