8430.49.40

Analysis

HTS 8430.49.40 covers offshore oil and natural gas drilling and production platforms under heading 8430 (other moving, grading, leveling, scraping, excavating, tamping, compacting, extracting or…).

Goods from countries without normal trade relations pay the column 2 rate of 45% instead of nothing, so origin decides between free entry and a 45% duty.

There is no general-rate duty on this line, which puts it with roughly 61% of the 823 tariff lines in chapter 84 that are also free. Chapter 99 measures such as Section 301 or 232 can still apply on top, depending on where the goods come from.

Census statistics map these goods to NAICS 336611 (Ship Building and Repairing), an industry of 497 US establishments employing 99,786 people, the industry a domestic producer of these goods reports under.

All 10 neighbouring lines carry the same duty-free rate, so a borderline choice between them changes the statistics reported, not the duty paid.

Every edition we compared, from Jan 2023 to Oct 2026 (Rev. 22), shows the same general rate of Free.