... products: mainly used for machining high speed steel, cast iron and so on. Vitrified products seriesVitrified products have ... ,etcVitrified CBN products: Mainly used for machining cast iron (allow cast iron ,chilled cast iron ,nodular cast iron ,etc),steel(45#,55#,20Cr,etc). Metal ... :Mainly used for machining metallic material such as chilled cast iron ,founded alloy steel ,titanium alloy and so on . ...