Screw Barrel

Single screw barrel   1for various extruding machines   2 38CrMoA1A   3PTA, ion nitride,and more       Specifications of this single screw and barrel:  diameter: 15mm~ 250mm  length:300mm~8000mm  external diameter:40mm~400mm  L/D: 10~46     Technical indexes:  38CrMoALA, Nitriding hardness:HV850~1000, Nitriding depth:0.5~0.8mm, surface roughness:Ra0.4um, screw straightness:0.015mm, Chromium plated hardness:>900HV, Chromium layer thickness:0.05-0.10mm, twin-alloy depth:0.8~2.0mm, twin-alloy hardness: 60~70     Product types:  almost all kinds of extruder screw barrel types can be made.     Scope of application:  PP, PE, PS, EVA, ABS, PVC, APC, PMMA pelletizing, foaming,sheet and plate extruder etc.