HS Code 7303.00 : Tubes, pipes and hollow profiles, of cast iron
MODULE 2: EXTRACTABLE ANSWER (AEO / SPEAKABLE)
Tariff data verified: July 2026
EN (Official WCO)
FR (Pending)
ES (Pending)
The 6-digit Harmonized System (HS) code for tubes, pipes and hollow profiles, of cast iron is 7303.00. Under the 2026 United States (USITC HTS), the representative MFN general duty rate is Free [USITC HTS Tariff Schedule 2026].
MODULE 3: SIGNATURE A: HS DECODE VISUAL HIERARCHY
Subheading .00
.00
Tubes, pipes and hollow profiles, of cast iron
MODULE 4: SIGNATURE B: TARIFF MATRIX
Import Duty Rates by Destination
United StatesUnited KingdomEuropean UnionCanadaMexicoChinaJapanIndiaAustraliaSouth KoreaGermanyNetherlandsBrazilTürkiyeChinese TaipeiVietnamThailandIndonesiaMalaysiaSingaporeSaudi ArabiaUnited Arab EmiratesSouth AfricaEgyptIsraelChileColombiaPeruPhilippinesPakistanNew ZealandNorwayNigeriaKenyaMoroccoArgentinaEcuadorBangladeshUkraineKazakhstanQatarKuwaitOmanJordanBahrainSri LankaTunisiaGhanaCôte d'IvoireGeorgiaCambodiaPanamaCosta RicaDominican Republic
United States (USITC HTS 2026)
7303.00.00
MODULE 5: US IMPORT DUTY & FEE BREAKDOWN (LANDED COST STACK)
Federal Import VAT / GST
0.00%
US Has NO Federal VAT
Notice: Duty rates and trade remedies change frequently (Section 301, Section 232, anti-dumping orders, de minimis thresholds). Duty calculations are estimates for informational purposes only. Always verify exact rates with U.S. Customs and Border Protection (CBP) or a licensed customs broker prior to import.
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MODULE 6: Mandatory Customs Entry Document Matrix
Rule-Derived Customs Entry Package Checklist
UNIVERSAL DOCUMENT
Commercial Invoice
Itemized description, currency, Incoterms, seller/buyer details, and country of origin.
UNIVERSAL DOCUMENT
Packing List & Bill of Lading
Gross/net weight, container/seal numbers, piece count, and transport B/L or Air Waybill.
PREFERENTIAL RULE
Certificate of Origin (If Claiming FTA)
Required only when claiming zero-duty preference under USMCA, KORUS, or GSP.
MODULE 7: Regulatory Compliance & Partner Government Agency (PGA) Flags
Standard Entry
This commodity does not carry mandatory PGA pre-clearance flags under the ACE message set.
MODULE 8: Trade Remedies (Section 301, Section 232, AD/CVD)
China Section 301 Tariff Status
0% Additional Duty (Exempt)
Section 232 Steel/Aluminum Status
25% Additional Duty (Proclamation 9704)
EU CBAM Carbon Alert
EU CBAM Covered Sector
MODULE 9: Free Trade Agreements (FTA) & Rules of Origin (RoO)
Browse all preferential trade calculators & compliance tools in our Customs Tools Hub ↗.
| Agreement Code | Trade Agreement / Program | Preferential Rate | Rules of Origin (RoO) Requirement |
|---|---|---|---|
| P | United States-Mexico-Canada Agreement (USMCA) | Free | Must meet USMCA Regional Value Content (RVC) or tariff shift rules. |
| KR | U.S.-Korea Free Trade Agreement (KORUS) | Free | Direct shipment from South Korea with KORUS Certificate of Origin. |
| AU | U.S.-Australia Free Trade Agreement | Free | Wholly obtained or tariff shift rule under US-Australia FTA. |
| A / D | GSP / African Growth & Opportunity Act (AGOA) | Free | 35% local value-add requirement for beneficiary country origin. |
MODULE 10: Logistics, Freight & Transport Specifications
Standard 20ft Container
~28 CBM / 28,000 kg Payload
Standard 40ft High-Cube
~68 CBM / 28,600 kg Payload
Stowage Factor & Handling
Standard commercial packaging for Tubes, pipes and hollow profiles, of cast iron
MODULE 11: Official CBP CROSS Binding Classification Rulings
No official CBP CROSS classification precedents indexed for subheading 730300 yet.
