Laini yii n pese afọwọṣe ati ṣiṣe iho paipu PVC laifọwọyi pẹlu awọn iho “U” tabi “R”.Pupọ julọ o jẹ atẹle laini extrusion, ti o baamu pẹlu awọn ẹrọ fifọ tabi awọn ẹrọ fifọ.O tun le ṣiṣẹ lọtọ.Ẹrọ agogo wa ni awọn adiro alapapo meji.Ṣaaju ki o to agogo, awọn paipu yoo gbona ni adiro alapapo.Ati nigbati awọn paipu fifiranṣẹ si belling, miiran paipu yoo wa ni rán si alapapo.Nitorinaa, laini naa ni iṣelọpọ giga ati iyara iṣẹ iyara.