Insulating riser sleeve
To prevent shrinkage defect.
To decrease slag inclusion and air hole.
The size of insulating riser sleeve can be customized.
| Circular insulating riser sleeve |
 |
 |
| Square insulating riser sleeve |
 |
 |
| Sheet-shaped insulating riser sleeve |
 |
 |
| Bendable insulating riser sleeve |
 |
 |