ceramic refractory workpieces; namely, bricks, plates, bottoms and ceilings of furnaces, tubes, immersion pipes, plugs, tuyeres, and well nozzles [ ; tapping spouts, spreader conduits for metallurgical purposes; ceramic refractory workpieces for the construction of intermediate walls in metallurgical vessels ]

'bottom':7 'brick':5 'ceil':9 'ceram':1,27 'conduit':23 'construct':32 'furnac':11 'immers':13 'intermedi':34 'metallurg':25,37 'name':4 'nozzl':19 'pipe':14 'plate':6 'plug':15 'purpos':26 'refractori':2,28 'spout':21 'spreader':22 'tap':20 'tube':12 'tuyer':16 'vessel':38 'wall':35 'well':18 'workpiec':3,29

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