Datang imapanga Extruded Fin Tubes yomwe imapangidwa ndi njira yozizira yozungulira.The Extruded Fin imapangidwa kuchokera ku chubu chakunja cha aluminiyamu chokhala ndi khoma lalikulu, lomwe limagwirizanitsidwa ndi chubu chamkati.Machubu awiriwa amakankhidwa kupyola m'mabwalo atatu okhala ndi zimbale zozungulira zomwe zimafinya kapena kutulutsa zipsepse za aluminiyamu m'mwamba ndi kunja kwa zinthu za muff mozungulira mu opareshoni imodzi.Njira ya extrusion imalimbitsa zipsepse ndikuletsa kulumikizana kwachitsulo kosiyanasiyana pamizu ya zipsepse.Kunja komwe kumawonekera ndi aluminiyamu ndipo palibe mipata pakati pa zipsepse zoyandikana pomwe chinyezi chimatha kulowa.Izi zimatsimikizira kuchita bwino komwe kumayembekezereka mukamagwiritsa ntchito malo otalikirapo pakutengera kutentha.Panthawi yomaliza, chomangira cholimba chimapangidwa pakati pa chubu chakunja cha aluminiyamu ndi chubu chamkati chachitsulo chofunikira.