# United States tariff lines under HS 7308.90

> The United States tariff splits HS 7308.90 (structures (excluding prefabricated buildings of heading 9406) and parts of structures (for example, bridges and bridge sections, lock gates, towers, lattice masts, roofs, roofing frameworks, doors and windows and their frames and thresholds for doors, shutters, balustrades, pillars and columns) of iron or steel; plates, rods, angles, shapes, sections, tubes and the like, prepared for use in structures, of iron or steel) into 6 national lines: 7308.90.30.00 (not in part of alloy steel), 7308.90.60.00 (other), 7308.90.70.00 (steel grating), 7308.90.95.30 (sheet-metal roofing, siding, flooring and roof drainage equipment) and 2 others. Every United States line under 7308.90 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/730890
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 73](https://border.bot/countries/united-states/hs-codes/73) / [7308.90](https://border.bot/countries/united-states/hs-codes/730890)

## Key facts

- HS subheading: [7308.90](https://border.bot/hs-codes/730890)
- Duty (MFN): Free
- National lines: 6
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 73: Articles of iron or steel

## United States lines under 7308.90

The United States tariff splits HS 7308.90 (structures (excluding prefabricated buildings of heading 9406) and parts of structures (for example, bridges and bridge sections, lock gates, towers, lattice masts, roofs, roofing frameworks, doors and windows and their frames and thresholds for doors, shutters, balustrades, pillars and columns) of iron or steel; plates, rods, angles, shapes, sections, tubes and the like, prepared for use in structures, of iron or steel) into 6 national lines: 7308.90.30.00 (not in part of alloy steel), 7308.90.60.00 (other), 7308.90.70.00 (steel grating), 7308.90.95.30 (sheet-metal roofing, siding, flooring and roof drainage equipment) and 2 others.

Every United States line under 7308.90 is free of general (MFN) duty.

- [7308.90.30.00](https://border.bot/countries/united-states/hs-codes/7308903000) Other, Columns, pillars, posts, beams, girders and similar structural units, Not in part of alloy steel. Duty (MFN): free
- [7308.90.60.00](https://border.bot/countries/united-states/hs-codes/7308906000) Other, Columns, pillars, posts, beams, girders and similar structural units, Other. Duty (MFN): free
- [7308.90.70.00](https://border.bot/countries/united-states/hs-codes/7308907000) Other, Other, Steel grating. Duty (MFN): free
- [7308.90.95.30](https://border.bot/countries/united-states/hs-codes/7308909530) Other, Other, Other, Sheet-metal roofing, siding, flooring and roof drainage equipment. Duty (MFN): free
- [7308.90.95.60](https://border.bot/countries/united-states/hs-codes/7308909560) Other, Other, Other, Other, Architectural and ornamental work. Duty (MFN): free
- [7308.90.95.90](https://border.bot/countries/united-states/hs-codes/7308909590) Other, Other, Other, Other, Other. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 7308.90 yet.

- [The Harmonized System text for 7308.90](https://border.bot/hs-codes/730890)

- Previous subheading: [7308.40](https://border.bot/countries/united-states/hs-codes/730840) Structures (excluding prefabricated buildings of heading 9406) and parts of structures (for example, bridges and bridge sections, lock gates, towers, lattice masts, roofs, roofing frameworks, doors and windows and their frames and thresholds for doors, shutters, balustrades, pillars and columns) of iron or steel; plates, rods, angles, shapes, sections, tubes and the like, prepared for use in structures, of iron or steel
- Next subheading: [7309.00](https://border.bot/countries/united-states/hs-codes/730900) Reservoirs, tanks, vats and similar containers for any material (other than compressed or liquefied gas), of iron or steel, of a capacity exceeding 300 liters, whether or not lined or heat insulated, but not fitted with mechanical or thermal equipment

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 7308.90?

The United States tariff splits HS 7308.90 (structures (excluding prefabricated buildings of heading 9406) and parts of structures (for example, bridges and bridge sections, lock gates, towers, lattice masts, roofs, roofing frameworks, doors and windows and their frames and thresholds for doors, shutters, balustrades, pillars and columns) of iron or steel; plates, rods, angles, shapes, sections, tubes and the like, prepared for use in structures, of iron or steel) into 6 national lines: 7308.90.30.00 (not in part of alloy steel), 7308.90.60.00 (other), 7308.90.70.00 (steel grating), 7308.90.95.30 (sheet-metal roofing, siding, flooring and roof drainage equipment) and 2 others.

### What is the duty on HS 7308.90 in the United States?

Every United States line under 7308.90 is free of general (MFN) duty.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/730890.json