PE Film Blowing Machine,rotary die head film blowing machine,double rewinding film extruder,extruding machine.. 3FM3500-I THREE-LAYER COEXTRUSION ... Wave form screw rodd, material 38CrMoALA Nitrogen treatment1.2 Machine cana, Aperture 120b, material 38CrMoALA slack quench. Nitrogen ... treatment1.3 It is water-cooling that machine can feed part forces,Transitional part , measure part , ...