Ya dace da walda na bakin ciki na simintin walda na simintin ƙarfe da saman injina, kamar kawunan silinda, tubalan injunan simintin ƙarfe mai launin toka mai mahimmanci, akwatunan kaya, da Kayan aikin injin da sauri.
Shi ne dace da waldi na high-ƙarfi launin toka baƙin ƙarfe da nodular simintin ƙarfe, kamar Silinda, engine block, gear akwatin, da dai sauransu ..