CHAIN, ROLLER, POWER TRANSMISSION AND CONVEYOR, FLAT LINK PLATES; BASE PITCH, SINGLE AND MULTIPLE STRAND; CONNECTING LINKS AND ATTACHMENT LINKS (SUPERSEDING MIL-STD-421A) (S/S BY ANSI-B29.1-1993)
链条、滚筒、动力传动和输送机、平联板;基节距 单股和多股;连接链环和连接链环(取代MIL-STD-421A)(S/S由ANSI-B29.1-1993提供)