... layers: single or double layersType of the bellows: annular bellowsApplications: for auto exhaust bellows, flexible metal hoses, and expansion jointsControl: ... 90X21.0X2The parts will go with the machines: The molds for DN50,65,80,100,125, 150,200,250,300mm5. ... speed:8-28seconds per convolutionMolds and water injection head: DN200,250, 300,350,400,450,500,550,600mm Hydraulic Metal Hose Making Machine