To increase the strength of extrusion cylinder for large extruder, we need use multi-shrinking structure.
大型挤压机用圆挤压筒一般都采用组合式结构以提高其强度。
Extruder: it has adopted the famous brand speed-regulating systems, shielding double-pole mixed PP-R specialized screw and the cylinder which has channels in it.
挤出机：采用品牌调速系统，屏障型两极混炼pp - R专用螺杆，开槽机筒。
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