06
Building materials of metal; pipes and pipe couplings of
metal in connection with pipe works for transporting and
distributing all liquids, cold and hot, gases and power;
containers of metal for radioactive waste, fences of metal,
metal screening, railroad ties of metal, linings of metal
for pipes, vats of metal, metal manhole covers
17
Pipe joints, parts of couplings for non-metallic pipes
19
Pipes and non-metallic accessories for pipelines for
transporting and distributing all liquids, hot and cold,
gases and forms of energy; building materials, not of metal,
non-metallic paving blocks, non-metallic edges, kerb stones
of concrete, pavement kerbs not of metal, pavement kerbs of
concrete, rail braces, manholes not of metal, technical
chambers and galleries not of metal, prefabricated shelters
(civil and military) not of metal, arch blocks, retaining
walls not of metal (building elements), retaining walls of
stone or of concrete, abutments, modular elements not of
metal for refuse treatment centers, acoustic screens,
non-metallic paving, non-metallic cable ducts, paving slabs
of concrete and of cement, soddable paving slabs not of
metal, tree wells not of metal, storage tanks not of metal,
collection elements for tanks and wells, branch boxes not of
metal for pipe works, tympans and abutments not of metal for
drains, hydraulic bypass drains for surface water and
wastewater, headblocks not of metal, water pipes not of
metal, cantilever slabs not of metal, drainage slabs not of
metal, storage partitions not of metal, pits not of metal,
decks and cornices, not of metal, parts not of metal
prefabricated for cellars, containers, not of metal for
radioactive waste, blocks for built-on chimneys not of
metal, beams, not of metal, joists, not of metal, posts, not
of metal, fences, not of metal, meter inspection covers not
of metal, vaults, not of metal, columbaria not of metal,
floors of concrete, floor tiles not of metal, precast slabs
not of metal, hollow slabs not of metal, prefabricated
foundation units