… Other refractory ceramic goods (for example, retorts, crucibles, muffles, nozzles, plugs, supports, cupels, tubes, …
Explanatory notes
… - Other refractory ceramic goods (for example, retorts, crucibles, muffles, nozzles, plugs, supports, cupels, tubes, … stands for crucibles; ingot moulds; slide gates, rollers, blanks, forming tools, and pots; etc. (2) Tubing, piping … carbon species such as graphite, amorphous carbon (carbon black) and organic carbon (pitch, tar or resin). …