17
Goods of plastic (semi-finished products), other than for windows, doors and roller shutters; Packing, stopping and insulating materials, other than for windows, doors and roller shutters; Flexible hoses, not of metal; Industrial foam plastics and parts made from these materials (semi-manufactures); Insulation shells for valves, taps (faucets), water meters, pumps, heating and water distributors, shut-off valves, gate valves, pressure reducers, de-aerators, steam traps, non-return valves, filters, sieves, compensators, orifice gauges, inspection glasses, blanks, safety fittings, drives, pipe fittings, connections for pipes, pipe bends, reducers, junctions, crossings, flanged connections; Insulating stoppers
19
Building materials (non-metallic), other than for windows, doors and roller shutters; Rigid pipes, not of metal, for building; Pitch, tar, bitumen and asphalt; Buildings, transportable, not of metal; Monuments, not of metal