giraangiraha duuban waxaa inta badan loo isticmaalaa warshadaha birta si ay u shiiddo taarikada birta dhuuban, taarikada birta dhumucdeedu dhexdhexaad tahay, iyo taageerooyinka duubka kulul iyo qabow. Oo ku haboon shiidi ee taarikada birta kulul- giringiriyey, birta qabow-rogid, taarikada birta silicon, taarikada dhexdhexaad ah oo dhumucdiisuna, shubid joogto ah iyo rogid, iyo duubo processing saxan biraha non-ferrous.