Metal pipes; metal pipe registers; pipework of metal; steel; steel alloys; non-ferrous metals; alloys of common metal; ribbed metal pipes; metal pipes for heat exchangers; oil cooler metal pipes, metal condenser tubes, metal restrictor tubes, metal coiled pipes, metal pipes for manometer coils, metal hoses, spring bellows, namely, metal Bourdon tubes; double metal tubes; gas manifolds of metal, namely, manifolds of metal for pipelines; metal steam tubes; metal liquid pipes; metal water pipes;...