... , drill pipe, Mud pump and stablizers for water well, oil field, construction, geothermal, directional boring, and underground foundation work ... PDC bits/ PDC bits1) Be used for water well, oil field, underground, construction, geothermal, directional boring 2) Various ... blade and long parabolic configuration ,ensure optimal bottom hole flow pattern and anti-balling .Anti –whirl design improves ROP ...