Chapter 73 HS Codes: Chapter 73 Commodities
CHAPTER DEFINITION & SCOPE
HS Chapter 73 of the WCO Harmonized System covers chapter 73 commodities. It groups 26 4-digit WCO headings and 124 6-digit subheadings under the official 2026 customs nomenclature [USITC HTS 2026].
Chapter
Ch 73
Headings
26 Headings
Subheadings
124 HS6
US Tariff Status
Active 2026
Chapter 73 4-Digit Headings Directory
| Heading | WCO Heading Description | Subheading Count | Directory Link |
|---|---|---|---|
| Heading 7301 | Sheet piling of iron or steel, whether or not drilled, punched or made from assembled elements; welded angles, shapes and sections, of iron or steel | 2 subheadings | Browse Heading 7301 → |
| Heading 7302 | Railway 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 | 4 subheadings | Browse Heading 7302 → |
| Heading 7303 | Tubes, pipes and hollow profiles, of cast iron | 1 subheadings | Browse Heading 7303 → |
| Heading 7304 | Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel | 13 subheadings | Browse Heading 7304 → |
| Heading 7305 | Other tubes and pipes (for example, welded, riveted or similarly closed), having circular cross sections, the external diameter of which exceeds |
7 subheadings | Browse Heading 7305 → |
| Heading 7306 | Other tubes, pipes and hollow profiles (for example, open seamed or welded, riveted or similarly closed), of iron or steel | 10 subheadings | Browse Heading 7306 → |
| Heading 7307 | Tube or pipe fittings (for example, couplings, elbows, sleeves), of iron or steel | 10 subheadings | Browse Heading 7307 → |
| Heading 7308 | Structures (excluding prefabricated buildings of heading 9406) and parts of structures (for example, bridges and bridge sections, lock gates, towers, lattice masts, roofs, roofing frameworks, doors and windows and their frames and thresholds for doors, shutters, balustrades, pillars and columns) of iron or steel; plates, rods, angles, shapes, sections, tubes and the like, prepared for use in structures, of iron or steel | 5 subheadings | Browse Heading 7308 → |
| Heading 7309 | Reservoirs, tanks, vats and similar containers for any material (other than compressed or liquefied gas), of iron or steel, of a capacity exceeding |
1 subheadings | Browse Heading 7309 → |
| Heading 7310 | Tanks, casks, drums, cans, boxes and similar containers, for any material (other than compressed or liquefied gas), of iron or steel, of a capacity not exceeding |
3 subheadings | Browse Heading 7310 → |
| Heading 7311 | Containers for compressed or liquefied gas, of iron or steel | 1 subheadings | Browse Heading 7311 → |
| Heading 7312 | Stranded wire, ropes, cables, plaited bands, slings and the like, of iron or steel, not electrically insulated | 2 subheadings | Browse Heading 7312 → |
| Heading 7313 | Barbed wire of iron or steel; twisted hoop or single flat wire, barbed or not, and loosely twisted double wire, of a kind used for fencing, of iron or steel | 1 subheadings | Browse Heading 7313 → |
| Heading 7314 | Cloth (including endless bands), grill, netting and fencing, of iron or steel wire; expanded metal of iron or steel | 10 subheadings | Browse Heading 7314 → |
| Heading 7315 | Chain and parts thereof, of iron or steel | 8 subheadings | Browse Heading 7315 → |
| Heading 7316 | Anchors, grapnels and parts thereof, of iron or steel | 1 subheadings | Browse Heading 7316 → |
| Heading 7317 | Nails, tacks, drawing pins, corrugated nails, staples (other than those of heading 8305) and similar articles, of iron or steel, whether or not with heads of other material, but excluding such articles with heads of copper | 1 subheadings | Browse Heading 7317 → |
| Heading 7318 | Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel | 12 subheadings | Browse Heading 7318 → |
| Heading 7319 | Sewing needles, knitting needles, bodkins, crochet hooks, embroidery stilettos and similar articles for use in the hand, of iron or steel; safety pins and other pins of iron or steel, not elsewhere specified or included | 2 subheadings | Browse Heading 7319 → |
| Heading 7320 | Springs and leaves for springs, of iron or steel | 3 subheadings | Browse Heading 7320 → |
| Heading 7321 | Stoves, ranges, grates, cookers (including those with subsidiary boilers for central heating), barbecues, braziers, gas rings, plate warmers and similar nonelectric domestic appliances, and parts thereof, of iron or steel | 7 subheadings | Browse Heading 7321 → |
| Heading 7322 | Radiators for central heating, not electrically heated, and parts thereof, of iron or steel; air heaters and hot air distributors (including distributors which can also distribute fresh or conditioned air), not electrically heated, incorporating a motor-driven fan or blower, and parts thereof, of iron or steel | 3 subheadings | Browse Heading 7322 → |
| Heading 7323 | Table, kitchen or other household articles and parts thereof, of iron or steel; iron or steel wool; pot scourers and scouring or polishing pads, gloves and the like, of iron or steel | 6 subheadings | Browse Heading 7323 → |
