The AL and BL series Mast Leaf Chains meet ANSI B29.8 and ISO 4347 standards.
There are A- and B-type chains. Both AL6 Series and BL6 Series have the same chain pitch, but they differ in Plate thickness and Pin Diameter. These steel chains have a very simple construction: link plates and pins. The two right hand digits in a chain number indicate the lacing of the chain. Number(s) to the left indicate pitch in 1/8" units. For exact chain specifications, click
here.