... quality 2.durable in use Micro spray with unit configuration parameters1, single screw plastic extruder1.1 screwScrew diameter, 50mmScrew length ... depth >0.6 mm, nitriding hardness acuity >=7001.2 Screw barrelScrew tube diameter, 50mmScrew tube material, 38CrMoALAProcessing, nitriding ... power, 1.5 KWThe vacuum tube diameter and ball screw rotationThe vacuum tube diameter and drive power, 0. ...