Retorts, crucibles, mufflers, nozzles, plugs, supports, cupels, tubes, pipes, sheaths, rods and other refractory ceramic goods, containing > 25 to 50% graphite or other carbon or a mixture thereof (excl. refractory bricks, blocks, tiles)
Izdelki, ognjevarni, keramični, drugi, 25 do 50% grafita ali drugih oblik ogljika ali mešanic teh snovi