The automatic steel pipe hot dip galvanizing equipment is an automatically immerses the finished black pipe after surface treatment, and plating a corrosion-resistant and smooth zinc layer on the inner and outer surface of the steel pipe. The main equipment includes drying furnace, heating furnace, galvanizing machine, steel pipe lead-out machine, lead-up mechanism, lead-up roller table, transverse-move mechanism, steam and air combined internal blower (or guide rod internal blower), leveling mechanism, cooling water tank, spray roller table, typing roller table, blue ribbon machine, electrical equipment, etc.