Leaf leaf chain china chains are built of interlaced plates held jointly simply by rivet pins. They are designed with the same high degree of precision as our roller chains. Leaf chains are utilized for applications that want strong flexible linkage for transmitting motion or lift. Specially selected steel and exclusive heat treatment assures high durability and strength. The first quantity or figures in leaf chains identifies the chain pitch, the last two quantities recognize the chain’s lacing. New applications should use BL series leaf chains