US National HTS Tariff Lines (7303.00)
| HTS Code | Description | General Rate | Special (FTA) Rate | Column 2 Rate | Unit |
|---|---|---|---|---|---|
| 7303.00.00 | Tubes, pipes and hollow profiles, of cast iron | Free | Free | 33% | — |
| 7303.00.00.30 | Tubes, pipes and hollow profiles, of cast iron, Soil pipe | Free | Free | Rate on request | kg |
| 7303.00.00.60 | Tubes, pipes and hollow profiles, of cast iron, Pressure pipe with an inside diameter of less than |
Free | Free | Rate on request | kg |
| 7303.00.00.90 | Tubes, pipes and hollow profiles, of cast iron, Other | Free | Free | Rate on request | kg |
⚠️ U.S. AD/CVD Trade-Remedy Alert
2 Active Orders
HS 7303.00 appears in the scope of 2 active U.S. Antidumping/Countervailing Duty order(s) — covering Cast Iron Soil Pipe from China (Commerce case(s) A-570-079, C-570-080). Scope is defined by written product description, and duty rates are exporter-specific.
Explore all 724 covered orders in the U.S. AD/CVD Trade Remedies Directory ↗. Verify exact scope at access.trade.gov and view the Active AD/CVD Directory. Not legal advice. Per-code scope flags cover the 437 highest-volume HS6 subheadings (724 of 778 active orders; 93% coverage); coverage expanding.
US 10-Digit Statistical HTS Breakout (7303.00)
3 Declarable Lines · USITC 2026| 10-Digit HTS Code | Statistical Description | General MFN Rate | FTA / Special Rate | Unit |
|---|---|---|---|---|
| 7303.00.00.30 | Tubes, pipes and hollow profiles, of cast iron Soil pipe | Free | Base MFN | kg |
| 7303.00.00.60 | Tubes, pipes and hollow profiles, of cast iron Pressure pipe with an inside diameter of less than 356 mm | Free | Base MFN | kg |
| 7303.00.00.90 | Tubes, pipes and hollow profiles, of cast iron Other | Free | Base MFN | kg |
MODULE 12: Candidate Subheadings & Related Codes
| Related HS Code | Heading Category | Action |
|---|---|---|
| 7303.10 | Subheading under Heading 7303 | HS 7303.10 undefined Duty & Entry Rules → |
| 7303.20 | Subheading under Heading 7303 | HS 7303.20 undefined Duty & Entry Rules → |
| 7303.90 | Subheading under Heading 7303 | HS 7303.90 undefined Duty & Entry Rules → |
MODULE 13: Industry Classification & Crosswalk Mesh (NAICS & Schedule B)
U.S. Census NAICS Code
U.S. Census Schedule B (Exports)
Official Primary Sources & Authority References
USITC HTS Chapter 73 Tariff Schedule (2026) ↗
Official U.S. 10-digit tariff lines and general duty rates for Tubes, pipes and hollow profiles, of cast iron.
CBP CROSS Ruling Database (7303.00) ↗
Binding customs classification precedents for Heading 7303.
MODULE 14: Frequently Asked Questions (FAQ) & Operational Guide
Is HS Code 7303.00 subject to U.S. Antidumping or Countervailing (AD/CVD) duties?
Yes. HS Code 7303.00 (Tubes, pipes and hollow profiles, of cast iron) falls within the product scope of 2 active U.S. Department of Commerce AD/CVD order(s), including Cast Iron Soil Pipe from China (Commerce case(s) A-570-079, C-570-080). Importers must verify exact product scope and their foreign manufacturer's exporter-specific duty deposit rate on Commerce's ACCESS portal (access.trade.gov) prior to U.S. Customs entry.
Is HS Code 7303.00 subject to U.S. Antidumping or Countervailing (AD/CVD) duties?
Yes. HS Code 7303.00 (Tubes, pipes and hollow profiles, of cast iron) falls within the product scope of 2 active U.S. Department of Commerce AD/CVD order(s), including Cast Iron Soil Pipe from China (Commerce case(s) A-570-079, C-570-080). Importers must verify exact product scope and their foreign manufacturer's exporter-specific duty deposit rate on Commerce's ACCESS portal (access.trade.gov) prior to U.S. Customs entry.
Is HS Code 7303.00 subject to U.S. Antidumping or Countervailing (AD/CVD) duties?
