STAGE DEX

Building materials of metal; transportable buildings of metal; floors of metal; framework of metal for building; tubes of metal and steel; pipework of metal; prefabricated platforms of metal; staircases of metal; rails of metal

Building materials, not of metal; rigid pipes, not of metal building; transportable buildings, not of metal; floors, not of metal; framework, not of metal, for building; prefabricated platforms, not of metal; staircases not of metal