... .high quality 2.durable in use Micro spray with unit configuration parameters1, single screw plastic extruder1.1 ... 1Screw speed (Max) , 80r/minScrew forms, wave mixing with stemScrew material, 380rMoALAProcessing, nitriding processNitriding depth >0.6 mm, nitriding ... acuity >=7001.2 Screw barrelScrew tube diameter, 50mmScrew tube material, 38CrMoALAProcessing, nitriding processNitriding depth >0.6 mm, ...