... .One convolution/1secon We make all kinds of hose making machines including the following:1. Elastomer Annular Hose Forming Machine: ... layers: single or double layersType of the bellows: annular bellowsApplications: for auto exhaust bellows, flexible metal hoses, and expansion jointsControl: ... 70X20.80X20.90X21.0X2The parts will go with the machines: The molds for DN50,65,80,100,125, 150,200,250,300mm5 ...