CONICAL DOUBLE SCREW EXTRUDER: 1>used for PVC material 2>PVC ... /105,65/132,80/156,90/188. CONICAL DOUBLE SCREW EXTRUDER: This series of conical double screw extruder is specializing in extruding ... , the extruder ensures consistent speed of material dischaging and extruding. CONICAL DOUBLE SCREW EXTRUDER