... 38CrMoAlA by special treatment. Assembled together, they will become twin screw which are essential and key part of extruders for ... SCREW , SHEARLOCKC2TXSCREW SHAFT2) EXTRU-TECHE.T.I-925SLEEVE , SCREW , MAIN SHAFTE.T.I-750SLEEVE , SCREW , STEAMLOCK , HEADE.T.I-700SLEEVE , SCREW , STEAMLOCK3) BUHLERDNDJ ... C-10HEAD , SLEEVE , SCREW , SHEARLOCK High quality and Standard Twin Screw Extruder Screw Element