# United States tariff lines under HS 7304.23

> The United States tariff splits HS 7304.23 (casing, tubing and drill pipe, of a kind used in drilling for oil or gas: Other drill pipe) into 4 national lines: 7304.23.30.00 (of iron or nonalloy steel), 7304.23.60.30 (having a wall thickness not exceeding 9.5 mm), 7304.23.60.45 (having a wall thickness exceeding 9.5 mm) and 7304.23.60.60 (having an outside diameter exceeding 168.3 mm). Every United States line under 7304.23 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/730423
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) / [7304.23](https://border.bot/countries/united-states/hs-codes/730423)

## Key facts

- HS subheading: [7304.23](https://border.bot/hs-codes/730423)
- Duty (MFN): Free
- National lines: 4
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 73: Articles of iron or steel

## United States lines under 7304.23

The United States tariff splits HS 7304.23 (casing, tubing and drill pipe, of a kind used in drilling for oil or gas: Other drill pipe) into 4 national lines: 7304.23.30.00 (of iron or nonalloy steel), 7304.23.60.30 (having a wall thickness not exceeding 9.5 mm), 7304.23.60.45 (having a wall thickness exceeding 9.5 mm) and 7304.23.60.60 (having an outside diameter exceeding 168.3 mm).

Every United States line under 7304.23 is free of general (MFN) duty.

- [7304.23.30.00](https://border.bot/countries/united-states/hs-codes/7304233000) Casing, tubing and drill pipe, of a kind used in drilling for oil or gas, Other drill pipe, Of iron or nonalloy steel. Duty (MFN): free
- [7304.23.60.30](https://border.bot/countries/united-states/hs-codes/7304236030) Casing, tubing and drill pipe, of a kind used in drilling for oil or gas, Other drill pipe, Of alloy steel, Having an outside diameter not exceeding 168.3 mm, Having a wall thickness not exceeding 9.5 mm. Duty (MFN): free
- [7304.23.60.45](https://border.bot/countries/united-states/hs-codes/7304236045) Casing, tubing and drill pipe, of a kind used in drilling for oil or gas, Other drill pipe, Of alloy steel, Having an outside diameter not exceeding 168.3 mm, Having a wall thickness exceeding 9.5 mm. Duty (MFN): free
- [7304.23.60.60](https://border.bot/countries/united-states/hs-codes/7304236060) Casing, tubing and drill pipe, of a kind used in drilling for oil or gas, Other drill pipe, Of alloy steel, Having an outside diameter exceeding 168.3 mm. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 7304.23 yet.

- [The Harmonized System text for 7304.23](https://border.bot/hs-codes/730423)

- Previous subheading: [7304.22](https://border.bot/countries/united-states/hs-codes/730422) Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel
- Next subheading: [7304.24](https://border.bot/countries/united-states/hs-codes/730424) Other, of stainless steel

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 7304.23?

The United States tariff splits HS 7304.23 (casing, tubing and drill pipe, of a kind used in drilling for oil or gas: Other drill pipe) into 4 national lines: 7304.23.30.00 (of iron or nonalloy steel), 7304.23.60.30 (having a wall thickness not exceeding 9.5 mm), 7304.23.60.45 (having a wall thickness exceeding 9.5 mm) and 7304.23.60.60 (having an outside diameter exceeding 168.3 mm).

### What is the duty on HS 7304.23 in the United States?

Every United States line under 7304.23 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/730423.json