... steel 38CrMoAlA by special treatment. Assembled together, they will become twin screw which are essential and key part of extruders for ... , LINER , SCREW , HEAD SCREW MIXING PIN , BUSH , SEAT , DRIVE SHAFT MAIN SHAFT , COMPRESSION HOUSING WEAR SLEEVE , SLIDING PIECE3) MATADORFP 34WEAR CONE , BARREL ... /C-10HEAD , SLEEVE , SCREW , SHEARLOCK High quality and Standard Twin Screw Extruder Screw Element