... series of extruders are applied to PVC pipe extrusion line, PVC profile extrusion line, PVC modification pelletizing line, wood plastic ... thermometer, error is ± 1 centi grade, And thermometric unit consists of thermocouples;Water ring exhausting device, vacuum extent: ... series of extruders are applied to PVC pipe extrusion line, PVC profile extrusion line, PVC modification pelletizing line, wood ...