Detailed Product Description Refractory nozzle is made of zirconia and imported natural zirkite, ... different steel-making condition and requirements.Specific Property:It is refractory, well thermal shock resistant, anti-eroding, anti-erosive, changeless ... casting it is mainly used in given-diameter refractory nozzle,intermediary's refractory nozzle,refractory nozzle Quick-Change Machine's nozzle and ...