Subheading 8402 19 of the Combined Nomenclature covers steam boilers other than water-tube boilers, including fire-tube boilers and other steam-generating designs not classified under subheadings 8402 11 and 8402 12. In a fire-tube boiler, hot combustion gases flow inside tubes surrounded by water in a shell, which limits operating pressure to approximately 25 bar but provides simpler construction and lower costs. Fire-tube boilers are used in smaller industrial plants, laundries, hospitals, hotels, and heating installations requiring low to medium-parameter steam. Typical capacities range from 0.5 to 20 tonnes of steam per hour. Subheading 8402 19 also classifies locomotive-type fire-tube steam boilers and industrial series boilers not qualifying as water-tube types. Classification follows GRI rules 1 and 6. The key criterion is distinction from water-tube boilers (8402 11/12) and from super-heated water boilers (8402 20). Parts for steam boilers are classified under subheading 8402 90.

Steam boilers under subheading 8402 19 are subject to the Pressure Equipment Directive PED 2014/68/EU as pressure equipment. The PED risk category depends on the product of pressure and volume: most industrial fire-tube boilers qualify for category III or IV, requiring conformity assessment with the involvement of a Notified Body. The harmonised standard EN 12953 (shell boilers) is the principal standard applied to fire-tube boilers, specifying design, material, manufacturing, and testing requirements. CE marking is mandatory. Import requires an EORI number, customs declaration with CN code 8402 19, EU declaration of conformity, Notified Body certificate, and technical documentation. Fossil fuel boilers are also subject to Ecodesign requirements. EMC Directive 2014/30/EU may apply to electronic control systems. The Machinery Regulation (EU) 2023/1230 applies to mechanical elements such as fuel feeders and ash removal systems.

MFN duty rates for steam boilers under subheading 8402 19 should be verified in the European Commission's TARIC database. Fire-tube boilers are standard industrial products manufactured in series by numerous global producers. Major exporters include companies from Germany, Italy, the UK, China, and Turkey. Preferential tariff rates may be available under FTA, GSP, and bilateral EU agreements subject to compliance with rules of origin. Chapter 84 products are not subject to the CBAM mechanism. The importer should check TARIC for any anti-dumping duties on boilers from the country of origin. The customs value includes the cost of the boiler with standard equipment, automation, and fittings. Transport costs to the EU border are included in the CIF customs value. Import VAT is charged at the national rate. Market surveillance authorities may verify the compliance of imported boilers with the PED directive. Current rates and trade measures should be verified in TARIC before each import.