ASME B29.20 pdf download WELDED-STEEL-TYPE MILLCHAINS,WELDED-STEEL-TYPEDRAG CHAINS, ATTACHMENTS, AND SPROCKET TEETH lImcorporating ASME B29.16M and A8ME B29.18M 1 DEFINITION welded-steel-type mill chains: a series of identicalwelded offset links having barrels to contact the sprocketteeth，and pins which articulate in the barrels of thelinks.Pins are fixed in the sidebar pitch holes by eitherpress fits and/or mechanical locks，such as flats，toprevent rotation of the...