... 76g/cm3 Shaped Refractory Bricks/BlocksZibo Shunzhou International Trading Co., ltd is a specialized manufacturer and supplier of refractory, ... (%)2.5Refractoriness (SK)34Refractoriness under load, 0.2MPa, Ta, ((°C)1350Porosity (%19-23Bulk density (g/cm³)2. ... ItemStandardAI2O3(%)50Fe2O3 (%)2Refractoriness (SK)36Refractoriness under load, 0.2MPa, Ta, ((°C)1450Porosity (%20-24Bulk density (g/cm³)2. ...