... alloy layer 4,longer lifetime Tairong Machiney Extruder screw/extruder spare parts convenient interchangeability by agile combination.fulfill ... melt pumps, screw changers, gearboxes, pelletizers andside feeders PRODUCT LIST(EXTRUDER) 1) WENGERX-185HEAD , SLEEVE , SCREW , SHEARLOCKMAIN SHAFT ... ALMEX DISK PLATE , LINER , SCREW , HEAD SCREW MIXING PIN , BUSH , SEAT , DRIVE SHAFT MAIN SHAFT , COMPRESSION ...