screw and barrel for film blowing machine pp, pe and recycling . it's a good design ... co.,ltd is a factory specialized in making screw barrel, filter, mould, gearbox and recycling machine. Founded in 1988, Yumin ... roughness: Ra 0.4umStreightness of screw: 0.015mUsed for granulation,PP, PE, PA, PC, ABS,AS etcWe can manufacture ... ’s requirement screw barrel for film blowing machine pp pe and recycling