# HS code 7304.51: Other, of circular cross-section, of other alloy steel, cold-drawn or cold-rolled (cold-reduced) > HS code 7304.51 covers other, of circular cross-section, of other alloy steel, cold-drawn or cold-rolled (cold-reduced). It sits in heading 73.04 (tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel) in chapter 73 (articles of iron or steel). Other goods of heading 73.04 are classified under 7304.11 (line pipe of a kind used for oil or gas pipelines, of stainless steel), 7304.19 (line pipe of a kind used for oil or gas pipelines, other), 7304.22 (casing, tubing and drill pipe, of a kind used in drilling for oil or gas, drill pipe of stainless steel), 7304.23 (casing, tubing and drill pipe, of a kind used in drilling for oil or gas, other drill pipe) or 8 others. National tariff lines under 7304.51 are live on border.bot for the United States (5 lines, also used by 1 other country). Source: https://border.bot/hs-codes/730451 Last updated: 11 October 2026 [HS codes](https://border.bot/hs-codes) / [Chapter 73](https://border.bot/hs-codes/73) / [73.04](https://border.bot/hs-codes/7304) / [7304.51](https://border.bot/hs-codes/730451) ## Key facts - HS code: 7304.51 - Covers: Other, of circular cross-section, of other alloy steel, cold-drawn or cold-rolled (cold-reduced) - Heading: [73.04: Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel](https://border.bot/hs-codes/7304) - 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/730451) ## What this code covers HS code 7304.51 covers other, of circular cross-section, of other alloy steel, cold-drawn or cold-rolled (cold-reduced). The legal text of the subheading is “Other, of circular cross-section, of other alloy steel: Cold-drawn or cold-rolled (cold-reduced)”, read under “Other, of circular cross-section, of other alloy steel”, in HS2022. ## What it doesn’t cover Other goods of heading 73.04 are classified under 7304.11 (line pipe of a kind used for oil or gas pipelines, of stainless steel), 7304.19 (line pipe of a kind used for oil or gas pipelines, other), 7304.22 (casing, tubing and drill pipe, of a kind used in drilling for oil or gas, drill pipe of stainless steel), 7304.23 (casing, tubing and drill pipe, of a kind used in drilling for oil or gas, other drill pipe) or 8 others. - [7304.11](https://border.bot/hs-codes/730411) Line pipe of a kind used for oil or gas pipelines: Of stainless steel - [7304.19](https://border.bot/hs-codes/730419) Line pipe of a kind used for oil or gas pipelines: Other - [7304.22](https://border.bot/hs-codes/730422) Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: Drill pipe of stainless steel - [7304.23](https://border.bot/hs-codes/730423) Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: Other drill pipe - [7304.24](https://border.bot/hs-codes/730424) Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: Other, of stainless steel - [7304.29](https://border.bot/hs-codes/730429) Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: Other - [7304.31](https://border.bot/hs-codes/730431) Other, of circular cross-section, of iron or non-alloy steel: Cold-drawn or cold-rolled (cold-reduced) - [7304.39](https://border.bot/hs-codes/730439) Other, of circular cross-section, of iron or non-alloy steel: Other - [7304.41](https://border.bot/hs-codes/730441) Other, of circular cross-section, of stainless steel: Cold-drawn or cold-rolled (cold-reduced) - [7304.49](https://border.bot/hs-codes/730449) Other, of circular cross-section, of stainless steel: Other - [7304.59](https://border.bot/hs-codes/730459) Other, of circular cross-section, of other alloy steel: Other - [7304.90](https://border.bot/hs-codes/730490) Other ## How it is structured 7304.51 is a six-digit subheading. Its first two digits, 73, are the chapter; the first four, 7304, are heading 73.04; the last two, 51, 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 73.04: Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel - Within the heading: Other, of circular cross-section, of other alloy steel - Subheading 7304.51: Cold-drawn or cold-rolled (cold-reduced) ## In other countries National tariff lines under 7304.51 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/730451): 5 lines, used by 1 other country - Previous subheading: [7304.49](https://border.bot/hs-codes/730449) Other, of circular cross-section, of stainless steel: Other - Next subheading: [7304.59](https://border.bot/hs-codes/730459) Other, of circular cross-section, of other alloy steel: Other ## Frequently asked questions ### What does HS code 7304.51 cover? HS code 7304.51 covers other, of circular cross-section, of other alloy steel, cold-drawn or cold-rolled (cold-reduced). ### Which heading and chapter is HS code 7304.51 in? HS code 7304.51 is in heading 73.04 (tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel) in chapter 73 (articles of iron or steel). ### Where are goods of heading 73.04 classified when 7304.51 doesn’t fit? Other goods of heading 73.04 are classified under 7304.11 (line pipe of a kind used for oil or gas pipelines, of stainless steel), 7304.19 (line pipe of a kind used for oil or gas pipelines, other), 7304.22 (casing, tubing and drill pipe, of a kind used in drilling for oil or gas, drill pipe of stainless steel), 7304.23 (casing, tubing and drill pipe, of a kind used in drilling for oil or gas, other drill pipe) or 8 others. ### Which countries’ tariffs list national lines under HS code 7304.51? National tariff lines under 7304.51 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/730451.json