ASME B29-200 pdf download WELDED-STEEL-TYPE MILL CHAINS, WELDED-STEEL-TYPE DRAG CHAINS, ATTACHMENTS, AND SPROCKET TEETH Incorporating ASME B29.16M and ASME B29.18M 1 DEFINITION welded-steel-type mill chains: a series of identical welded offset links having barrels to contact the sprocket teeth, and pins which articulate in the barrels of the links. Pins are fixed in the sidebar pitch holes by either press...