https://hyrefr.com/product/ladle-shroud/
The major roles of the Ladle Shroud :

To protect the steel stream from re-oxidation between the ladle and tundish
To introduce the steel into the tundish with minimum risk of tundish powder entrapment
These roles are essential for most of the steel grades and steel applications.
HYRE teams combine their respective skills and experience in material selection and refractory design to offer a wide range of custom-tailored Ladle Shrouds and Gaskets that can fit each steel producer’s needs.