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20-110mm Sj-65/33 High Speed Single Screw Single/Two/Three Layers PE/PPR Pipe Production Line, Find Details and Price about PE/PPR Pipe Making Machine PE/PPR Pipe Extrusion Line from 20-110mm Sj-65/33 High Speed Single Screw Single/Two/Three Layers PE/PPR Pipe Production Line - Zhangjiagang Beierman Machinery Co., Ltd.