Iyo spiral corrugated pombi chigadzirwa chine yakasarudzika spiral chimiro, iyo pombi zvinhu mechanical performance yakanaka, iyo inomanikidza simba, pombi yakavigwa pasi pe deformation, yemukati spiral yunifomu tambo yakatenderedza kutonhora kunyatsoshanda uye zvino chengetedza kuchengetedza kwetambo.