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  Conical (parallel) twin screw & barrel  
詳細(xì)說(shuō)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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