# United States tariff lines under HS 7306.30

> The United States tariff splits HS 7306.30 (other, welded, of circular cross-section, of iron or non-alloy steel) into 18 national lines: 7306.30.10.10 (internally coated or lined with a non-electrically insulating material, suitable for use as electrical conduit), 7306.30.10.90 (other), 7306.30.30.00 (tapered steel pipes and tubes principally used as parts of illuminating articles), 7306.30.50.10 (suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, whether or not cold drawn) and 14 others. Every United States line under 7306.30 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/730630
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) / [7306.30](https://border.bot/countries/united-states/hs-codes/730630)

## Key facts

- HS subheading: [7306.30](https://border.bot/hs-codes/730630)
- Duty (MFN): Free
- National lines: 18
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 73: Articles of iron or steel

## United States lines under 7306.30

The United States tariff splits HS 7306.30 (other, welded, of circular cross-section, of iron or non-alloy steel) into 18 national lines: 7306.30.10.10 (internally coated or lined with a non-electrically insulating material, suitable for use as electrical conduit), 7306.30.10.90 (other), 7306.30.30.00 (tapered steel pipes and tubes principally used as parts of illuminating articles), 7306.30.50.10 (suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, whether or not cold drawn) and 14 others.

Every United States line under 7306.30 is free of general (MFN) duty.

