
Refractory Tundish Upper Nozzle for Flow Control. High Purity Zirconia Insert: Made of high-purity zirconia formed by high-pressure molding and high-temperature sintering. Superior Corrosion Resistance: Corrosion resistance and thermal shock stability reach domestic advanced levels. Extended Casting Sequence: Ultra-high density LKZN-M or LKZN-H insert provides excellent erosion resistance. Precision Ground Surface: Lower surface ground to exacting tolerances for maximum surface contact. Versatile Material Options: Available in Alumina Block, Zirconia, and composite designs for various needs. Seaworthy Packaging: International standard wooden case packing suitable for export. Wide Application Scope: Suitable for continuous casting of billets, blooms, rectangular billets, and small slabs.