What material are chain rollers generally made of?

Chain rollers are generally made of steel, and the performance of the chain requires high tensile strength and a certain degree of toughness. Chains include four major series, transmission chains, conveyor chains, drag chains, special professional chains, a series of chain links or rings often made of metal, chain-shaped objects used to obstruct traffic passages, chains for mechanical transmission, and chains that can It is divided into short pitch precision roller chain, short pitch precision roller chain, curved plate roller chain for heavy load transmission, chain for cement machinery, plate chain, and high strength chain.