TIN Screw Barrel screw barrel, bimetallic screw barrel, TIN screw barrel, high errosion screw barrel, TIN nozzle tips , high wearing resistent screw barrel, TIN screw barrel components Distributor, Collar, Screw Cap& Washer. Barrel assembly parts End cap, Flange, Adaptor, Cooling Ring, External& Internal Spring Controlled Nozzle for Nylon.