# United States tariff line 7307.91.50.30: Of alloy steel (except stainless steel) > In the United States tariff, line 7307.91.50.30 covers flanges, with an inside diameter of less than 360 mm, of alloy steel (except stainless steel). The general (MFN) duty rate is 5.5%. It falls under HS subheading 7307.91 in heading 73.07 (chapter 73). Source: https://border.bot/countries/united-states/hs-codes/7307915030 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) / [7307.91](https://border.bot/countries/united-states/hs-codes/730791) / [7307.91.50.30](https://border.bot/countries/united-states/hs-codes/7307915030) ## Key facts - Tariff line: 7307.91.50.30 - Covers: Flanges, with an inside diameter of less than 360 mm, of alloy steel (except stainless steel) - Duty (MFN): 5.5% - Preferential rates: From free (18 programmes or origins) - Additional duties: None recorded - Restrictions: None recorded - Tariff: [United States](https://border.bot/countries/united-states) - HS subheading: [7307.91](https://border.bot/hs-codes/730791) ## What this line covers In the United States tariff, line 7307.91.50.30 covers flanges, with an inside diameter of less than 360 mm, of alloy steel (except stainless steel). Its legal text is “Of alloy steel (except stainless steel)”, read under “Other”, “Flanges”, “Other” and “With an inside diameter of less than 360 mm”. ## How it is structured It falls under HS subheading 7307.91 in heading 73.07 (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 73.07: Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel - Subheading 7307.91: Other - Within the subheading: Flanges - Within the subheading: Other - Within the subheading: With an inside diameter of less than 360 mm - Line 7307.91.50.30: Of alloy steel (except stainless steel) ## Duty The general (MFN) duty rate is 5.5%. The rate is published on 7307.91.50. Duty-free entry applies to goods that qualify under 16 programmes, and to goods from a group of origins (origin group A*). A preferential rate of 2.75% applies to goods that qualify under Trade Agreement Between the United States and Japan. - Free: a group of origins (origin group A*) (A*) - Free: United States-Australia Free Trade Agreement (AU) - Free: United States-Bahrain Free Trade Agreement Implementation Act (BH) - Free: United States-Chile Free Trade Agreement (CL) - Free: United States-Colombia Trade Promotion Agreement Implementation Act (CO) - Free: African Growth and Opportunity Act (D) - Free: Caribbean Basin Economic Recovery Act (E) - Free: United States-Israel Free Trade Area (IL) - Free: United States-Jordan Free Trade Area Implementation Act (JO) - Free: United States-Korea Free Trade Agreement Implementation Act (KR) - Free: United States-Morocco Free Trade Agreement Implementation Act (MA) - Free: United States-Oman Free Trade Agreement Implementation Act (OM) - Free: Dominican Republic-Central America-United States Free Trade Agreement (P) - Free: United States-Panama Trade Promotion Agreement Implementation Act (PA) - Free: United States-Peru Trade Promotion Agreement Implementation Act (PE) - Free: United States-Mexico-Canada Agreement (S) - Free: United States-Singapore Free Trade Agreement (SG) - 2.75%: Trade Agreement Between the United States and Japan (JP) ## In other countries No other national tariff on border.bot has live lines under 7307.91 yet. - [The Harmonized System text for 7307.91](https://border.bot/hs-codes/730791) ## Other lines under 7307.91 - [7307.91.10.00](https://border.bot/countries/united-states/hs-codes/7307911000) Of iron or nonalloy steel - [7307.91.30.00](https://border.bot/countries/united-states/hs-codes/7307913000) Of alloy steel (except stainless steel) - [7307.91.50.10](https://border.bot/countries/united-states/hs-codes/7307915010) Of iron or nonalloy steel - [7307.91.50.50](https://border.bot/countries/united-states/hs-codes/7307915050) Of iron or nonalloy steel - [7307.91.50.70](https://border.bot/countries/united-states/hs-codes/7307915070) Of alloy steel (except stainless steel) - Previous line: [7307.91.50.10](https://border.bot/countries/united-states/hs-codes/7307915010) Of iron or nonalloy steel - Next line: [7307.91.50.50](https://border.bot/countries/united-states/hs-codes/7307915050) Of iron or nonalloy steel ## Frequently asked questions ### What does tariff line 7307.91.50.30 cover in the United States tariff? In the United States tariff, line 7307.91.50.30 covers flanges, with an inside diameter of less than 360 mm, of alloy steel (except stainless steel). ### What is the general (MFN) duty on 7307.91.50.30 in the United States? The general (MFN) duty rate is 5.5%. The rate is published on 7307.91.50. ### Which preferential rates apply to 7307.91.50.30? Duty-free entry applies to goods that qualify under 16 programmes: the United States-Australia Free Trade Agreement, the United States-Bahrain Free Trade Agreement Implementation Act, the United States-Chile Free Trade Agreement, the United States-Colombia Trade Promotion Agreement Implementation Act, African Growth and Opportunity Act, Caribbean Basin Economic Recovery Act, the United States-Israel Free Trade Area, the United States-Jordan Free Trade Area Implementation Act, the United States-Korea Free Trade Agreement Implementation Act, the United States-Morocco Free Trade Agreement Implementation Act, the United States-Oman Free Trade Agreement Implementation Act, the Dominican Republic-Central America-United States Free Trade Agreement, the United States-Panama Trade Promotion Agreement Implementation Act, the United States-Peru Trade Promotion Agreement Implementation Act, the United States-Mexico-Canada Agreement and the United States-Singapore Free Trade Agreement, and to goods from a group of origins (origin group A*). A preferential rate of 2.75% applies to goods that qualify under Trade Agreement Between the United States and Japan. ## 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/7307915030.json