| Heading 7324 | Sanitary ware and parts thereof, of iron or steel | 4 subheadings | Browse Heading 7324 → |
| Heading 7325 | Other cast articles of iron or steel | 3 subheadings | Browse Heading 7325 → |
| Heading 7326 | Other articles of iron or steel | 4 subheadings | Browse Heading 7326 → |
Chapter 73 Subheading Sample & MFN Duty Rates
| HS Code | Subheading Description | Heading | Action |
|---|---|---|---|
| 7301.10 | Sheet piling | 7301 | View 7301.10 → |
| 7301.20 | Angles, shapes and sections | 7301 | View 7301.20 → |
| 7302.10 | Rails | 7302 | View 7302.10 → |
| 7302.30 | Switch blades, crossing frogs, point rods and other crossing pieces | 7302 | View 7302.30 → |
| 7302.40 | Fish-plates and sole plates | 7302 | View 7302.40 → |
| 7302.90 | Other | 7302 | View 7302.90 → |
| 7303.00 | Tubes, pipes and hollow profiles, of cast iron | 7303 | View 7303.00 → |
| 7304.11 | Line pipe of a kind used for oil or gas pipelines, Of stainless steel | 7304 | View 7304.11 → |
| 7304.19 | Line pipe of a kind used for oil or gas pipelines, Other | 7304 | View 7304.19 → |
| 7304.22 | Casing, tubing and drill pipe, of a kind used in drilling for oil or gas, Drill pipe of stainless steel | 7304 | View 7304.22 → |
| 7304.23 | Casing, tubing and drill pipe, of a kind used in drilling for oil or gas, Other drill pipe | 7304 | View 7304.23 → |
| 7304.24 | Casing, tubing and drill pipe, of a kind used in drilling for oil or gas, Other, of stainless steel | 7304 | View 7304.24 → |
| 7304.29 | Casing, tubing and drill pipe, of a kind used in drilling for oil or gas, Other | 7304 | View 7304.29 → |
| 7304.31 | Other, of circular cross section, of iron or nonalloy steel, Cold-drawn or cold-rolled (cold-reduced) | 7304 | View 7304.31 → |
| 7304.39 | Other, of circular cross section, of iron or nonalloy steel, Other | 7304 | View 7304.39 → |
EXPERT CLASSIFICATION PRO TIPS
Common Pitfalls When Classifying Chapter 73 Goods
- Always review WCO Section and Chapter Legal Notes before assigning 4-digit headings.
- Distinguish carefully between unprocessed raw materials and further prepared or processed articles.
- Verify Partner Government Agency (PGA) flags for agriculture, food, or chemical items.
- Cross-reference official CBP CROSS rulings for binding precedents on mixed or composite goods.
Official Primary Sources & Authority References
USITC HTS Chapter 73 Tariff ↗
United States International Trade Commission official Harmonized Tariff Schedule.
CBP CROSS Rulings ↗
Customs Rulings Online Search System for Chapter 73 binding classification precedents.
WCO HS Nomenclature ↗
World Customs Organization international 6-digit Harmonized System backbone standard.
U.S. Census Foreign Trade ↗
U.S. Census Bureau trade statistics and Schedule B concordance portal.
Chapter 73 Frequently Asked Questions (FAQ)
What commodities are covered under HS Chapter 73?
Chapter 73 (Chapter 73 Commodities) covers WCO Harmonized System 4-digit headings from 7301 upward, encompassing primary goods, raw materials, and manufactured articles within this nomenclature section.
How many 4-digit headings exist in HS Chapter 73?
Chapter 73 contains 26 official 4-digit WCO headings and 124 6-digit tariff subheadings.
What is the US general import duty range for Chapter 73 commodities?
Base customs duties under Chapter 73 range from 0.0% (Duty-Free) up to representative MFN rate limits depending on 10-digit HTS statistical suffix extensions.
Do Section 301 China tariffs apply to Chapter 73 imports?
Section 301 tariffs depend on specific 8-digit HTS subheadings. Importers must verify if their exact HTS code appears on USTR Lists 1 through 4A.
Are Partner Government Agency (PGA) permits required for Chapter 73?
PGA message-set flags (such as FDA, USDA APHIS, EPA, or CITES) apply conditionally depending on the commodity classification within Chapter 73.
How are products classified between adjacent headings in Chapter 73?
Classification follows WCO General Rules of Interpretation (GRI) 1 through 6, prioritizing specific heading terms over general descriptions.
Can Chapter 73 goods enter duty-free under USMCA or Free Trade Agreements?
Yes. Eligible goods originating in USMCA member states (US, Mexico, Canada) or FTA partners enter duty-free under SPI code P, KR, AU, or CL with a valid Certificate of Origin.
What is the Section 321 de minimis limit for Chapter 73 shipments?
Eligible commercial shipments valued at $800 USD or less imported by one person on one day may enter duty-free under 19 U.S.C. 1321.
What documents are required for formal entry of Chapter 73 goods?
Commercial Invoice, Packing List, Bill of Lading/Air Waybill, and entry summary CBP Form 7501 are mandatory for entries exceeding $2,500 USD.
How can an importer obtain a binding CBP ruling for Chapter 73?
Importers may submit an e-Ruling application under 19 CFR Part 177 to CBP National Commodity Specialist Division.