7
Wear-resistant, corrosion-resistant, abrasion-resistant, adhesion-resistant, impact-resistant, rot-resistant, acid-resistant, moisture-resistant, heat-resistant and slide-promoting parts for machines and installations, in particular boards, moulded parts, hollow parts, pipes, pipe parts; Machine and installation parts, in particular panels, moulded parts, hollow parts, pipes, pipe parts, in particular of plastic, slide-promoting plastic, thermoplastic or slide-promoting material, 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
17
Sealing and insulating materials; Wear-resistant, corrosion-resistant, abrasion-resistant, adhesion-resistant, impact-resistant, rot-resistant, acid-resistant, moisture-resistant, heat-resistant and slide-promoting products, namely boards, moulded parts, hollow parts, pipes, pipe parts, made from artificial resins, plastics, rubber, gutta-percha, gum, rubber substitutes, asbestos and mica, including in combination with other materials; Wear-resistant, corrosion-resistant, abrasion-resistant, adhesion-resistant, impact-resistant, rot-resistant, acid-resistant, moisture-resistant, heat-resistant and slide-promoting finished and semi-finished products, namely boards, moulded parts, hollow parts, pipes, pipe parts, made from artificial resins, plastics, thermoplastics, rubber, gutta-percha, gum, rubber substitutes, including in combination with other materials
19
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; Boards, moulded parts, hollow parts, pipes, pipe parts (none of the aforesaid of metal), in particular of plastic, slide-promoting plastic or other slide-promoting materials not of metal, 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; Boards, moulded parts, hollow parts and pipes of high molecular weight plastic, in particular polyethylene, including in combination with other materials, for wear-retardant and slide-promoting reinforcement and lining of conveyor chutes, hoppers and other sliding surfaces in conveying installations, and bunkers, silos and other containers, all for use in the transport and storage of bulk goods in fine-grained and paste form