… pipes, sheaths, rods and slide gates), other than those of siliceous fossil meals or of similar siliceous earths. …
Explanatory notes
… pipes, sheaths, rods and slide gates), other than those of siliceous fossil meals or of similar siliceous earths (+). … vessels, crucibles, cupels and similar articles for industrial or laboratory use, muffles, nozzles, plugs, burner jets and similar parts …