Judgment of the Court (Eighth Chamber) of 15 May 2019.#KORADO, a.s. v Generální ředitelství cel.#Request for a preliminary ruling from the Krajský soud v Ostravě – pobočka v Olomouci.#Reference for a preliminary ruling — Common Customs Tariff — Tariff classification — Combined Nomenclature — Welded steel parts — Radiators for central heating, not electrically heated — Headings 7307 and 7322 — Concepts of radiator ‘parts’ and ‘tube or pipe fittings’ — Implementing Regulation (EU) 2015/23