… 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, … tools, and pots; etc. (2) Tubing, piping (including runways in the form of half-cylinders) and angles, bends and … fittings, even if intended for use as permanent fixtures in construction work. The heading does not , however, include …