conical double screw extruder 1)CE&ISO9001 2)high extrudion speed 3)long service ... SJSZ51 CONICAL DOUBLE SCREW EXTRUDERSJSZ series conical twin screw stem extruder is composed of barrel screw, gear transmission system, measurable feeding, vacuum dererating, heating, cooling and ... pipes, plates, sheets, film, profiles, and granules etc. SJSZ51 conical double screw extruder