Boards and panels as building material, not of metal, for attaching railway tracks, in particular resilient connecting panels, entry boards, load distribution flaps, support panels, foundation slab, support plates, protective plates, ribbed plates; gauge adjustment rails, sockets and wedges, not of metal, for attaching rails for railway vehicles; covers, not of metal for rail fastenings for railway vehicles; supporting strips and supporting gantries, not of metal; framework, not of metal; wall linings not of metal; parts of the aforesaid goods included in this class