BS 7225-1-1.3:1989 - Classification of refractories. Shaped refractory products - Basic products containing less than 7% carbon
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This part of BS 7225 specifies the classification system for shaped basic refractory products that contain less than 7% carbon by weight.
These are typically used in high-temperature industrial processes, particularly where chemical resistance, thermal stability, and mechanical strength are required — such as in steelmaking, non-ferrous metallurgy, cement, and lime kilns.