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This product passed the inspection of National Testing Center for Supervising the Quality of Refractory Materiales. It accords with the national JC414-91 standard. High temperature resistant, shock resistant, counter bending. Providing manufacturers with stable and durable firing environment circumstance.
Item | Unit | OK969 | OK989 |
Color of mark | Yellow | Red | |
Max.Service Temp. | .C | 1220 | 1350 |
AL2O3 Content | % | >72 | >81 |
Rate of Water Absorption | % | <11 | <8.5 |
Anti-bending strength | Mpa | >40 | >51 |
Thermal Shock Resistance | Excellent | Excellent | |
Refractory Degree | .C | >1700 | >1800 |
Diameter(mm) | Length(mm) |
65-68 | 3000-5000 |
60 | 2700-5000 |
55 | 2700-5000 |
50 | 2400-4600 |
45 | 2200-3800 |
42 | 2200-3800 |
40 | 2000-3500 |
36 | 2000-3200 |
35 | 1800-3100 |
33.7 | 1800-3100 |
32 | 1800-3100 |
25-31 | 1600-3100 |
Ceramic roller for kiln