Building materials of metal; Metal materials for building; Metal building materials in the form of blocks; Metal building materials in the form of panels; Metal building materials in the form of sheets; Metal building materials in the form of slabs; Metal building materials in the form of strips; Building materials made principally of common metal; Building materials made wholly of common metal alloys; Metal materials for building decoration; Metal building materials; Finishing materials of metals for use in building; Metal building materials in the form of beams; Metal building materials for slating