... ,plastic machine,film machine,machine,pe film machine film Blowing Production Line,china film machine,film blowing machine,plastic machine,film machine ... rotatory die head,machine tube is adopted 38CrMoAl,having the best hardness and corrosion-resisting performance after nitrogen treatment and precision ... -0.10 mmFilm Width50-1200 mmWeight2-4.5T Film Blowing Production Line