Abstract: Described in the paper are several different aggregates for steel tube axially transport in tube pro-cessing line,including roller-conveyor,manipulator and hydraulically transporting,pneumatically transporting and servo motorized transporting mechanisms,covering the structures,technical features and applications of these transport mechanisms.In actual application,appropriate transport mechanism needs to be determined in accordance with different productivity and transport accuracy so as to ensure the consistent running of the opera-tion line,thus the output and quality of steel tubes.