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HTS 7304.31.30.00 is the U.S. Harmonized Tariff Schedule classification for Hollow bars. It's a 10-digit statistical line in Chapter 73: Articles of iron or steel, Section XV: Base Metals and Articles of Base Metal, used by U.S. Customs and Border Protection to determine the duty rate at entry. 18 Chapter 99 tariff modifications currently stack on top of the base rate, and 15 active AD/CVD orders flag this code.
New to HTS codes? Read our guide on how HTS classification works →
Chapter 99 overlays that stack on the base rate
| Code | Authority | Rate |
|---|---|---|
| 9903.80.01 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.80.24 | section_232 | Free |
| 9903.80.25 | section_232 | Free |
| 9903.80.61 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.80.84 | section_232 | Free |
| 9903.80.85 | section_232 | Free |
| 9903.81.44 | section_232 | Free |
| 9903.81.45 | section_232 | Free |
| 9903.81.83 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.81.85 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.81.87 | section_232 | The duty provided in the applicable subheading + 50%. |
| 9903.81.88 | section_232 | The duty provided in the applicable subheading + 50%. |
| 9903.81.94 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.81.95 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.82.02 | section_232 | 50% |
| 9903.82.04 | section_232 | 25% |
| 9903.82.18 | section_232 | no change |
| 9903.91.01 | section_301 | The duty provided in the applicable subheading + 25% |
Active orders that may apply to imports under this HTS code. HTS coverage is advisory — actual scope depends on each order's product description. Run the AD/CVD lookup → to check whether your specific shipment is in scope.
Cold-Drawn Mechanical Tubing
Brass Sheet and Strip
Cold-Drawn Mechanical Tubing
Cold-Drawn Mechanical Tubing
Brass Sheet and Strip
Certain Seamless Carbon and Alloy Steel, Standard, Line and Pressure Pipe
Cold-Drawn Mechanical Tubing of Carbon and Alloy Steel
Stainless Steel Bar
Cold-Drawn Mechanical Tubing
Cold-Drawn Mechanical Tubing
Certain Small Diameter Carbon and Alloy Seamless Standard, Line, and Pressure Pipe
Small Diameter Carbon and Alloy Seamless Standard, Line and Pressure Pipe
Carbon and Alloy Seamless Standard, Line, and Pressure Pipe (Under 4 ½ inches)
Cold-Drawn Mechanical Tubing of Carbon and Alloy Steel
Cold-Drawn Mechanical Tubing
Past CBP decisions classifying real products under this HTS code. Useful precedent when classifying a similar product — each ruling shows how CBP interpreted the code for a specific case.
Affirmation of NY N308564; Classification of Threaded Hollow Bars
The tariff classification, country of origin, and applicability of trade programs of a self-drilling hollow bar and coupler from Austria and a clay bit from China
Source: CBP CROSS (view all rulings on rulings.cbp.gov →)
HTS 7304.31.30.00 is the U.S. Harmonized Tariff Schedule classification for Hollow bars. It belongs to Chapter 73 of the HTSUS.
The general (Column 1) duty rate for HTS 7304.31.30.00 is Free. This is the most-favored-nation (MFN) rate that applies to imports from World Trade Organization member countries.
The Column 2 rate for HTS 7304.31.30.00 is 22%. This rate applies to imports from countries that do not have normal trade relations with the United States (currently Cuba and North Korea).
Yes — HTS 7304.31.30.00 is covered by section_232 provision 9903.80.01 (The duty provided in the applicable subheading + 25%). 17 additional overlays also touch this code. Open the code page for the full overlay stack with effective dates and country scopes.
Yes — 15 AD/CVD orders flag this code: A-441-801 (AD, Switzerland), A-122-601 (AD, Brazil), A-475-838 (AD, Italy) plus 12 more. Open the code page for deposit rates, scope determinations, and the linked case lookups.
Section and chapter notes that govern this code
Throughout this schedule, the expression 'base metals' means: iron and steel, copper, nickel, aluminum, lead, zinc, tin, tungsten (wolfram), molybdenum, tantalum, magnesium, cobalt, bismuth, cadmium, titanium, zirconium, antimony, manganese, beryllium, chromium, germanium, vanadium, gallium, hafnium, indium, niobium (columbium), rhenium, and thallium.
Classification of alloys: (a) Alloys of base metals with each other are to be classified as alloys of the metal which predominates by weight over each of the other metals; (b) Alloys of base metals of this section with elements not falling within this section are to be classified as alloys of base metals of this section if the total weight of such metals equals or exceeds the total weight of the other elements present; (c) Sintered mixtures of metal powders, heterogeneous intimate mixtures obtained by melting (other than cermets), and intermetallic compounds are classified as alloys.
(a) 'Iron and nonalloy steel' covers iron and steel containing by weight 2% or less of carbon and, except for certain specific steels, less than designated percentages of chromium, manganese, nickel, and other alloy elements. (b) 'Stainless steel' covers alloy steels containing by weight 1.2% or less of carbon and 10.5% or more of chromium, with or without other elements. (c) 'Other alloy steel' covers steels not meeting the definition of stainless steel containing specific minimum percentages of alloy elements.
In this chapter, the word 'welded' encompasses products obtained by any process of welding, including electric resistance welding, whether or not subsequently cold-drawn or cold-rolled (cold-reduced).
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