... for extruder, based on 38CrMoAlA. conical twin screw and barrel for plastic extruder, granulator or pelletizer Ruian Yumin machine screw ... for our customers.size: 35/75, 45/90, 45/100, 50/105, 55/110, 60/125, 80/143, 80/156, ... 92/188, 95/188Material: 38CrMoAlA high quality alloy steelTechnology: nitriding treatment, alloy coating spraying, heating treatment, screw fully hardeningDiameter: Φ45 ...