{
  "summary": "HS code 4009.21 covers reinforced or otherwise combined only with metal, without fittings. It sits in heading 40.09 (tubes, pipes and hoses, of vulcanised rubber other than hard rubber, with or without their fittings (for example, joints, elbows, flanges)) in chapter 40 (rubber and articles thereof). Other goods of heading 40.09 are classified under 4009.11 (not reinforced or otherwise combined with other materials, without fittings), 4009.12 (not reinforced or otherwise combined with other materials, with fittings), 4009.22 (reinforced or otherwise combined only with metal, with fittings), 4009.31 (reinforced or otherwise combined only with textile materials, without fittings) or 3 others. National tariff lines under 4009.21 are live on border.bot for the United States (1 line, also used by 1 other country).",
  "updatedAt": "2026-10-11",
  "facts": [
    {
      "label": "HS code",
      "value": "4009.21",
      "source": "border.bot release GLOBAL:hs #2"
    },
    {
      "label": "Covers",
      "value": "Reinforced or otherwise combined only with metal, without fittings",
      "source": "border.bot release GLOBAL:hs #2"
    },
    {
      "label": "Heading",
      "value": "40.09: Tubes, pipes and hoses, of vulcanised rubber other than hard rubber, with or without their fittings (for example, joints, elbows, flanges)",
      "source": "border.bot release GLOBAL:hs #2",
      "url": "https://border.bot/hs-codes/4009"
    },
    {
      "label": "Chapter",
      "value": "40: Rubber and articles thereof",
      "source": "border.bot release GLOBAL:hs #2",
      "url": "https://border.bot/hs-codes/40"
    },
    {
      "label": "Edition",
      "value": "HS2022",
      "source": "border.bot release GLOBAL:hs #2"
    },
    {
      "label": "Duty in the United States",
      "value": "See its 1 line",
      "source": null,
      "url": "https://border.bot/countries/united-states/hs-codes/400921"
    }
  ],
  "faq": [
    {
      "question": "What does HS code 4009.21 cover?",
      "answer": "HS code 4009.21 covers reinforced or otherwise combined only with metal, without fittings."
    },
    {
      "question": "Which heading and chapter is HS code 4009.21 in?",
      "answer": "HS code 4009.21 is in heading 40.09 (tubes, pipes and hoses, of vulcanised rubber other than hard rubber, with or without their fittings (for example, joints, elbows, flanges)) in chapter 40 (rubber and articles thereof)."
    },
    {
      "question": "Where are goods of heading 40.09 classified when 4009.21 doesn’t fit?",
      "answer": "Other goods of heading 40.09 are classified under 4009.11 (not reinforced or otherwise combined with other materials, without fittings), 4009.12 (not reinforced or otherwise combined with other materials, with fittings), 4009.22 (reinforced or otherwise combined only with metal, with fittings), 4009.31 (reinforced or otherwise combined only with textile materials, without fittings) or 3 others."
    },
    {
      "question": "Which countries’ tariffs list national lines under HS code 4009.21?",
      "answer": "National tariff lines under 4009.21 are live on border.bot for the United States (1 line, also used by 1 other country)."
    }
  ],
  "sections": [
    {
      "id": "covers",
      "title": "What this code covers",
      "text": [
        "HS code 4009.21 covers reinforced or otherwise combined only with metal, without fittings.",
        "The legal text of the subheading is “Reinforced or otherwise combined only with metal: Without fittings”, read under “Reinforced or otherwise combined only with metal”, in HS2022."
      ]
    },
    {
      "id": "not-covered",
      "title": "What it doesn’t cover",
      "text": [
        "Other goods of heading 40.09 are classified under 4009.11 (not reinforced or otherwise combined with other materials, without fittings), 4009.12 (not reinforced or otherwise combined with other materials, with fittings), 4009.22 (reinforced or otherwise combined only with metal, with fittings), 4009.31 (reinforced or otherwise combined only with textile materials, without fittings) or 3 others."
      ]
    },
    {
      "id": "structure",
      "title": "How it is structured",
      "text": [
        "4009.21 is a six-digit subheading. Its first two digits, 40, are the chapter; the first four, 4009, are heading 40.09; the last two, 21, identify the subheading within the heading.",
        "Countries add their own digits after these six for their national tariff lines."
      ]
    },
    {
      "id": "other-countries",
      "title": "In other countries",
      "text": [
        "National tariff lines under 4009.21 are live on border.bot for the United States (1 line, also used by 1 other country)."
      ]
    },
    {
      "id": "sources",
      "title": "Sources and updates",
      "text": [
        "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."
      ]
    }
  ],
  "data": {
    "type": "hs-subheading",
    "edition": "HS2022",
    "chapter": {
      "code": "40",
      "description": "Rubber and articles thereof"
    },
    "heading": {
      "code": "4009",
      "description": "Tubes, pipes and hoses, of vulcanised rubber other than hard rubber, with or without their fittings (for example, joints, elbows, flanges)"
    },
    "subheading": {
      "code": "400921",
      "description": "Reinforced or otherwise combined only with metal: Without fittings",
      "levels": [
        "Reinforced or otherwise combined only with metal",
        "Without fittings"
      ],
      "english": null,
      "keywords": []
    },
    "siblings": [
      {
        "code": "400911",
        "description": "Not reinforced or otherwise combined with other materials: Without fittings"
      },
      {
        "code": "400912",
        "description": "Not reinforced or otherwise combined with other materials: With fittings"
      },
      {
        "code": "400922",
        "description": "Reinforced or otherwise combined only with metal: With fittings"
      },
      {
        "code": "400931",
        "description": "Reinforced or otherwise combined only with textile materials: Without fittings"
      },
      {
        "code": "400932",
        "description": "Reinforced or otherwise combined only with textile materials: With fittings"
      },
      {
        "code": "400941",
        "description": "Reinforced or otherwise combined with other materials: Without fittings"
      },
      {
        "code": "400942",
        "description": "Reinforced or otherwise combined with other materials: With fittings"
      }
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    "related": [],
    "previous": {
      "code": "400912",
      "description": "Not reinforced or otherwise combined with other materials: With fittings",
      "indexable": true
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      "description": "Reinforced or otherwise combined only with metal: With fittings",
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    "schedules": [
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        "code": "US",
        "name": "United States",
        "slug": "united-states",
        "lines": 1,
        "members": 1
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    ],
    "provenance": [
      {
        "dataset": "GLOBAL:hs",
        "country": "GLOBAL",
        "kind": "hs",
        "seq": 2,
        "version": "mytraddal hs2022.csv (HS 2022)",
        "liveAt": "2026-10-11T06:04:17.693Z",
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    "size": 100,
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  "code": "400921",
  "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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