6 Metal tanks, pipes, and tubes used in the preparation of beverages in commercial industry; apparatus and installations, including heating and cooling apparatus, for the commercial production of beverages, namely, metal valves other than parts of machines; metal pipes for use in heating and cooling for the commercial production of beverages, and for use in brewing, packaging, storing, and bottling beverages in the commercial industry; and prefabricated metal platforms for use in heating and cooling for the commercial production of beverages, and for use in brewing, packaging, storing, and bottling beverages in the commercial industry