Corrtechsilicon iron anode are made by Chill Casting in metal mould. Theanodes have more high density, more compact crystal structureand  low consumption rate, thus have longer life. we producethis kind of anodes according to ASTM A518-86(grade 3) standard.they are made by Chill Cast technology, and have much higherperformance and better quality than normal sand mouldcasting.