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HTS 8404Chapter 84

HTS 8404 — Auxiliary plant for use with boilers of heading 8402 or 8403 (for example, economizers, super-heaters, soot removers, gas recoverers); condensers for steam or other vapor power units; parts thereof: Duty Rate & Import Guide

Nuclear Reactors, Boilers, Machinery · 4 pending regulations · 10 court cases · Updated daily from USITC

Duty Rates

General

Free

Special

Free

Column 2

Free

Trade Agreement Eligibility

CUSMAKORUS

Trade Intelligence

Regulatory Pressure

HIGH

0 rulings — · 4 reg · 8 CIT, 2 CAFC

Global Rates

🇺🇸 Free

🇬🇧 United Kingdom: N/A · 🇪🇺 European Union: N/A · 🇨🇦 Canada: N/A · 🇧🇷 Brazil: N/A

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Data compiled from USITC HTS, Federal Register, CourtListener · As of 2026-04-30 · Updates weekly

Active DisputesRecent court cases or pending regulations affect this code
Regulatory Pressure

This code has elevated regulatory activity — 0 CBP rulings (0 in last 2 years, trend: stable), 4 pending Federal Register actions, and 10 CIT/CAFC cases.

Trade Remedy

Additional Tariffs Apply

Section 301 — China Tariffs+25%

List 1 — ~$34B of Chinese goods (machinery, electronics, industrial components)

Active — 7.5%–25% additional duties on Chinese-origin goods across four tranches (Lists 1–4A), with higher 2024/2025 increases on targeted product categories.

Effective 2018-07-06

These additional tariffs apply on top of the general duty rate. View full trade remedy tracker →

Subheadings (5)

CodeDescriptionRate
8404.10.00Auxiliary plant for use with boilers of heading 8402 or 84033.5%
8404.10.00.10Economizers—
8404.10.00.50Other—
8404.20.00.00Condensers for steam or other vapor power units5%
8404.90.00.00Parts3.5%

Federal Register (4)

Notice2021-23301
2021-10-26

Publication of a Report on the Effect of Imports of Titanium Sponge on the National Security: An Investigation Conducted Under Section 232 of the Trade Expansion Act of 1962, as Amended

Publication of a report.

Notice2021-16113
2021-08-02

Publication of a Report on the Effect of Imports of Uranium on the National Security: An Investigation Conducted Under Section 232 of the Trade Expansion Act of 1962, as Amended

Publication of a report.

Notice2020-14358
2020-07-06

Publication of a Report on the Effect of Imports of Aluminum on the National Security: An Investigation Conducted Under Section 232 of the Trade Expansion Act of 1962, as Amended

Publication of a report.

Notice2019-10191
2019-05-17

Request for Comments Concerning Proposed Modification of Action Pursuant to Section 301: China's Acts, Policies, and Practices Related to Technology Transfer, Intellectual Property, and Innovation

Request for comments and notice of public hearing.

Court of International Trade & Federal Circuit (10)

Rkw Klerks Inc. v. United States2024-03-07
23-1210Court of Appeals for the Federal Circuit
Xerox Corp. v. United States2015-11-23
05-00474United States Court of International Trade
Rubbermaid Commercial Products, LLC v. United States2014-12-02
Slip Op. 14-139; Court 10-00116United States Court of International Trade
Wilton Industries, Inc. v. United States2013-11-05
2013-1028Court of Appeals for the Federal Circuit
Zhejiang DunAn Hetian Metal Co. v. United States2010-04-19
Slip Op. 10-41; Court 09-00217United States Court of International Trade
View all 10+ cases on PACER →

Matching Export Code (Schedule B)

8404100010Schedule B

ECONOMIZERS FOR USE WITH BOILERS OF HEADING 8402 OR 8403

Census Bureau export classification matching this HTS import code.

← 8401.40.00.008404.10.00 →