... , L/D ratio 30c, Configuration 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 , mix ... Adopt three-dimensional triangle steel frame structure7 Film wind-up machine(quantity and modelJQ3500) 7.1,Twice draw gear 7. ...