# HS code 7307.99: Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel

> HS code 7307.99 covers tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel, other than those classified in 7307.21, 7307.22, 7307.23, 7307.29, 7307.91, 7307.92 and 7307.93. It sits in heading 73.07 (tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel) in chapter 73 (articles of iron or steel). Other goods of heading 73.07 are classified under 7307.11 (cast fittings, of non-malleable cast iron), 7307.19 (cast fittings, other), 7307.21 (other, of stainless steel, flanges), 7307.22 (other, of stainless steel, threaded elbows, bends or sleeves) and 5 others. National tariff lines under 7307.99 are live on border.bot for the United States (5 lines, also used by 1 other country).

Source: https://border.bot/hs-codes/730799
Last updated: 11 October 2026

[HS codes](https://border.bot/hs-codes) / [Chapter 73](https://border.bot/hs-codes/73) / [73.07](https://border.bot/hs-codes/7307) / [7307.99](https://border.bot/hs-codes/730799)

## Key facts

- HS code: 7307.99
- Covers: Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel
- Heading: [73.07: Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel](https://border.bot/hs-codes/7307)
- Chapter: [73: Articles of iron or steel](https://border.bot/hs-codes/73)
- Edition: HS2022
- Duty in the United States: [See its 5 lines](https://border.bot/countries/united-states/hs-codes/730799)

## What this code covers

HS code 7307.99 covers tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel, other than those classified in 7307.21, 7307.22, 7307.23, 7307.29, 7307.91, 7307.92 and 7307.93.

The legal text of the subheading is “Other: Other”, read under “Other”, in HS2022.

## What it doesn’t cover

Other goods of heading 73.07 are classified under 7307.11 (cast fittings, of non-malleable cast iron), 7307.19 (cast fittings, other), 7307.21 (other, of stainless steel, flanges), 7307.22 (other, of stainless steel, threaded elbows, bends or sleeves) and 5 others.

- [7307.11](https://border.bot/hs-codes/730711) Cast fittings: Of non-malleable cast iron
- [7307.19](https://border.bot/hs-codes/730719) Cast fittings: Other
- [7307.21](https://border.bot/hs-codes/730721) Other, of stainless steel: Flanges
- [7307.22](https://border.bot/hs-codes/730722) Other, of stainless steel: Threaded elbows, bends and sleeves
- [7307.23](https://border.bot/hs-codes/730723) Other, of stainless steel: Butt welding fittings
- [7307.29](https://border.bot/hs-codes/730729) Other, of stainless steel: Other
- [7307.91](https://border.bot/hs-codes/730791) Other: Flanges
- [7307.92](https://border.bot/hs-codes/730792) Other: Threaded elbows, bends and sleeves
- [7307.93](https://border.bot/hs-codes/730793) Other: Butt welding fittings

## How it is structured

7307.99 is a six-digit subheading. Its first two digits, 73, are the chapter; the first four, 7307, are heading 73.07; the last two, 99, identify the subheading within the heading.

Countries add their own digits after these six for their national tariff lines.

- Chapter 73: Articles of iron or steel
- Heading 73.07: Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel
- Within the heading: Other
- Subheading 7307.99: Other

## In other countries

National tariff lines under 7307.99 are live on border.bot for the United States (5 lines, also used by 1 other country).

- [United States](https://border.bot/countries/united-states/hs-codes/730799): 5 lines, used by 1 other country

- Previous subheading: [7307.93](https://border.bot/hs-codes/730793) Other: Butt welding fittings
- Next subheading: [7308.10](https://border.bot/hs-codes/730810) Bridges and bridge-sections

## Frequently asked questions

### What does HS code 7307.99 cover?

HS code 7307.99 covers tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel, other than those classified in 7307.21, 7307.22, 7307.23, 7307.29, 7307.91, 7307.92 and 7307.93.

### Which heading and chapter is HS code 7307.99 in?

HS code 7307.99 is in heading 73.07 (tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel) in chapter 73 (articles of iron or steel).

### Where are goods of heading 73.07 classified when 7307.99 doesn’t fit?

Other goods of heading 73.07 are classified under 7307.11 (cast fittings, of non-malleable cast iron), 7307.19 (cast fittings, other), 7307.21 (other, of stainless steel, flanges), 7307.22 (other, of stainless steel, threaded elbows, bends or sleeves) and 5 others.

### Which countries’ tariffs list national lines under HS code 7307.99?

National tariff lines under 7307.99 are live on border.bot for the United States (5 lines, also used by 1 other country).

## Sources and updates

The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.

This page was last updated on 11 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.

Machine-readable: https://border.bot/hs-codes/730799.json