- [7306.30.10.10](https://border.bot/countries/united-states/hs-codes/7306301010) Other, welded, of circular cross section, of iron or nonalloy steel, Having a wall thickness of less than 1.65 mm, Internally coated or lined with a non-electrically insulating material, suitable for use as electrical conduit. Duty (MFN): free
- [7306.30.10.90](https://border.bot/countries/united-states/hs-codes/7306301090) Other, welded, of circular cross section, of iron or nonalloy steel, Having a wall thickness of less than 1.65 mm, Other. Duty (MFN): free
- [7306.30.30.00](https://border.bot/countries/united-states/hs-codes/7306303000) Other, welded, of circular cross section, of iron or nonalloy steel, Having a wall thickness of 1.65 mm or more, Tapered steel pipes and tubes principally used as parts of illuminating articles. Duty (MFN): free
- [7306.30.50.10](https://border.bot/countries/united-states/hs-codes/7306305010) Other, welded, of circular cross section, of iron or nonalloy steel, Having a wall thickness of 1.65 mm or more, Other, Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, whether or not cold drawn. Duty (MFN): free
- [7306.30.50.15](https://border.bot/countries/united-states/hs-codes/7306305015) Other, welded, of circular cross section, of iron or nonalloy steel, Having a wall thickness of 1.65 mm or more, Other, Other, cold-drawn. Duty (MFN): free
- [7306.30.50.20](https://border.bot/countries/united-states/hs-codes/7306305020) Other, welded, of circular cross section, of iron or nonalloy steel, Having a wall thickness of 1.65 mm or more, Other, Other, cold-rolled (cold-reduced) with a wall thickness not exceeding 2.54 mm. Duty (MFN): free
- [7306.30.50.26](https://border.bot/countries/united-states/hs-codes/7306305026) Other, welded, of circular cross section, of iron or nonalloy steel, Having a wall thickness of 1.65 mm or more, Other, Other, With an outside diameter not exceeding 114.3 mm, Galvanized, Imported with coupling, With an outside diameter not exceeding 50.8 mm. Duty (MFN): free
- [7306.30.50.27](https://border.bot/countries/united-states/hs-codes/7306305027) Other, welded, of circular cross section, of iron or nonalloy steel, Having a wall thickness of 1.65 mm or more, Other, Other, With an outside diameter not exceeding 114.3 mm, Galvanized, Imported with coupling, With an outside diameter exceeding 50.8 mm but not exceeding 114.3 mm. Duty (MFN): free
- [7306.30.50.28](https://border.bot/countries/united-states/hs-codes/7306305028) Other, welded, of circular cross section, of iron or nonalloy steel, Having a wall thickness of 1.65 mm or more, Other, Other, With an outside diameter not exceeding 114.3 mm, Galvanized, Internally coated or lined with a non-electrically insulating material, suitable for use as electrical conduit. Duty (MFN): free
- [7306.30.50.31](https://border.bot/countries/united-states/hs-codes/7306305031) Other, welded, of circular cross section, of iron or nonalloy steel, Having a wall thickness of 1.65 mm or more, Other, Other, With an outside diameter not exceeding 114.3 mm, Galvanized, Other, With an outside diameter not exceeding 50.8 mm. Duty (MFN): free
- [7306.30.50.33](https://border.bot/countries/united-states/hs-codes/7306305033) Other, welded, of circular cross section, of iron or nonalloy steel, Having a wall thickness of 1.65 mm or more, Other, Other, With an outside diameter not exceeding 114.3 mm, Galvanized, Other, With an outside diameter exceeding 50.8 mm but not exceeding 114.3 mm. Duty (MFN): free
- [7306.30.50.35](https://border.bot/countries/united-states/hs-codes/7306305035) Other, welded, of circular cross section, of iron or nonalloy steel, Having a wall thickness of 1.65 mm or more, Other, Other, With an outside diameter not exceeding 114.3 mm, Other, Tube and pipe hollows for redrawing. Duty (MFN): free
- [7306.30.50.41](https://border.bot/countries/united-states/hs-codes/7306305041) Other, welded, of circular cross section, of iron or nonalloy steel, Having a wall thickness of 1.65 mm or more, Other, Other, With an outside diameter not exceeding 114.3 mm, Other, Imported with coupling, With an outside diameter not exceeding 50.8 mm. Duty (MFN): free
- [7306.30.50.43](https://border.bot/countries/united-states/hs-codes/7306305043) Other, welded, of circular cross section, of iron or nonalloy steel, Having a wall thickness of 1.65 mm or more, Other, Other, With an outside diameter not exceeding 114.3 mm, Other, Imported with coupling, With an outside diameter exceeding 50.8 mm but not exceeding 114.3 mm. Duty (MFN): free
- [7306.30.50.56](https://border.bot/countries/united-states/hs-codes/7306305056) Other, welded, of circular cross section, of iron or nonalloy steel, Having a wall thickness of 1.65 mm or more, Other, Other, With an outside diameter not exceeding 114.3 mm, Other, Other, With an outside diameter not exceeding 50.8 mm. Duty (MFN): free
- [7306.30.50.57](https://border.bot/countries/united-states/hs-codes/7306305057) Other, welded, of circular cross section, of iron or nonalloy steel, Having a wall thickness of 1.65 mm or more, Other, Other, With an outside diameter not exceeding 114.3 mm, Other, Other, With an outside diameter exceeding 50.8 mm but not exceeding 114.3 mm. Duty (MFN): free
- [7306.30.50.85](https://border.bot/countries/united-states/hs-codes/7306305085) Other, welded, of circular cross section, of iron or nonalloy steel, Having a wall thickness of 1.65 mm or more, Other, Other, With an outside diameter exceeding 114.3 mm but not exceeding 406.4 mm, Galvanized. Duty (MFN): free
- [7306.30.50.90](https://border.bot/countries/united-states/hs-codes/7306305090) Other, welded, of circular cross section, of iron or nonalloy steel, Having a wall thickness of 1.65 mm or more, Other, Other, With an outside diameter exceeding 114.3 mm but not exceeding 406.4 mm, Other. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 7306.30 yet.

- [The Harmonized System text for 7306.30](https://border.bot/hs-codes/730630)

- Previous subheading: [7306.29](https://border.bot/countries/united-states/hs-codes/730629) Other
- Next subheading: [7306.40](https://border.bot/countries/united-states/hs-codes/730640) Other, welded, of circular cross section, of stainless steel

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 7306.30?

The United States tariff splits HS 7306.30 (other, welded, of circular cross-section, of iron or non-alloy steel) into 18 national lines: 7306.30.10.10 (internally coated or lined with a non-electrically insulating material, suitable for use as electrical conduit), 7306.30.10.90 (other), 7306.30.30.00 (tapered steel pipes and tubes principally used as parts of illuminating articles), 7306.30.50.10 (suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, whether or not cold drawn) and 14 others.

### What is the duty on HS 7306.30 in the United States?

Every United States line under 7306.30 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/730630.json