Large Single screw and barrel, Dia300x8700mm screw and barrel for extruder machine Single screw and barrel for extruder machinescrew size: dia20-500mmmax. length: 15m TECHNICAL ... -0.1mm wear-proof, corrosion-proof, heatproof, high-pressure proof and high-speed proofSuitable plastic material: PP,PE,ABS,AS,PS ...