NF T20-169*NF ISO 6791:1986 Carbonaceous materials for the production of aluminium. Pitch for electrodes. Determination of content of quinoleine-insoluble material.
1986NF T20-169*NF ISO 6791:1986 Carbonaceous materials for the production of aluminium. Pitch for electrodes. Determination of content of quinoleine-insoluble material.