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Main cylinder components The main cylinder is made of 35# forged steel. The main plunger is made of chilled cast iron with a surface hardness of HRC45-48°. The main cylinder is made of tin-copper cast by centrifugal shake casting (guide sleeve), while the main plunger is made of V-shaped oil seal ring and copper sleeve.
| Item | Extruder Container |
| Material | 35# forged steel |
| Diameter | Customize |
| Length | Customize |