HTS heading 7305 · Chapter 73
HTS 7305: Other tubes and pipes, having circular cross sections,…
HTS heading 7305 covers other tubes and pipes (for example, welded, riveted or similarly closed), having circular cross sections, the external diameter of which exceeds 406.4 mm, of iron or steel. It has 17 tariff lines with a duty rate; the general (MFN) rates are Free (17 lines).
Imports may also owe Chapter 99 tariffs (Section 232, 301 or 201) depending on origin and date, plus the Merchandise Processing Fee and, by sea, the Harbor Maintenance Fee.
Rates from the 2026 HTS Revision 22, effective October 30, 2026. Source: U.S. International Trade Commission.
Tariff lines and duty rates
| HTS code | Description | General | Special | Column 2 | Estimate |
|---|---|---|---|---|---|
| Line pipe of a kind used for oil or gas pipelines: | |||||
| 7305.11 | Longitudinally submerged arc welded: | ||||
| 7305.11.10 | Of iron or nonalloy steel | Free | 5.5% | ||
| 7305.11.10.30 | With an external diameter exceeding 406.4 mm but not exceeding 609.6 mm[kg] | Estimate → | |||
| 7305.11.10.60 | With an external diameter exceeding 609.6 mm[kg] | Estimate → | |||
| 7305.11.50.00 | Of alloy steel[kg] | Free | 10% | Estimate → | |
| 7305.12 | Other, longitudinally welded: | ||||
| 7305.12.10 | Of iron or nonalloy steel | Free | 5.5% | ||
| 7305.12.10.30 | With an external diameter exceeding 406.4 mm but not exceeding 609.6 mm[kg] | Estimate → | |||
| 7305.12.10.60 | With an external diameter exceeding 609.6 mm[kg] | Estimate → | |||
| 7305.12.50.00 | Of alloy steel[kg] | Free | 10% | Estimate → | |
| 7305.19 | Other: | ||||
| 7305.19.10 | Of iron or nonalloy steel | Free | 5.5% | ||
| 7305.19.10.30 | With an external diameter exceeding 406.4 mm but not exceeding 609.6 mm[kg] | Estimate → | |||
| 7305.19.10.60 | With an external diameter exceeding 609.6 mm[kg] | Estimate → | |||
| 7305.19.50.00 | Of alloy steel[kg] | Free | 10% | Estimate → | |
| 7305.20 | Casing of a kind used in drilling for oil or gas: | ||||
| Of iron or nonalloy steel: | |||||
| 7305.20.20.00 | Threaded or coupled[kg] | Free | 20% | Estimate → | |
| 7305.20.40.00 | Other[kg] | Free | 1% | Estimate → | |
| Of alloy steel: | |||||
| 7305.20.60.00 | Threaded or coupled[kg] | Free | 28% | Estimate → | |
| 7305.20.80.00 | Other[kg] | Free | 8.5% | Estimate → | |
| Other, welded: | |||||
| 7305.31 | Longitudinally welded: | ||||
| 7305.31.20.00 | Tapered pipes and tubes of steel principally used as parts of illuminating articles[kg] | Free | 45% | Estimate → | |
| Other: | |||||
| 7305.31.40.00 | Of iron or nonalloy steel[kg] | Free | 5.5% | Estimate → | |
| 7305.31.60 | Of alloy steel | Free | 10% | ||
| 7305.31.60.10 | Of stainless steel[kg] | Estimate → | |||
| 7305.31.60.90 | Other[kg] | Estimate → | |||
| 7305.39 | Other: | ||||
| 7305.39.10.00 | Of iron or nonalloy steel[kg] | Free | 5.5% | Estimate → | |
| 7305.39.50.00 | Of alloy steel[kg] | Free | 10% | Estimate → | |
| 7305.90 | Other: | ||||
| 7305.90.10.00 | Of iron or nonalloy steel[kg] | Free | 5.5% | Estimate → | |
| 7305.90.50.00 | Of alloy steel[kg] | Free | 10% | Estimate → |
25 lines shown. Statistical suffixes (the last two digits) inherit the rate of the 8-digit subheading above them.
Example: base duty and fees on $10000
For HTS 7305.11.10 at the general rate of Free, shipped by ocean, before any Chapter 99 tariffs:
| Base duty (Free) | $0.00 |
| Merchandise Processing Fee (0.3464%, min $34.58) | $34.64 |
| Harbor Maintenance Fee (0.125%) | $12.50 |
| Duty and fees | $47.14 |
Origin-specific tariffs can multiply this. Run this example from China or from Mexico to see every line.