A regular wear resistant conveyor chain is made from quenched and tempered alloy steel. But this made from specially selected alloy steel for the unique combination of demands from the application. Dong Bo has developed a special solution after a lot of experiment.For example, components (bush, pin, roller) are ideally combined in point of dimensions, clearance and hardness. This concept enable that the chain can extend its life up to 2times that of regular wear resistant conveyor chains.