PDC bit.
Drill bits:
1)Certified by ISO9001&API
2))Used for water well, oil field
3)IADC:114-117,127,437,517,617,637
200MM*200MM*250mm
TCI tricone rock bits:
1)Certified by ISO9001&API
2))Used for water well, oil field
3)IADC:114-117,127,437,517,617,637.
