HTSBase
HTSUS, United States

8402.12.00.00

Watertube boilers with a steam production not exceeding 45 t per hour

Classification path

  1. Steam or other vapor generating boilers (other than central heating hot water boilers capable also of producing low pressure steam); super-heated water boilers; parts thereof
  2. Steam or other vapor generating boilers
  3. Watertube boilers with a steam production not exceeding 45 t per hour

Rates of duty

General (MFN)
4.3%
Column 2Cuba, North Korea, Russia, Belarus
45%
Unit of quantity
t

Trade agreement rates

FreeGSP (lapsed since Dec 31, 2020), U.S.-Australia FTA, U.S.-Bahrain FTA, U.S.-Chile FTA, U.S.-Colombia TPA, AGOA (authorized through Dec 31, 2026), E, U.S.-Israel FTA, U.S.-Jordan FTA, U.S.-Korea FTA, U.S.-Morocco FTA, U.S.-Oman FTA, CAFTA-DR, U.S.-Panama TPA, U.S.-Peru TPA, USMCA, U.S.-Singapore FTA

Related lines in heading 8402

About heading 8402

Steam or other vapor generating boilers (other than central heating hot water boilers capable also of producing low pressure steam); super-heated water boilers; parts thereof

Heading 8402 covers steam or other vapor generating boilers, super-heated water boilers, and their parts. It is split between watertube boilers above and below 45 t per hour of steam production, other vapor generating boilers including hybrid types, super-heated water boilers, and parts.

Full guide to heading 8402

Products in this heading

  • Watertube steam boiler rated at 60 t per hour
  • Packaged watertube boiler rated at 20 t per hour
  • Hybrid boiler combining firetube and watertube sections
  • Super-heated water boiler for an industrial plant
  • Heat exchanger supplied as a part for a boiler of this heading
  • Boiler drums, headers and other parts for steam generating boilers

Frequently asked questions

What is the HTS code for a watertube boiler producing more than 45 t of steam per hour?

Such a boiler is classified under 8402.11.00.00, with a general (MFN) rate of 5.2%.

What is the duty on a super-heated water boiler?

Super-heated water boilers fall under 8402.20.00.00 and carry a general (MFN) rate of 3.3%.

How do I classify a heat exchanger that is a part for a steam boiler?

Boiler parts that are heat exchangers go under 8402.90.00.10, dutiable at a general (MFN) rate of 4.3%. Other boiler parts go under 8402.90.00.90 at the same rate.

Source: USITC Harmonized Tariff Schedule, retrieved October 22, 2026.

HTS 8402.12.00.00: Watertube boilers with a steam production not exceeding 45..., 4.3% duty | HTSBase