Steel tube threaded joint having an impervious device at the lev
Stepped thread and cutoff thread joint exhibiting excellent fati
Straight hole drilling system
Strengthened pipe fitting and method
Subsurface drill string
Sucker rod connection with improved fatigue resistance,...
Swaged tube coupling
System and method for increasing wall thickness on end of pipe o
Tapered ceramic GC fitting and assembly
Tapered screw joint and device for emergency recovery of boring
Thread design for uniform distribution of makeup forces
Thread form for pipe joints
Thread form with multifacited flanks
Thread from with multifacited flanks
Thread joint for a drill string for percussive rock-drilling
Thread joint for tube
Threaded and coupled connection for improved fatigue resistance
Threaded assembly of metal tubes designed to contain a...
Threaded connection
Threaded connection