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