... distance,20mm Round duct elbow rivet machine ATM-09 1.Pressure,8ton2.Punch Distance ,40mm3.Riveting distance,20mm4.Hydraulic pressure,100 KGF5.Riveting ... 8x5 mm6.Max thickness of sheet material,2mm+2mm7.Power 380v,3 phase, 50hz This machine with rivet moulds,by hydraulic drive only ...