In a process for continuous production of longitudinally welded metal tubing, in which a metal strip is withdrawn from a strip supply, gradually shaped into a tubing with an open longitudinal slit, and the longitudinal slit is sealed by soldering or welding, a lubricant is introduced into the open slit tubing before sealing. It describes how the software is used throughout the process flow, showing its measurement and monitoring power to create results previously unavailable by current available methods. The bottom blade portion has a plurality of widthwise-disposed blade segments that are adjoined and juxtaposed to one another. Moreover, it is possible to leverage database statistical structures such as histograms to estimate the number of qualifying objects without having to examine each object. At least one of the electrodes is made of copper, and barriers for preventing the diffusion of copper into the dielectric are provided between the dielectric and the copper electrode, respectively.