ART.130 - Tube ends and longitudinal grooving - clockwise /anticlockwise clamp rotation - Ømin. 20 ÷ Ømax. 145 mm - st714 ART.130 - Tube ends and longitudinal grooving - clockwise /anticlockwise clamp rotation - Ømin. 20 ÷ Ømax. 145 mm - st715