can continuously extrude various standards of PVC,LDPE and HDPE thermoplastic corrugated pipes. The set,SJ65x25 Extruder,moulder ... of corrugated pipe, molds of pipe parison, wind-cooling unit, counter and winder from a complete set, can continuously extrude various ... standards of PVC,LDPE and HDPE thermoplastic corrugated pipes. ·The set is a new- ...