Tagulla simintin gyare-gyare nau'i ne na kayan gami da jan ƙarfe wanda ake amfani da su sosai a masana'antar kera injuna, ginin jirgi, masana'antar kera motoci da gine-gine.Mafi mashahuri nau'ikan simintin tagulla ana iya rarraba su azaman Cu-Sn, Cu-Al, Cu-Pb, Cu-Mn.A ƙasa akwai maki gama gari