# United States tariff lines under HS 7306.40

> The United States tariff splits HS 7306.40 (other, welded, of circular cross-section, of stainless steel) into 13 national lines: 7306.40.10.10 (containing more than 1.5 percent but less than 5 percent by weight of molybdenum), 7306.40.10.15 (other), 7306.40.10.90 (other), 7306.40.50.05 (of high-nickel alloy steel) and 9 others. Every United States line under 7306.40 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/730640
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) / [7306.40](https://border.bot/countries/united-states/hs-codes/730640)

## Key facts

- HS subheading: [7306.40](https://border.bot/hs-codes/730640)
- Duty (MFN): Free
- National lines: 13
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 73: Articles of iron or steel

## United States lines under 7306.40

The United States tariff splits HS 7306.40 (other, welded, of circular cross-section, of stainless steel) into 13 national lines: 7306.40.10.10 (containing more than 1.5 percent but less than 5 percent by weight of molybdenum), 7306.40.10.15 (other), 7306.40.10.90 (other), 7306.40.50.05 (of high-nickel alloy steel) and 9 others.

Every United States line under 7306.40 is free of general (MFN) duty.

- [7306.40.10.10](https://border.bot/countries/united-states/hs-codes/7306401010) Other, welded, of circular cross section, of stainless steel, Having a wall thickness of less than 1.65 mm, Containing more than 0.5 percent by weight of nickel, Containing more than 1.5 percent but less than 5 percent by weight of molybdenum. Duty (MFN): free
- [7306.40.10.15](https://border.bot/countries/united-states/hs-codes/7306401015) Other, welded, of circular cross section, of stainless steel, Having a wall thickness of less than 1.65 mm, Containing more than 0.5 percent by weight of nickel, Other. Duty (MFN): free
- [7306.40.10.90](https://border.bot/countries/united-states/hs-codes/7306401090) Other, welded, of circular cross section, of stainless steel, Having a wall thickness of less than 1.65 mm, Other. Duty (MFN): free
- [7306.40.50.05](https://border.bot/countries/united-states/hs-codes/7306405005) Other, welded, of circular cross section, of stainless steel, Having a wall thickness of 1.65 mm or more, Of high-nickel alloy steel. Duty (MFN): free
- [7306.40.50.15](https://border.bot/countries/united-states/hs-codes/7306405015) Other, welded, of circular cross section, of stainless 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
- [7306.40.50.40](https://border.bot/countries/united-states/hs-codes/7306405040) Other, welded, of circular cross section, of stainless steel, Having a wall thickness of 1.65 mm or more, Other, Other, cold-drawn or cold-rolled (cold- reduced), Containing more than 0.5 percent but less than 24 percent by weight of nickel. Duty (MFN): free
- [7306.40.50.42](https://border.bot/countries/united-states/hs-codes/7306405042) Other, welded, of circular cross section, of stainless steel, Having a wall thickness of 1.65 mm or more, Other, Other, cold-drawn or cold-rolled (cold- reduced), Other, Containing less than 15 percent by weight of chromium. Duty (MFN): free
- [7306.40.50.44](https://border.bot/countries/united-states/hs-codes/7306405044) Other, welded, of circular cross section, of stainless steel, Having a wall thickness of 1.65 mm or more, Other, Other, cold-drawn or cold-rolled (cold- reduced), Other, Other. Duty (MFN): free
- [7306.40.50.62](https://border.bot/countries/united-states/hs-codes/7306405062) Other, welded, of circular cross section, of stainless steel, Having a wall thickness of 1.65 mm or more, Other, Other, With an outside diameter not exceeding 114.3 mm, Containing more than 0.5 percent but less than 24 percent by weight of nickel, Containing more than 1.5 percent but less than 5 percent by weight of molybdenum. Duty (MFN): free
- [7306.40.50.64](https://border.bot/countries/united-states/hs-codes/7306405064) Other, welded, of circular cross section, of stainless steel, Having a wall thickness of 1.65 mm or more, Other, Other, With an outside diameter not exceeding 114.3 mm, Containing more than 0.5 percent but less than 24 percent by weight of nickel, Other. Duty (MFN): free
- [7306.40.50.80](https://border.bot/countries/united-states/hs-codes/7306405080) Other, welded, of circular cross section, of stainless steel, Having a wall thickness of 1.65 mm or more, Other, Other, With an outside diameter not exceeding 114.3 mm, Other. Duty (MFN): free
- [7306.40.50.85](https://border.bot/countries/united-states/hs-codes/7306405085) Other, welded, of circular cross section, of stainless 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, Containing more than 0.5 percent but less than 24 percent by weight of nickel. Duty (MFN): free
- [7306.40.50.90](https://border.bot/countries/united-states/hs-codes/7306405090) Other, welded, of circular cross section, of stainless 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 7306.40 yet.

- [The Harmonized System text for 7306.40](https://border.bot/hs-codes/730640)

- Previous subheading: [7306.30](https://border.bot/countries/united-states/hs-codes/730630) Other, welded, of circular cross section, of iron or nonalloy steel
- Next subheading: [7306.50](https://border.bot/countries/united-states/hs-codes/730650) Other, welded, of circular cross section, of other alloy steel

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 7306.40?

The United States tariff splits HS 7306.40 (other, welded, of circular cross-section, of stainless steel) into 13 national lines: 7306.40.10.10 (containing more than 1.5 percent but less than 5 percent by weight of molybdenum), 7306.40.10.15 (other), 7306.40.10.90 (other), 7306.40.50.05 (of high-nickel alloy steel) and 9 others.

### What is the duty on HS 7306.40 in the United States?

Every United States line under 7306.40 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/730640.json