Abstract: Based on analysis of the problems related to the equipment and dip-galvanization operation of the currently used rotary-rake type and screw type steel tube hot-dip galvanization lines， a new full-automatic， above-ground steel tube hot-dip galvanization line has been developed as a result of comprehensively adoption of the-state-of-arts techniques in this field． Described in the paper are the process flow ，equipment layout and structural features of the said production line.