FIRE STOPPING COLLAR,STEEL PIPE COLLAR TO STOP FIRE ,FIRE STOP PIPE COLLAR,INTUMESCENT COLLAR
| ITEM | TECHNICAL STANDARD | TEST RESULT | |
| FIRE RESISTENCE | ≥180min | 180min | |
| PLUGGING TIME | ≤20min | 17min | |
| Expansive properties of flame-retardant dilated core | Unsoaked | Expansion volume≥10ml/g | 25ml/g |
| After immersing 48h in water | 25ml/g | ||
| After immersing 48h in cement slurry | 25ml/g | ||