Agasanduku ka Galfan Hexagonal nagasanduku ka gabion gakozwe mubikoresho bya galfan.Itandukaniro ryayo nyamukuru kurisanzwe ni imiterere yimiti (5% aluminium na 95% zinc).5% idasanzwe Alu ituma ikora neza muri kamere yo kurwanya ingese.
Buri gihe ikoreshwa mugace kirwa kugirango irwanye isuri ituruka mumazi yinyanja.Ariko kubera igiciro cyayo kinini, cyatoranijwe nabakiriya batari bake.