... Quality,Good Price 4.ISO 9001:2000 Double-Pipe Extrusion Line(Double-Pipe Production)PVC Double-Pipe Extrusion LineFeatures and Application: The ... for SJZ65/132 conical twin-screw extruder, match with double tube sheet control stainless steel sprinkler stenters, avoid a ... flexible eshoo, let you enjoy separately control both benefits, double tube extrusion diameter from 20 - 63, can make full ...