… Reservoirs, tanks, vats and similar containers for any material (other than compressed or liquefied gas), of iron … of a capacity exceeding 300 l, whether or not lined or heat-insulated, but not fitted with mechanical or thermal …
Explanatory notes
… 73.09 ‑ Reservoirs, tanks, vats and similar containers for any material (other than compressed or liquefied gas), of iron … of a capacity exceeding 300 l, whether or not lined or heat‑insulated, but not fitted with mechanical or thermal …