Qulqulka dhululubada ayaa ah geedi socod muhiim ah oo ku saabsan soo saarista qaybaha saxda ah, gaar ahaan baabuurta, hawada, iyo warshadaha injineerinka. Hawshan, giraangiraha qoorta loo yaqaan 'cylindrical giraangiraha'



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Giraangiraha cirifka ah ee cylindrical
* Dufcaddii wax ku ool ah ee shiidan
* Wareegtada sare iyo dhululdigga shaqada iyo isku-darka wanaagsan ee cabbirka
* Dusha sare oo dhameystiran dhameystiran kadib shiil ganaax
* Waxaa loo isticmaalay shiilid adag, shiidan oo shiilan iyo shiidan
Faa'iidooyinka mid ka mid ah giraangiraha shiidista dhululubo waa is-kala-baxa. Waxaa loo isticmaali karaa in lagu shido waxyaabo fara badan oo kala duwan, oo ay ku jiraan birta, aluminium, dhoobada, iyo composites. Waxaa sidoo kale loo isticmaali karaa labadaba codsiyada shiidan oo dhammeeya, iyo sidoo kale shiidida sagxadaha gudaha iyo dibedda ee shaqada cyrindrical workpi