Refractory products – Dimensions – Part 3: Basic arch bricks and rectangular bricks for converters and arc furnaces
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 03/01/2017

Refractory materials; basic arch bricks and refractory bricks for oxygen steel-making converters and arc furnaces; dimensions
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 01/01/1988