Metal prefabricated and non prefabricated mobile dwelling units; acoustic panels of metal; door panels of metal; fence panels of metal; aluminum siding; wall panels of metal; metal gates and fencing panels; roofing panels of metal; building panels of metal; ceiling panels of metal; signaling panels, non-luminous and non-mechanical, of metal; pre-fabricated buildings with metal carrying structure; pre-fabricated metal buildings; pre-fabricated metal architectural columns; pre-fabricated houses of metal; fabricated metal components for building foundations [construction materials]; turntables [railways]; offshore drilling platforms of metal.