1, single screw for injection modling machine. 2, 38CrMoAlA base material; 3, bimetallic powder treatment; With the perfect design, our injection molding screw barrel ... is able to realize the high plasticizing capacity and molding function of your machine.Specifications: Base ... /mScrew15 ~ 350mm≤ 8000mm Ra0.4μm 0.015mm/m alloy injection machine single screw