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                  Conical (parallel) twin screw & barrel  
                詳細說明:

                1.Material: 38CrMoAIA
                Nitriding treatment,Surface hardness: HV≥900
                Nitriding depth: 0.5~0.8mm

                2.Base material: 38CrMoAIA,Special alloy is welded on the flight of screw,prolong life of screw.

                3.Easy wearing parts of barrel made form anti-wear ally can be improved abrasion performance.

                 
                 
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