... . Pressure, 8ton 2. Punch distance, 100mm 3. Riveting distance, 6mm Pneumatic Clinching Machine 1. Pressure, 8ton2. Punch distance, 100mm3. Riveting distance, 6mm4. Air source 2 ... :spiral tube forming machine,flexible duct forming machine,auto roof forming machine,riveting machine,Pittsburgh seam lock machine.Hydraulic section steel bending machine,metal sheet flange ...