NBN EN 12475-3
NBN EN 12475-3 (Classification of dense shaped refractory products - Part 3: Basic products containing from 7% to 30% residual carbon)· NBN (Belgium) · 55 materials
NBN EN 12475-3 (Classification of dense shaped refractory products - Part 3: Basic products containing from 7% to 30% residual carbon)· NBN (Belgium) · 55 materials