Q® is the undisputed, worldwide standard for wireline coring drill rods. With 40 years invested into our proprietary Q® wireline drill rod, Boart Longyear has met the market demand through innovative engineering and state-of-the-art manufacturing techniques.
Features
TUBING
High quality alloy steel tubing
Consistent concentricity, straightness and heat treatment
Parallel wall tubing in standard DCDMA sizes
THREAD
Tapered, course threads (3 threads per inch) provides easy make and break
Load efficiency of 30% provides sufficient strength for average applications
THRU-WALL HEAT TREATMENT
Nominal 32 HRc provides 140% material strength
Heat treated box threads significantly increase thread wear life
CASE HARDENING
Boart Longyear is the only manufacturer in the industry to case-harden threads
Significant research, development and field testing has resulted in a hardening process that is unmatched in the marketplace
Pin thread crest is hardened to nominal 55 HRc to eliminate damaging ‘adhesion’ wear
Eliminates the transfer of wear material back and forth which is what happens between threads of equal hardness, leading to large scale galling and joint seizing
