The purpose of pre-loading a shouldered connection is to lock the total length of the threaded helix load flank surfaces together so that it will not loosen and cause premature fatigue failure. Actual pin stretch measurement has proven to be much more reliable than circumferential displacement in achieving proper connection make-up and extended work cycle life.   A precision linear measurement device is used to directly measure pin advancement into the coupling with absolute accuracy.  This ensures proper pin shoulder to coupling end face contact pressure and proper pin neck pre-load stretch.

With our system, your rods are delivered to location with precision-installed couplings.  This ensures the torsional forces of the field end makeup are induced into one pin shoulder and one thread helix eliminating the shared-torque phenomenon of double-ended makeups.  This provides a much better opportunity for a proper single-ended rig site makeup. An additional benefit is the reduction of crew labor saving valuable rig time, typically two to three hours running time on a 6500 ft. string.

Feel free to give us a call and we would be more than happy to give you a demonstration at our facility.