Da Inglese a Italiano Tecnico/Meccanico Automazione e robotica

please help me finding this term: "seam"
I find it every where in the project I'm making...
Seam traking
Seam location
Welding seam
a sentence for the context: "Seam position and geometry are fed, via the controller, directly to the robot motorised slide system".

The text speeks about the automated robots in car industries.

Thanks