Yes. HS Code 7303.00 (Tubes, pipes and hollow profiles, of cast iron) falls within the product scope of 2 active U.S. Department of Commerce AD/CVD order(s), including Cast Iron Soil Pipe from China (Commerce case(s) A-570-079, C-570-080). Importers must verify exact product scope and their foreign manufacturer's exporter-specific duty deposit rate on Commerce's ACCESS portal (access.trade.gov) prior to U.S. Customs entry.
What is the 6-digit WCO tariff classification and United States (USITC HTS) general duty for Tubes, pipes and hollow profiles, of cast iron?
Under WCO Harmonized System 2022 and United States (USITC HTS), Tubes, pipes and hollow profiles, of cast iron is classified under HS 7303.00 (Heading 7303, Chapter 73). The representative US MFN general duty rate is Free.
How is HS 7303.00 distinguished within Heading 7303 (Tubes, pipes and hollow profiles, of cast iron)?
Heading 7303 covers Tubes, pipes and hollow profiles, of cast iron. Subheading 7303.00 specifically isolates Tubes, pipes and hollow profiles, of cast iron. Importers must verify whether physical characteristics, processing state, or composition require alternative subheadings under Heading 7303.
What are the primary candidate subheadings related to HS 7303.00?
Related subheadings under Heading 7303 include . Classification depends on processing stage, decaffeination, purity, or material form.
What mandatory commercial entry documents are required to import Tubes, pipes and hollow profiles, of cast iron?
Commercial Invoice (detailing Incoterms, currency, and origin), Packing List, Bill of Lading (or Air Waybill), CBP Form 7501 Entry Summary, and a continuous customs bond are required for formal entries.
Can goods under HS 7303.00 enter duty-free under USMCA or Free Trade Agreements?
Yes. Eligible goods originating in Mexico, Canada, South Korea, or Australia enter duty-free under preference SPI codes (P, KR, AU) provided they satisfy Regional Value Content (RVC) or tariff-shift rules with a valid Certificate of Origin.
What is the US formal entry threshold for shipments of Tubes, pipes and hollow profiles, of cast iron?
Commercial shipments of Tubes, pipes and hollow profiles, of cast iron with a customs value exceeding $2,500 USD require formal customs entry (CBP Form 7501) and a continuous entry bond. Informal entry applies to lower values.
How can an importer obtain a binding CBP classification ruling for HS 7303.00?
Importers may submit an e-Ruling request under 19 CFR Part 177 to CBP National Commodity Specialist Division (NCSD) to obtain a legally binding tariff classification ruling prior to importation.
Are Section 232 tariffs applicable to steel/aluminum imports under HS 7303.00?
Yes. Products in Chapter 73 are subject to Presidential Section 232 trade remedies (Proclamation 9704). Steel articles generally incur an additional 25% ad valorem duty unless covered by an official Commerce Department exclusion or tariff-rate quota (TRQ).
What U.S. Census NAICS industry code corresponds to HS 7303.00?
HS 7303.00 maps to NAICS code 331511 (Foundries) under official U.S. Census Bureau trade concordance tables.
Does the United States assess federal VAT or GST on imports of HS 7303.00?
No. The United States does NOT charge a federal Value-Added Tax (VAT) or Goods and Services Tax (GST) on imports. Importers pay customs duty + MPF + HMF (if ocean freight).
How are Merchandise Processing Fee (MPF) and Harbor Maintenance Fee (HMF) calculated?
MPF is assessed at 0.3464% of entered value (min $32.71, max $634.62 per entry). HMF is assessed at 0.125% on ocean freight shipments entering US ports.
What is the Section 321 de minimis duty-free threshold for HS 7303.00?
Under Section 321 (19 U.S.C. 1321), eligible shipments valued at $800 USD or less imported by one person on one day enter duty-free and tax-free.
What U.S. Customs bond requirements apply to commercial entries under HS 7303.00?
Formal entries with customs value exceeding $2,500 USD require a continuous customs entry bond (CBP Form 301) to guarantee payment of duties, taxes, and fees.
What Importer Security Filing (ISF 10+2) rules apply to ocean imports of HS 7303.00?
Ocean container shipments bound for US ports require electronic ISF 10+2 submission via ACE at least 24 hours before loading at foreign ports.
How do USMCA preference rules apply to commercial imports under HS 7303.00?
Qualifying originating goods from Canada or Mexico meeting USMCA tariff-shift or Regional Value Content (RVC) rules enter duty-free under SPI code 'P'.
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