plastic extruder machine parallel twin-screw and barrel 1,Cr,Si,Ni,Co,Fe,Mo,V ingredient 2,Centrifugal casting plastic extruder machine parallel twin-screw and barrel Specification 1. Alloy ingredients: Cr . Si. Ni. Co. Fe. Mo. V 2. High quality base material 3. Assortment: Cobalt-base alloy barrel Nickel-base alloy barrel Iron-base alloy barrel 4. Material: High quality alloy powder of Stellite ...