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6
Common metals and their alloys; metal building materials; transportable buildings of metal; materials of metal for railway tracks; non-electric cables and wires of common metal; ironmongery, small items of metal hardware; pipes and tubes of metal; safes; goods of common metal not included in other classes; ores.
tubing, elbows, t's, y-fittings, union couplings, couplings, caps, adapters, air chambers, bushings, reducers, venturis, branch connectors, bulkhead fittings, crosses, cross-overs, eccentric couplings, expansion joints, return bends, flanged fittings, t's, and elbows, floor flanges, pipe hangers, manufactured of cast or wrought metal
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11
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes.
plumbing, heating and ventilation parts and fittings-namely, tubing; elbows; t's, y-fittings, union couplings, couplings; caps; adapters, air chambers, bushings, reducers; traps; venturis; branch connectors; bulkhead fittings; crosses; crossovers, eccentric couplings; expansion joints; drain fittings, flanged sink ells, return bends, flanged fittings; t's and elbows; closet flanges, floor flanges, connectors and adapters for soil pipe, closet elbows; pipe hangers, stack and drainage fittings all fabricated from copper, wrought copper, or cast brass or bronze or fabricated of a molded, cast or extruded plastic; also valves, including sillcocks, boiler drains, globe, ball, angle and u-valves, stop and waste valves, check valves, butterfly valves, manufactured of cast brass, bronze or iron for use in heating, plumbing and ventilation systems and installations
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17
Rubber, gutta-percha, gum, asbestos, mica and goods made from these materials and not included in other classes; plastics in extruded form for use in manufacture; packing, stopping and insulating materials; flexible pipes, not of metal.
tubing, elbows, t's, y-fittings, union couplings, couplings, caps, adapters, bushings, reducers, venturis, bulkhead fittings, crosses, crossovers, eccentric couplings, return bends, flanged fittings, t's and elbows, floor flanges, fabricated of a moulded, cast or extruded plastic