Tandom · Duty calculator
HTS 7303.00.00.30 is the U.S. Harmonized Tariff Schedule classification for Soil pipe. 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. 8 Chapter 99 tariff modifications currently stack on top of the base rate, and 2 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% |
| 9903.80.61 | section_232 | The duty provided in the applicable subheading + 25% |
| 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% |
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.
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.
Source: CBP CROSS (view all rulings on rulings.cbp.gov →)
HTS 7303.00.00.30 is the U.S. Harmonized Tariff Schedule classification for Soil pipe. It belongs to Chapter 73 of the HTSUS.
The general (Column 1) duty rate for HTS 7303.00.00.30 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 7303.00.00.30 is 33%. 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 7303.00.00.30 is covered by section_232 provision 9903.80.01 (The duty provided in the applicable subheading + 25%). 7 additional overlays also touch this code. Open the code page for the full overlay stack with effective dates and country scopes.
Yes — 2 AD/CVD orders flag this code: A-570-079 (AD, China), C-570-080 (CVD, China). 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.
In this chapter, the expression 'cast iron' applies to products obtained by casting in which iron predominates by weight over each of the other elements and which do not comply with the chemical composition of steel as defined in note 1(d) to chapter 72.
Tandom guides relevant to this code
What changed April 6, 2026, what stayed the same, and how to file a steel, aluminum, or copper line in ACE without leaving duty exposure on the table.
Open resource
How to subscribe to CBP Cargo Systems Messaging Service and triage the messages that change broker filing behavior, without losing the ones that matter.
Open resource
How to read, order, and report Chapter 99 HTS codes alongside the base classification on a US entry summary in 2026. The full stacking ladder for brokers and compliance teams.
Open resource
A working guide to the inputs, the layers, and the math behind a US entry summary in 2026. Written for brokers, forwarders, and importer compliance teams.
Open resource
Where trade compliance APIs fit in a broker's filing pipeline: HTS classification, duty calculation, AD/CVD scope match, and post-summary corrections.
Open resource
Drop the Tandom Duty Calculator API into a TMS, broker software, or in-house ERP. Code samples, the response shape, and ACE reporting order, in 2026.
Open resource