6
Common metals, unwrought or semi-wrought; Alloys of common metal; steel, unwrought or semi-wrought; steel alloys; steel strip and sheets; metal building materials; Buildings of metal; transportable buildings of metal; pillars of metal for buildings; chromium; molybdenum; nickel; rods of metal for brazing and welding; swimming pools (metal structures); casks of metal; containers, cases, vats and tanks of metal; manhole covers of metal; closures of metal for containers; bottles and metal containers for compressed gas or liquid air; containers of metal for acids or liquid fuels; pipes, tubes, pipework and ferrules of metal; ducts of metal for ventilating and air-conditioning installations; water pipes of metal; penstock pipes of metal; manifolds of metal for pipelines; flanges and collars of metal; ladders and stair treads (steps) of metal; pallets of metal for handling, loading and transport; hoppers, non-mechanical, of metal
7
Machine axles and couplings for machine axles; transmission shafts, other than for land vehicles; stands for machines; crankcases for machines, motors and engines; heat exchangers (parts of machines); metal working and shaping machines; electric polishing machines and apparatus; dairy machines; turbines other than for land vehicles; expansion tanks (parts of machines); condensing installations; de-aerators for feedwater; water heaters (parts of machines); washing apparatus; high-pressure cleaning apparatus and steam-cleaning appliances; washing machines; washing installations for vehicles; agitators, mixers and kneading machines
11
Evaporators; steam accumulators; heat-recovery apparatus; heat exchangers; heating installations; water heating installations; cooling appliances and installations; cooling installations for liquids; sanitary apparatus and installations; clean rooms for sanitary installations; filters (parts of domestic or industrial facilities); air-conditioning apparatus and installations; air-conditioning installations; deodorising apparatus, not for personal use; distillation apparatus; sterilizers; water conduit installations; water distribution installations; water purification installations; water heaters (apparatus); water heaters; cooling installations for water; filters for drinking water; pressure water tanks; coils (parts of distilling, heating or cooling installations); cooling installations for milk