The VA808 roller has excellent performance in critical thermal shock resistance, with working temperature upto 1370°C, it is specially used in the front kiln for producing normal glazed tile with high cost effective.
| VA808 CHEMICAL & PHYSICAL CHARACTERISTICS |
| ITEMS | VA808 (SUPER HIGH-TEMP.) |
| MAX. SERVICE TEMPERATURE | 1370℃ |
| REFRACTORY DEGREE | 1750~1800℃ |
| RATE OF WATER ABSORPTION | 4.0~6.0% |
| ANTI-BENDING STRENGTH | 62~74MPa |
| THERMAL SHOCK RESISTANCE | ★★★★★ |
| Al2O3 CONTENT | 76~78% |
| ZrO2 CONTENT | 4.0~6.0% |
| SiC CONTENT | 0 |
| METAL SI CONTENT | 0 |
| STANDARD DIMENSIONS |
| DIAMETERS (mm) | LENGTH (mm) | DIAMETERS (mm) | LENGTH (mm) |
| 65~80 | 3000 ~ 5300 | 40 | 2000 ~ 3500 |
| 60 | 2700 ~ 5000 | 36 | 2000 ~ 3300 |
| 55 | 2700 ~ 5000 | 35 | 2000 ~ 3200 |
| 52 | 2400 ~ 5000 | 33.7 | 1800 ~ 3100 |
| 50 | 2400 ~ 4600 | 32 | 1800 ~ 3100 |
| 45 | 2200 ~ 3800 | 20-31 | 1600 ~ 3100 |
| 42 | 2200 ~ 3800 | 12-19 | 1200 ~ 2800 |
