Aluminium grating bar ndi yopepuka, yosachita dzimbiri, ndipo imatha kubwezeredwanso. Ndi chiŵerengero cha mphamvu ndi kulemera kosayerekezeka, mankhwalawa ndi abwino kwa mafakitale ndi ntchito zomangamanga. Amapangidwa kuchokera ku ASTM B221, 6063 kapena 6061 alloy kapena zida zina zachitsulo.