# United States tariff line 7306.29.31.00: Threaded or coupled

> In the United States tariff, line 7306.29.31.00 covers casing and tubing of a kind used in drilling for oil or gas, casing, threaded or coupled. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 7306.29 in heading 73.06 (chapter 73).

Source: https://border.bot/countries/united-states/hs-codes/7306293100
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) / [7306.29](https://border.bot/countries/united-states/hs-codes/730629) / [7306.29.31.00](https://border.bot/countries/united-states/hs-codes/7306293100)

## Key facts

- Tariff line: 7306.29.31.00
- Covers: Casing and tubing of a kind used in drilling for oil or gas, casing, threaded or coupled
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [7306.29](https://border.bot/hs-codes/730629)

## What this line covers

In the United States tariff, line 7306.29.31.00 covers casing and tubing of a kind used in drilling for oil or gas, casing, threaded or coupled.

Its legal text is “Threaded or coupled”, read under “Casing and tubing of a kind used in drilling for oil or gas”, “Other”, “Casing” and “Other”.

## How it is structured

It falls under HS subheading 7306.29 in heading 73.06 (chapter 73). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.

- Chapter 73: Articles of iron or steel
- Heading 73.06: Other tubes, pipes and hollow profiles (for example, open seamed or welded, riveted or similarly closed), of iron or steel
- Subheading 7306.29: Casing and tubing of a kind used in drilling for oil or gas
- Within the subheading: Other
- Within the subheading: Casing
- Within the subheading: Other
- Line 7306.29.31.00: Threaded or coupled

## Duty

Goods under this line enter free of general (MFN) duty.

## In other countries

No other national tariff on border.bot has live lines under 7306.29 yet.

- [The Harmonized System text for 7306.29](https://border.bot/hs-codes/730629)

## Other lines under 7306.29

- [7306.29.10.30](https://border.bot/countries/united-states/hs-codes/7306291030) Imported with coupling
- [7306.29.10.90](https://border.bot/countries/united-states/hs-codes/7306291090) Other
- [7306.29.20.00](https://border.bot/countries/united-states/hs-codes/7306292000) Other
- [7306.29.41.00](https://border.bot/countries/united-states/hs-codes/7306294100) Other
- [7306.29.60.10](https://border.bot/countries/united-states/hs-codes/7306296010) Imported with coupling
- [7306.29.60.50](https://border.bot/countries/united-states/hs-codes/7306296050) Other
- [7306.29.81.10](https://border.bot/countries/united-states/hs-codes/7306298110) Imported with coupling
- [7306.29.81.50](https://border.bot/countries/united-states/hs-codes/7306298150) Other

- Previous line: [7306.29.20.00](https://border.bot/countries/united-states/hs-codes/7306292000) Other
- Next line: [7306.29.41.00](https://border.bot/countries/united-states/hs-codes/7306294100) Other

## Frequently asked questions

### What does tariff line 7306.29.31.00 cover in the United States tariff?

In the United States tariff, line 7306.29.31.00 covers casing and tubing of a kind used in drilling for oil or gas, casing, threaded or coupled.

### What is the general (MFN) duty on 7306.29.31.00 in the United States?

Goods under this line enter 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/7306293100.json