Leaf leaf chain china chains are designed of interlaced plates held with each other by rivet pins. They are built with the same high amount of precision as our roller chains. Leaf chains are utilized for applications that require strong flexible linkage for transmitting movement or lift. Specially selected steel and unique heat therapy assures high strength and durability. The first amount or numbers in leaf chains identifies the chain pitch, the last two numbers identify the chain’s lacing. New applications should use BL series leaf chains