… reservoirs, tanks, vats and similar containers, for any material (other than compressed or liquefied gas), of a … lined or heat-insulated, but not fitted with mechanical or thermal equipment. …
Explanatory notes
… reservoirs, tanks, vats and similar containers, for any material (other than compressed or liquefied gas), of a … lined or heat‑insulated, but not fitted with mechanical or thermal equipment. The Explanatory Note to heading 73.09 … corrosion, aluminium tends to replace iron and steel in the manufacture of reservoirs, tanks, etc., particularly in the …