Processes and systems for preparing pipe for machine processing to form pin and box ends for assembly into pipelines or to assemble pipe sections in pipelines using mechanical press-fit pipe joints in which hydraulic pressure and linear displacement parameters, respectively P and L, are fully measured and documented during both manufacturing and assembly. Installed pipelines include pipeline data monitoring systems coupled to a pipeline data management center for receiving, archiving, and analysis of the data records to aid in administration, operation and management, and troubleshooting of pipelines.