2 4 The new solid state High Frequency welding lines are functionally integrated into the production flow with the aim of standardizing a fully-automated production process up to loading onto trucks. The new-generation slitter, capable of processing coils up to 2000 mm wide, feeds the strips to the welding lines and the tubes, automatically packed in-line, are transferred by self-driving shuttles to the new automatic vertical warehouse. The storage system and bundle preparation for shipment are fully automatic and in 24/7 operation. tubi con saldatura ad Alta Frequenza (HF) Frequency (HF) welded tube production