joon[kontakt]keevitus pidevpöörlevate rullelektroodidega keevitusvoolu rakendamise ajalise intervalliga, mis tagab osaliselt kattuvate keevispunktide jada (vt joonkontaktkeevitus; vrd punktkeevitus rullidega, katkendjoonkeevitus), resistance seam welding (RSEW) in which the metal joins as passes through the electrodes at a constant roller speed; it produces a uniform overlapping weld as the workpiece remains under constant pressure (see: resistance seam welding; compare: roll spot welding, intermittent motion welding)