... Punch Distance ,40mm 3.Riveting distance,20mm Riveting Machine 1.Pressure,8ton2.Punch Distance ,40mm3.Riveting distance,20mm4.Hydraulic pressure ... ,100 KGF5.Riveting size square hole 8x5 mm6.Max ... ,flexible duct forming machine,auto roof forming machine,riveting machine,Pittsburgh seam lock machine.Hydraulic section steel ...