... PVC Corrugated tube extrusion machine 1,chain moulds 2,tube extrusion line 3,through a thread for the pipe 4,For PE/PVC ... PE/PVC ... : used to produce the PP PE or PVC corrugated hose .The process of the plastic ... .The main information about the line :1,chain moulds 2,horizontal configuration3,blowing forming4,Frequency control ...