... life, wear resistance PET bottle blown machinery screwbarrel/screwbarrel for blowing bottle/single screw and barrel for PET bottlemachine Specification:45/90 ... InspectionAs the screw and barrel are the important parts for plastic extruders and injection molding machine,they affect the ... of extruder screw barrel and injection molding screw barrel for Haitian,Demag,Engle,Nigrobossi,KMD,NPM,BOY,HUSKY, ...