The main material used by Jindal Udyog for making cylinder liners is cast iron. This is due to the presence of graphite which acts as a lubricant. Furthermore cast iron is also porous and provides excellent damping properties. The cylinder liners are manufactured by a process called centrifugal casting. The raw material is taken directly from the blast furnace. 

The material used for making cylinder liners must serve multiple purposes and cast iron alone cannot fulfill them, hence cast iron is mixed with some other elements to form an alloy that can be used to make cylinder liners.