... , low noise, long operation time. 2. transmission gearbox for single screw extruder machine Main features:1.The material of gearbox is ... water coil we can make any specification of extruder screw barrel and injection screw barrel for Haitian, Demag, Engle, Nigro bossi, ... Mitsubishi and etc. We also can supply all types of screw and barrel according to your different requirements. Our gearbox can ...