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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 · 10 court cases · Updated daily from USITC

Duty Rates

General

Free

Special

Free

Column 2

Free

Trade Agreement Eligibility

CUSMAKORUS

Trade Intelligence

Data compiled from USITC HTS, CourtListener · As of 2026-10-30 · Updates weekly

Regulatory Pressure

This code has elevated regulatory activity — 0 CBP rulings (0 in last 2 years, trend: stable), 0 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%

Court of International Trade & Federal Circuit (10)

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 →