... screwbarrel/screwbarrel for blowing bottle/single screw and barrel for ... screw barrel type:1. injection screw barrel, injection Molding screw barrel,screw tips/screw nozzle,2. single screw barrel3. Twin screw barrel4. Twin Conical screw ... screw barrel for blowing molding machine 1, Conical twin screw extruder is special equipment for all kinds of PVC powder extruder;2, The conical double screw ...