BQ drill rod
BQ wireline drill rod case hardening BQ Pin thread crest is hardened to nominal 50 55 HRC to eliminate damaging adhesion wear Eliminates the transfer of wear material back and forth as seen between threads of equal hardness leading to large scale galling and joint seizing BQ wireline drill rod overview BQ wireline drill rod thread
Diamond Drill Tools Australasian Mining Services
PQ wireline drill rod case hardening PQ Pin thread crest is hardened to nominal 50 55 HRC to eliminate damaging adhesion wear Eliminates the transfer of wear material back and forth as seen between threads of equal hardness leading to large scale galling and joint seizing PQ wireline drill rod overview PQ wireline drill rod thread