... various extruding machines 2 38CrMoA1A 3PTA, ion nitride,and more Specifications of this single screw and barrel:diameter: Φ15mm~ Φ250mmlength:300mm~8000mmexternal diameter ... -alloy hardness: 60~70 Product types:almost all kinds of single-screw types can be made. Scope of application:PP, PE ... , PS, EVA, ABS, PVC, APC, PMMA pelletizing, foaming,sheet and plate extruder etc.