Refractory construction materials, not of metal, in the nature of tundish flow modifiers, namely, dams, weirs, baffles, impact pads, impact bowls, and starter tubes; refractory construction materials, not of metal, in the nature of tundish gas purging devices, namely, plugs, slabs, blocks, and diffusers

'baffl':17 'block':42 'bowl':21 'construct':2,26 'dam':15 'devic':38 'diffus':44 'flow':12 'gas':36 'impact':18,20 'materi':3,27 'metal':6,30 'modifi':13 'name':14,39 'natur':9,33 'pad':19 'plug':40 'purg':37 'refractori':1,25 'slab':41 'starter':23 'tube':24 'tundish':11,35 'weir':16

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