Steel sector machinery-ERW tube and profile mills


ERW (Electrical Resistance Welded) tubes are longitudinally welded steel tubes for use for water, oil, gas conveying or for structural purposes.
Steel profiles are also manufactured by the same process.
Starting from slitted steel rolls of different width the rolls are first unwinded, then partially accumulated in accumulators, formed between rolls (roll forming), electrically welded, calibrated, cut to length generally to 6 m. After some finishing operations the tubes are stacked and packed.