... ,various semi-finished part of tires etc.2.Construction A extruder mainly consists of motor,gearbox,feeding device,barrel,screw,head ... horizontal,its gears are carburized and quenched on surface (hardened gear surface),with processing accuracy of 6-grade,the gearbox has ... ±1.5oC.The quantity of loops depends upon extruder size and process requirements.Extruder head Various heads such as those for pipe ...