English to Spanish Tech/Engineering Metallurgy / Casting soldadura

The main concern of key international customers is likely to be the manual control of the production equipment, and in particular the lack of automated gap control and coil edge offset control. This is particularly important in view of inherent concerns associated with the single-step helical pipe welding facility, which does not allow for controls after tack welding, as in a 2-stage mill.

¿Podría ser la "soldadura helicoidal en una fase"?