6 Doors, [ gates, ] door and gate panels, [ hatches for door, gates, ] roofs, [ floors, skylight access hatches, armour plates and armour plating, metal door kick plates, steel plates and sheets plates, armor plating, ] all these goods being of metal, sealable, and fire, water, flood, blast, radiation, radioactivity, weapon, bullet, biological organism, burglar or pressure resistant, or waterproof, soundproof or secure, and being intended for nuclear, reprocessing, chemical, petrochemical, pharmaceutical, hospital or research installations, or for public works; [ roller doors, folding doors, drop doors, lift-up doors, ] armored doors, burglar resistant doors, blast-proof doors, acoustical doors, all these doors being of metal; fire and flood-resistant metal millwork, partition walls, [ fixed window casements, doors, operating sashes for windows ]