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Parts used to provide abrasion resistance for linings of bunkers, coal chutes and pipes, namely, formed plates and pipes made of rubber, rubber substitutes or plastics and mixtures thereof with mineral materials or cements

Anti-abrasive products, namely, stones, plates, shaped parts, hollow bodies and pipes made of meltable and castable mineral materials, namely, basalt, granite alumina acetate, carborundum, basalt furnace slag, slag of copper and mixtures, lava and silicates and other materials; flat and curved cast alloyed iron plates and decoplates of fused cased basalt used for refractory furnace linings

Making and installing parts having linings or cladding that resist abrasive abrasion and impact abrasion and improve slidability and protect against corrosion and wear in refractory furnaces and hollow bodies