6 Installation materials of metal, namely, non-electric cable glands and hose connections, including in the form of split cable glands and hose connections; structural component parts for non-electric cable glands and hose connections of metal, namely, connector bodies, pressure screws, double nipples, reducers, enlarging connectors, elbows, sealing inserts, cable entries, antikink parts, bending protection parts, O-rings, divisible flange systems, locking rings, clamps, shielding contact elements, conical caps; structural component parts for non-electric cable glands and hose connections of metal, namely, spiral springs, spring rings, venting nozzles, connecting threads, blind plugs, plates, flanges, flange elbows, frames, pressure equalising inserts, nuts, locking bolts, locking screws, coupling pieces, clamping nipples, earthing brackets, shielding braids; metal hose clips in the nature of hose clamps; protection hoses of metal; pipes of metal, including in the form of corrugated pipes, in particular for cable routing; non-electric cable conduits of metal, including in the form of cable trays and in the form of cable tracks; structural component parts for non-electric cable conduits of metal, including in the form of cable trays and in the form of cable tracks, namely, covers for cable conduits, hinges, connection pieces, partitions, brackets, T-pieces, closures, seals, collars, assembly profiles, elbows, bending pieces, blind plates, caps, holding parts, bolts, screws, threaded rods, turners, retention elements, edge protectors, safety cables, telescopic components, hanging rods, support feet, clamps, wall brackets, anchors