HTS 7303.00.00 — rate composition
Base rate and applicable layers for this code, with an embedded calculator.
HTS 7303.00.00 (Tubes, pipes and hollow profiles, of cast iron) carries an MFN general rate of Free on U.S. imports; China-origin entries additionally stack Section 232 steel articles (50%) + Global Section 301 (CN, excluded). Example (origin CN · $10,000 · sea formal entry): duties + fees ≈ $5,047.14.Data as of 2026-10-07 (ruleset v0.3.4).
Tubes, pipes and hollow profiles, of cast iron
USITC: Free
Duty layers
| Layer | Rate | Amount | Basis |
|---|---|---|---|
Base duty (MFN) Active | Free | $0.00 | HTS Column 1 general rate ↗ |
Section 232 steel articles (50%) Active | 50% | $5,000.00 | Trade Expansion Act 1962 §232 (steel articles 50% from 2025-06-04; HTS anchors 9903.81 series + derivative iron/steel articles 9903.82.02 & .04–.26 with metal-content rules; chapter-level scope is sector-indicative, proclamation Annex prevails) ↗ |
Global Section 301 (CN, excluded) In litigation | Exempt | $0.00 | Exclusion / exemption provision ↗ |
| Harbor Maintenance Fee (HMF) | 0.125% | $12.50 | 26 U.S.C. §4461 / 19 CFR 24.24 (sea & water shipments only) |
| Merchandise Processing Fee (MPF) | 0.3464% (once per entry, min $34.58 / max $670.86) | $34.64 | 19 U.S.C. §58c, FY2027 (from 2026-10-01) |
Example: origin CN · $10,000 · sea formal entry · date 2026-10-07
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U.S. full regime: MFN + 301 + 232 + MPF/HMF
Selected: Tubes, pipes and hollow profiles, of cast iron · Base Free
FAQ
What is the U.S. import tariff rate for HTS 7303.00.00?
HTS 7303.00.00 (Tubes, pipes and hollow profiles, of cast iron) carries an MFN general rate of Free on U.S. imports; China-origin entries additionally stack Section 232 steel articles (50%) + Global Section 301 (CN, excluded). Example (origin CN · $10,000 · sea formal entry): duties + fees ≈ $5,047.14.Data as of 2026-10-07 (ruleset v0.3.4).
Do MPF/HMF fees apply to HTS 7303.00.00?
Yes. Fees are not duties and are charged per entry: Harbor Maintenance Fee (HMF) 0.125%; Merchandise Processing Fee (MPF) 0.3464% (once per entry, min $34.58 / max $670.86). ≈ $47.14 on the $10,000 formal-entry example; postal shipments ≤$2,500 use informal entry with fixed fees instead.
How does HTS 7303.00.00 differ from an HS code and Schedule B?
All three share the same root: HS is the World Customs Organization's 6-digit international baseline; HTS is the 10-digit U.S. import classification (first 6 digits identical to HS — 7303.00.00 on this page is shown at the 8-digit HTS level); Schedule B is the U.S. export code (first 6 digits match HTS, with Census-specific 8–10 digit suffixes). Use this HTS code for U.S. import duty, and Schedule B when exporting from the U.S. Full comparison: /en/guides/hts-vs-hs-vs-schedule-b
Related codes in Chapter 73 · Articles of iron or steel
- 7302.10.10Railway or tramway track construction material of iron or steel, the following: rails, check-rails and rack rails, switch blades, crossing frogs, point rods and other crossing pieces, sleepers (cross-ties), fish-plates, chairs, chair wedges, sole plates (base plates), rail clips, bedplates, ties and other material specialized for jointing or fixing rails: — Rails: — Of iron or nonalloy steel
- 7302.10.50Railway or tramway track construction material of iron or steel, the following: rails, check-rails and rack rails, switch blades, crossing frogs, point rods and other crossing pieces, sleepers (cross-ties), fish-plates, chairs, chair wedges, sole plates (base plates), rail clips, bedplates, ties and other material specialized for jointing or fixing rails: — Rails: — Of alloy steel
- 7304.11.00Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: — Line pipe of a kind used for oil or gas pipelines: — Of stainless steel
- 7304.19.10Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: — Line pipe of a kind used for oil or gas pipelines: — Other: — Of iron or nonalloy steel
- 7304.19.50Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: — Line pipe of a kind used for oil or gas pipelines: — Other: — Of other alloy steel
- 7304.22.00Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: — Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: — Drill pipe of stainless steel
- 7304.23.60Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: — Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: — Other drill pipe: — Of alloy steel
- 7304.24.30Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: — Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: — Other, of stainless steel: — Casing: — Threaded or coupled
- 7304.24.40Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: — Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: — Other, of stainless steel: — Casing: — Other
- 7304.24.60Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: — Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: — Other, of stainless steel: — Tubing
- 7304.29.10Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: — Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: — Other: — Casing: — Of iron or nonalloy steel: — Threaded or coupled
- 7304.29.20Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: — Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: — Other: — Casing: — Of iron or nonalloy steel: — Other
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