SUBMERGED NOZZLE FOR STEEL CASTING

A submerged nozzle for use in steel casting includes a nozzle body, a nozzle passage formed through the nozzle body so as to extend from an upper end of the nozzle body to a lower portion of the nozzle body in its longitudinal direction, a plurality of discharge ports formed in the lower portion of the nozzle body so as to face outwardly, and a projecting part provided around the nozzle body at an upper end of the discharge ports and having a slanting surface which is located from the upper end of the discharge ports and inclined upwardly in a positive direction. The discharge ports are connected to the nozzle passage. The projecting part has a thickness (A) ranging from 5 mm to 50 mm, a height (B) ranging from 10 mm to 200 mm, a slanting angle (C) ranging from 5 degrees to 60 degrees.