# United States tariff line 7306.30.50.90: Other > In the United States tariff, line 7306.30.50.90 covers other, welded, of circular cross section, of iron or nonalloy steel, having a wall thickness of 1.65 mm or more, with an outside diameter exceeding 114.3 mm but not exceeding 406.4 mm. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 7306.30 in heading 73.06 (chapter 73). Source: https://border.bot/countries/united-states/hs-codes/7306305090 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) / [7306.30](https://border.bot/countries/united-states/hs-codes/730630) / [7306.30.50.90](https://border.bot/countries/united-states/hs-codes/7306305090) ## Key facts - Tariff line: 7306.30.50.90 - Covers: Other, welded, of circular cross section, of iron or nonalloy steel, having a wall thickness of 1.65 mm or more, with an outside diameter exceeding 114.3 mm but not exceeding 406.4 mm - Duty (MFN): Free - Additional duties: None recorded - Restrictions: None recorded - Tariff: [United States](https://border.bot/countries/united-states) - HS subheading: [7306.30](https://border.bot/hs-codes/730630) ## What this line covers In the United States tariff, line 7306.30.50.90 covers other, welded, of circular cross section, of iron or nonalloy steel, having a wall thickness of 1.65 mm or more, with an outside diameter exceeding 114.3 mm but not exceeding 406.4 mm. Its legal text is “Other”, read under “Other, welded, of circular cross section, of iron or nonalloy steel”, “Having a wall thickness of 1.65 mm or more”, “Other”, “Other” and “With an outside diameter exceeding 114.3 mm but not exceeding 406.4 mm”. ## How it is structured It falls under HS subheading 7306.30 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 7306.30: Other, welded, of circular cross section, of iron or nonalloy steel - Within the subheading: Having a wall thickness of 1.65 mm or more - Within the subheading: Other - Within the subheading: Other - Within the subheading: With an outside diameter exceeding 114.3 mm but not exceeding 406.4 mm - Line 7306.30.50.90: Other ## Duty Goods under this line enter free of general (MFN) duty. The rate is published on 7306.30.50. ## In other countries No other national tariff on border.bot has live lines under 7306.30 yet. - [The Harmonized System text for 7306.30](https://border.bot/hs-codes/730630) ## Other lines under 7306.30 - [7306.30.10.10](https://border.bot/countries/united-states/hs-codes/7306301010) Internally coated or lined with a non-electrically insulating material, suitable for use as electrical conduit - [7306.30.10.90](https://border.bot/countries/united-states/hs-codes/7306301090) Other - [7306.30.30.00](https://border.bot/countries/united-states/hs-codes/7306303000) Tapered steel pipes and tubes principally used as parts of illuminating articles - [7306.30.50.10](https://border.bot/countries/united-states/hs-codes/7306305010) Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, whether or not cold drawn - [7306.30.50.15](https://border.bot/countries/united-states/hs-codes/7306305015) Other, cold-drawn - [7306.30.50.20](https://border.bot/countries/united-states/hs-codes/7306305020) Other, cold-rolled (cold-reduced) with a wall thickness not exceeding 2.54 mm - [7306.30.50.26](https://border.bot/countries/united-states/hs-codes/7306305026) With an outside diameter not exceeding 50.8 mm - [7306.30.50.27](https://border.bot/countries/united-states/hs-codes/7306305027) With an outside diameter exceeding 50.8 mm but not exceeding 114.3 mm - [7306.30.50.28](https://border.bot/countries/united-states/hs-codes/7306305028) Internally coated or lined with a non-electrically insulating material, suitable for use as electrical conduit - [7306.30.50.31](https://border.bot/countries/united-states/hs-codes/7306305031) With an outside diameter not exceeding 50.8 mm - [7306.30.50.33](https://border.bot/countries/united-states/hs-codes/7306305033) With an outside diameter exceeding 50.8 mm but not exceeding 114.3 mm - [7306.30.50.35](https://border.bot/countries/united-states/hs-codes/7306305035) Tube and pipe hollows for redrawing - [7306.30.50.41](https://border.bot/countries/united-states/hs-codes/7306305041) With an outside diameter not exceeding 50.8 mm - [7306.30.50.43](https://border.bot/countries/united-states/hs-codes/7306305043) With an outside diameter exceeding 50.8 mm but not exceeding 114.3 mm - [7306.30.50.56](https://border.bot/countries/united-states/hs-codes/7306305056) With an outside diameter not exceeding 50.8 mm - [7306.30.50.57](https://border.bot/countries/united-states/hs-codes/7306305057) With an outside diameter exceeding 50.8 mm but not exceeding 114.3 mm - [7306.30.50.85](https://border.bot/countries/united-states/hs-codes/7306305085) Galvanized - Previous line: [7306.30.50.85](https://border.bot/countries/united-states/hs-codes/7306305085) Galvanized - Next line: [7306.40.10.10](https://border.bot/countries/united-states/hs-codes/7306401010) Containing more than 1.5 percent but less than 5 percent by weight of molybdenum ## Frequently asked questions ### What does tariff line 7306.30.50.90 cover in the United States tariff? In the United States tariff, line 7306.30.50.90 covers other, welded, of circular cross section, of iron or nonalloy steel, having a wall thickness of 1.65 mm or more, with an outside diameter exceeding 114.3 mm but not exceeding 406.4 mm. ### What is the general (MFN) duty on 7306.30.50.90 in the United States? Goods under this line enter free of general (MFN) duty. The rate is published on 7306.30.50. ## 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/7306305090.json