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Wear-resistant, corrosion-resistant, abrasion-resistant, adhesion-resistant, impact-resistant, rot-resistant, acid-resistant, moisture-resistant, heat-resistant and slide-promoting building materials (non-metallic), in particular boards, moulded parts, hollow parts, pipes, pipe parts, mastics; Building materials, boards, moulded parts, hollow parts, pipes, pipe parts (non-metallic), in particular consisting of or coated with minerals, cement, ceramic, artificial resins or plastics, including in combination with other materials, in particular for lining and reinforcing bunkers, silos, pipelines, conveyor chutes and channels, hoppers, mixers and other storage, conveying and processing equipment and installations for pourable or conveyable bulk goods; Clay (Potters' -) [raw material]; Ceramic articles for construction purposes; Cement; Boards, pipes and moulded parts consisting of mixtures of minerals with epoxy resins and/or cement in the form of linings and cladding for protecting against wear; Smeltable and pourable minerals, in particular basalt, granite, corundum, blast furnace slag, copper slag and mixtures of igneous rock with silicates, and wear-resistant and abrasion-resistant building materials and elements, in particular stones, boards, moulded parts, hollow parts and pipes made therefrom, including in combination with other materials