... injection molder machine screw and barrel injection molder machine screw barrel 38 CrMoAlASize: screw diameter:Φ20-Φ500mm Maximum screw length:10000mm ... treatment, alloy coating spraying, heating treatment, screw fully hardening,specifications:30g-25000g screwDepth of nitrition ... can manufacture various kinds of screw barrels according to the customers requirement injection moulder machine screw