Lab Twin Screw Extruder Technical Parameters Screw diameter Ø35.5mm Screw L/D ratio 36:1 Max. rotating speed 1500rpm Max. output 40kg/h For more details about this lab twin screw extruder, please feel free to email us. Harden Industries also provide other lab used plastic extrusion matchines and downstream equipments to produce pelletes, film, pipe, sheet, and profile.