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