This conveying chain is for special use in printing or coating drying oven. The chain is configured with single row of roller link at a pitch of 1 inch (25.4mm), with graphite lined pulleys on the outside to reduce friction between conveying chain and guide rail in the drying oven, extending its service life and providing easy replacement. The chain may operate smoothly and steadily without lubrication. The chain is supplied in different types, such as straight pin type and triangle type. The pulleys lined with graphite are sleeved with powder metallurgic or 45# steel. Liner is selectable with either graphite or iron/copper composite material.