locking coupling,stabilized locking coupling,full-hole locking coupling,BQ NQ HQ PQ locking coupling.
Locking coupling is a part of outer tube assembly. It connects the drill rod to the outer tube assembly. The locking coupling provides a mating surface which the head assembly latches ride against while drilling. Locking couplings stabilizes core barrel assembly against the drill hole wall.
Locking couplings are made of high-quality alloy steel with good strength, toughness and wear life.
Locking couplings overview:
Stabilized locking coupling features:
●Has wear pads with high density tungsten for improved wear life
●Can be used in all drilling conditions
●Also has with tang type which located on the pin end of the locking coupling
Full-hole locking coupling features:
●Oversized-pads for improved hole stabilization
●Pads induction-hardened for increased wear resistance
●For use in competent ground conditions
●Hard-faced latch resting area for increased latching reliability
●Also has with tang type which located on the pin end of the locking coupling
Stabilized locking couplings offerings:
BQ Stabilized Locking Coupling
BRQ Stabilized Locking Coupling
BQ Stabilized Locking Coupling with Tang
BRQ Stabilized Locking Coupling with Tang
NQ Stabilized Locking Coupling
NRQ Stabilized Locking Coupling
NQ Stabilized Locking Coupling with Tang
NRQ Stabilized Locking Coupling with Tang
HQ Stabilized Locking Coupling
HRQ Stabilized Locking Coupling
HQ Stabilized Locking Coupling with Tang
HRQ Stabilized Locking Coupling with Tang
PQ Stabilized Locking Coupling
PQ Stabilized Locking Coupling with Tang
PHD Stabilized Locking Coupling
PHD Stabilized Locking Coupling with Tang
Full-hole locking coupling offerings:
BQ Full-hole Locking Coupling
BRQ Full-hole Locking Coupling
BQ Full-hole Locking Coupling with Tang
BRQ Full-hole Locking Coupling with Tang
NQ Full-hole Locking Coupling
NRQ Full-hole Locking Coupling
NQ Full-hole Locking Coupling with Tang
NRQ Full-hole Locking Coupling with Tang
HQ Full-hole Locking Coupling
HRQ Full-hole Locking Coupling
HQ Full-hole Locking Coupling with Tang
HRQ Full-hole Locking Coupling with Tang
PQ Full-hole Locking Coupling
PQ Full-hole Locking Coupling with Tang
PHD Full-hole Locking Coupling
PHD Full-hole Locking Coupling with Tang