... pressure: 3.5-4.5MPa 4). Operation mode: manual/automatic 2. Helical Hose Forming Machine: 1). Diameter: DN8-DN50mm 2). Thickness: 0 ... -1.6*2Type of the bellows: annular bellowsControl: PLC control, manual or automatic controlStraight tube length: ≤1800mmExpanding medium: emulsified liquidForming speed ... , 300,350,400,450,500,550,600mm Hydraulic Metal Hose Making Machine