... Hydraulic Forming MachineDiameter: DN50-300mmNo. of layers: single or double layersType of the bellows: annular bellowsApplications: for auto exhaust ... -630mmNo. of layers: single or double layersWall thickness: Single layer1.0-3.0mm Double layers:0.8*2-1.6* ... speed:8-28seconds per convolutionMolds and water injection head: DN200,250, 300,350,400,450,500,550,600mm Flexible Metal Tube Making Machine ...