Construction materials, namely, dry plaster lining boards made of calcium silicate and stripes and circular hollow section tubes, namely, pipe ducts, cable ducts and installation ducts made of calcium silicate, all for the use in building, industrial, tunnel and underground constructions, for ceilings, partitions and external walls, for protection of structural steelwork, for construction and protection of cable, ventilation and smoke extraction ducts and smoke extraction flaps

building boards for fire protection; building boards on a mineral basis for fire protection