* Name: Conical Twin Screw & Barrel

* Item: FG-503

1) Material: 38CrMoAl A Nitriding treatment, Surface hardness: HV≥900 Nitriding depth: 0. 5-0. 8mm 2) Base material: 38CrMoAI A, Special alloy is welded on the flight of screw , prolong life of screw. 3) Easy wearing parts of barrel made from anti-wear alloy can be improved abrasion performance