To dissolve such problem as to be a factor for obstructing high productivity and high quality of a cast slab by giving flowing in a mold the delicate effect caused by a little deviation of thickness of an immersion nozzle for continuous casting. 連続鋳造用浸漬ノズルの肉厚の僅かな偏差がモールド内の流れに微妙な影響を与え、鋳片の高能率生産や高品質を阻害する要因となっている。 - 特許庁