... Material:stainless steel,steel,iron, alloy ste Steel rack gear,gear rack We can produce all kinds of gears according to ... steel,carbon steel and so on7.Heat treatment:carburizing and quenching,hardening and tempering,highfrequency quenching,and so on.8. ... line12.Holfer 700 gear grinding machine imported from Germany13.Test and detection equipment mainly includes: Gear measurment machines(MM) ...