… muffles, nozzles, plugs, supports, cupels, tubes, pipes, sheaths, rods and slide gates), other than those of …
Explanatory notes
… muffles, nozzles, plugs, supports, cupels, tubes, pipes, sheaths, rods and slide gates), other than those of … blanks, forming tools, and pots; etc. (2) Tubing, piping (including runways in the form of half-cylinders) and …