Kudulira Kwathu kwa Zitsulo Zozungulira Kwamphamvu kumagwiritsidwa ntchito kwambiri m'mapulojekiti a HVAC aku Europe, America ndi Middle East a nyumba zamalonda, maofesi ndi mahotela. Wopangidwa ndi-wotentha kwambiri-mzere wachitsulo wa dip galvanized ndi ukadaulo wa automatic spiral forming, wopangidwa ndi makoma osalala komanso osasunthika ndi mphepo, kuwongolera mpweya wabwino komanso kuchepetsa kugwiritsa ntchito mphamvu.
Kapangidwe ka spiral occlusal kumatsimikizira kulimba kwa mpweya wabwino popanda kutulutsa mpweya. Wokhuthala ndi wofanana ndi malata okhala ndi mankhwala oletsa kuwononga- corrosion passivation amazindikira dzimbiri ndi{2}}kutentha kwambiri. Zosavuta kuyeretsa ndi kukonza, malondawo amagwirizana kwathunthu ndi miyezo yamakampani a HVAC ku Europe ndi ku America ndipo amathandizira-zosintha mwamakonda osiyanasiyana, kukhala chisankho chodalirika-mapulojekiti apamwamba olowera kunja kwa nyanja.
Lumikizanani nafe kuti mutumize katundu wambiri komanso ntchito zosinthidwa mwamakonda za spiral ducting.
