{
  "summary": "The United States tariff splits HS 7305.31 (other, welded: Longitudinally welded) into 4 national lines: 7305.31.20.00 (tapered pipes and tubes of steel principally used as parts of illuminating articles), 7305.31.40.00 (of iron or nonalloy steel), 7305.31.60.10 (of stainless steel) and 7305.31.60.90 (other). Every United States line under 7305.31 is free of general (MFN) duty.",
  "updatedAt": "2026-10-09",
  "facts": [
    {
      "label": "HS subheading",
      "value": "7305.31",
      "source": null,
      "url": "https://border.bot/hs-codes/730531"
    },
    {
      "label": "Duty (MFN)",
      "value": "Free",
      "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false"
    },
    {
      "label": "National lines",
      "value": "4",
      "source": null
    },
    {
      "label": "Tariff",
      "value": "United States",
      "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false",
      "url": "https://border.bot/countries/united-states"
    },
    {
      "label": "Chapter",
      "value": "73: Articles of iron or steel",
      "source": null
    }
  ],
  "faq": [
    {
      "question": "How many national tariff lines does the United States tariff have under HS 7305.31?",
      "answer": "The United States tariff splits HS 7305.31 (other, welded: Longitudinally welded) into 4 national lines: 7305.31.20.00 (tapered pipes and tubes of steel principally used as parts of illuminating articles), 7305.31.40.00 (of iron or nonalloy steel), 7305.31.60.10 (of stainless steel) and 7305.31.60.90 (other)."
    },
    {
      "question": "What is the duty on HS 7305.31 in the United States?",
      "answer": "Every United States line under 7305.31 is free of general (MFN) duty."
    }
  ],
  "sections": [
    {
      "id": "covers",
      "title": "United States lines under 7305.31",
      "text": [
        "The United States tariff splits HS 7305.31 (other, welded: Longitudinally welded) into 4 national lines: 7305.31.20.00 (tapered pipes and tubes of steel principally used as parts of illuminating articles), 7305.31.40.00 (of iron or nonalloy steel), 7305.31.60.10 (of stainless steel) and 7305.31.60.90 (other).",
        "Every United States line under 7305.31 is free of general (MFN) duty."
      ]
    },
    {
      "id": "other-countries",
      "title": "In other countries",
      "text": [
        "No other national tariff on border.bot has live lines under 7305.31 yet."
      ]
    },
    {
      "id": "sources",
      "title": "Sources and updates",
      "text": [
        "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."
      ]
    }
  ],
  "data": {
    "type": "country-subheading",
    "country": {
      "code": "US",
      "name": "United States",
      "slug": "united-states"
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    "schedule": {
      "code": "US",
      "name": "United States",
      "slug": "united-states"
    },
    "borrowed": false,
    "localTaxes": [],
    "localDeminimis": [],
    "ratesLive": true,
    "provenance": [
      {
        "dataset": "US:hs",
        "country": "US",
        "kind": "hs",
        "seq": 1,
        "version": "2026HTSRev21",
        "liveAt": "2026-10-09T21:15:50.043Z",
        "origin": "source",
        "sourceUrls": [
          "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false"
        ]
      },
      {
        "dataset": "US:rates",
        "country": "US",
        "kind": "rates",
        "seq": 1,
        "version": "2026HTSRev21",
        "liveAt": "2026-10-09T21:15:36.287Z",
        "origin": "source",
        "sourceUrls": [
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      },
      {
        "dataset": "US:programmes",
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        "kind": "programmes",
        "seq": 1,
        "version": "2026HTSRev21",
        "liveAt": "2026-10-09T21:15:58.040Z",
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    "dateModified": "2026-10-09T21:15:58.040Z",
    "chapter": {
      "code": "73",
      "description": "Articles of iron or steel"
    },
    "heading": {
      "code": "7305",
      "description": "Other tubes and pipes (for example, welded, riveted or similarly closed), having circular cross sections, the external diameter of which exceeds 406.4 mm, of iron or steel"
    },
    "subheading": {
      "code": "730531",
      "description": "Other, welded: Longitudinally welded"
    },
    "lines": [
      {
        "code": "7305312000",
        "description": "Tapered pipes and tubes of steel principally used as parts of illuminating articles",
        "levels": [
          "Other, welded",
          "Longitudinally welded",
          "Tapered pipes and tubes of steel principally used as parts of illuminating articles"
        ],
        "english": null,
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        "general": {
          "code": "7305312000",
          "dutyText": "Free",
          "startDate": null,
          "endDate": null,
          "unit": null
        },
        "preferences": [],
        "measures": [],
        "restrictions": []
      },
      {
        "code": "7305314000",
        "description": "Of iron or nonalloy steel",
        "levels": [
          "Other, welded",
          "Longitudinally welded",
          "Other",
          "Of iron or nonalloy steel"
        ],
        "english": null,
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        "general": {
          "code": "7305314000",
          "dutyText": "Free",
          "startDate": null,
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        "measures": [],
        "restrictions": []
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          "Longitudinally welded",
          "Other",
          "Of alloy steel",
          "Of stainless steel"
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        "english": null,
        "keywords": [],
        "lang": "en",
        "general": {
          "code": "73053160",
          "dutyText": "Free",
          "startDate": null,
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        "preferences": [],
        "measures": [],
        "restrictions": []
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        "code": "7305316090",
        "description": "Other",
        "levels": [
          "Other, welded",
          "Longitudinally welded",
          "Other",
          "Of alloy steel",
          "Other"
        ],
        "english": null,
        "keywords": [],
        "lang": "en",
        "general": {
          "code": "73053160",
          "dutyText": "Free",
          "startDate": null,
          "endDate": null,
          "unit": null
        },
        "preferences": [],
        "measures": [],
        "restrictions": []
      }
    ],
    "previous": {
      "code": "730520",
      "description": "Casing of a kind used in drilling for oil or gas",
      "indexable": true
    },
    "next": {
      "code": "730539",
      "description": "Other",
      "indexable": true
    },
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    "pages": 1,
    "size": 100,
    "total": 4,
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  "next": "https://border.bot/countries/united-states/hs-codes/730539",
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  "code": "730531",
  "attribution": "border.bot tariff reference (border.bot), compiled from the official publishers named on each page.",
  "terms": "https://border.bot/legal/terms",
  "notice": "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.",
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}