{
  "summary": "In the United States tariff, line 7002.31.00.00 covers tubes, of fused quartz or other fused silica. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 7002.31 in heading 70.02 (chapter 70).",
  "updatedAt": "2026-10-09",
  "facts": [
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      "label": "Tariff line",
      "value": "7002.31.00.00",
      "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false"
    },
    {
      "label": "Covers",
      "value": "Tubes, of fused quartz or other fused silica",
      "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false"
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      "value": "Free",
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      "label": "Additional duties",
      "value": "None recorded",
      "source": null
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      "label": "Restrictions",
      "value": "None recorded",
      "source": null
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      "question": "What does tariff line 7002.31.00.00 cover in the United States tariff?",
      "answer": "In the United States tariff, line 7002.31.00.00 covers tubes, of fused quartz or other fused silica."
    },
    {
      "question": "What is the general (MFN) duty on 7002.31.00.00 in the United States?",
      "answer": "Goods under this line enter free of general (MFN) duty."
    }
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  "sections": [
    {
      "id": "covers",
      "title": "What this line covers",
      "text": [
        "In the United States tariff, line 7002.31.00.00 covers tubes, of fused quartz or other fused silica.",
        "Its legal text is “Of fused quartz or other fused silica”, read under “Tubes”."
      ]
    },
    {
      "id": "structure",
      "title": "How it is structured",
      "text": [
        "It falls under HS subheading 7002.31 in heading 70.02 (chapter 70). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff."
      ]
    },
    {
      "id": "duty",
      "title": "Duty",
      "text": [
        "Goods under this line enter free of general (MFN) duty."
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    {
      "id": "other-countries",
      "title": "In other countries",
      "text": [
        "No other national tariff on border.bot has live lines under 7002.31 yet."
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    },
    {
      "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."
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    "dateModified": "2026-10-09T21:15:58.040Z",
    "chapter": {
      "code": "70",
      "description": "Glass and glassware"
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    "heading": {
      "code": "7002",
      "description": "Glass in balls (other than microspheres of heading 7018), rods or tubes, unworked"
    },
    "subheading": {
      "code": "700231",
      "description": "Tubes: Of fused quartz or other fused silica"
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    "line": {
      "code": "7002310000",
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        "code": "7002310000",
        "dutyText": "Free",
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        "unit": null
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      "description": "Other",
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      "code": "7002320000",
      "description": "Of other glass having a linear coefficient of expansion not exceeding 5 x 10-6 per Kelvin within a temperature range of 0˚C to 300˚C",
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  "code": "7002310000",
  "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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