... CTSE65/133Extruder 1.use bimetal screw and barrel 2.working life guarantee 2-3 years. CTSE65/133 Twin Screw ExtruderTwin Screw Extruder Main Technical Parameter ... elements use the world brand ,such as Schneider, Yaskawa, Simens,Omron, ABS, etc...---Material of screw and barrel: 38CrMoAlA Azotizing on surface ... and long-time life , easy to handle.. CTSE65/133 Twin Screw Extruder