... efficiency single screw extruding machineFeatures:Suitable for all kinds of PE,PP PB ,ABS,PE-X,PP-R,PP-B and other ... ,and sillicon-core pipesSuitable for manufacturingPP.PS,PET sheet materials and platesLength –diameter ratio is 25:1,36:1The screw stem and the machine ... body are both treated with long-period gas nitrzingSuper-silent fan cools the machine bodyFine ...