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