I-zirconium core, esetyenziselwa i-tundish nozzle.
Iimpawu eziphambili:
1. Ukumelana nokuthotywa okuhle, akukho kwandiso kwedayamitha ecacileyo, ubomi benkonzo ende, akukho mpompoza utenxa, into yokusasazwa;
2. Ukusebenza komothuko we-Thermal kulungile, ukusebenza kokuchasana nokudubula kuhle kakhulu;