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HSChapter 73
U.S. imports of cast articles of nonmalleable cast iron (nesoi) (HS 732510) totaled $12.8M in April 2026, traded with 35 countries.
Importers of Cast Articles of Nonmalleable Cast Iron (NESOI) paid $4.3M in duties in April 2026 — an effective duty rate of 38% on $11.5M in dutiable value, based on actual customs collections rather than the published tariff schedule. Cast Articles of Nonmalleable Cast Iron (NESOI) imports of $12.8M in April 2026 ran 18% below the year-to-date monthly average of $15.6M.
Last updated: April 2026 dataNonmalleable (gray) cast iron castings not elsewhere specified include a broad range of municipal infrastructure and utility products: manhole covers, catch basin grates, cleanout covers, valve boxes, and meter boxes each have dedicated 10-digit lines (7325100010 through 7325100035), with a residual line (7325100080) for other articles. These products are critical inputs for water, sewer, and stormwater infrastructure projects, and procurement is often subject to Buy America requirements under federal grant programs. India leads US imports, followed by China and Mexico.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Yes. Federal infrastructure grant programs — including those administered under the Infrastructure Investment and Jobs Act — typically impose Buy America requirements mandating that iron and steel products used in covered projects be produced in the United States. Imported cast iron manhole covers, grates, and frames would generally not satisfy these requirements unless a waiver is granted. Importers and project owners should review the specific grant terms and consult legal counsel before specifying imported castings on federally funded work.
The schedule provides dedicated lines for manhole covers, rings, and frames (7325100010); catch basin grates and frames (7325100020); cleanout covers and frames (7325100025); valve and service boxes (7325100030); and meter boxes (7325100035). All other nonmalleable cast iron articles not elsewhere specified fall under 7325100080. Correct line selection depends on the specific function of the casting, not just its shape.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 7325100080 | OTHER NONMALLEABLE CAST IRON; NESOI | $6.4M | 43.91% | $2.2M |
| 7325100010 | MANHOLE COVERS, RINGS A FRAMES, NONMALBL CAST IRON | $2.2M | 27.11% | $575K |
| 7325100030 | NONMALLEABLE CAST IRON, VALVE AND SERVICE BOXES | $2.0M | 36.01% | $724K |
| 7325100020 | NONMALLEABLE CAST IRON CATCH BASIN, GRATE, FRAME | $1.5M | 39.99% | $615K |
| 7325100035 | METER BOXES OF NONMALLEABLE CAST IRON | $528K | 20.37% | $106K |
| 7325100025 | NONMALLEABLE CAST IRON, CLEANOUT COVERS AND FRAME | $217K | 32.91% | $72K |
OTHER NONMALLEABLE CAST IRON; NESOI
MANHOLE COVERS, RINGS A FRAMES, NONMALBL CAST IRON
NONMALLEABLE CAST IRON, VALVE AND SERVICE BOXES
NONMALLEABLE CAST IRON CATCH BASIN, GRATE, FRAME
METER BOXES OF NONMALLEABLE CAST IRON
NONMALLEABLE CAST IRON, CLEANOUT COVERS AND FRAME
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7325100000 | CAST ARTICLES NESOI OF NONMALLEABLE CAST IRON | $3.4M |
CAST ARTICLES NESOI OF NONMALLEABLE CAST IRON
781.1K kg
ARTICLES OF IRON OR STEEL NESOI
HS 732690
STRUCTURES AND PARTS NESOI OF IRON OR STEEL
HS 730890
THREADED SCREWS AND BOLTS NESOI OF IRON OR STEEL
HS 731815
COOKING APPLIANCES ETC FOR GAS FUEL, IRON OR STEEL
HS 732111
NUTS OF IRON OR STEEL
HS 731816
TABLE, KITCHEN ETC ARTICLES & PTS, STAINLESS STEEL
HS 732393
| State | Imports | Exports | Balance |
|---|---|---|---|
| California | $2.1M | $21K | -$2.0M |
| Texas | $1.7M | $85K | -$1.6M |
| Wisconsin | $1.2M | $188K | -$1.0M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NORFOLK-NEWPORT NEWS, VA | $2.3M | -- | -$2.3M |
| NEWARK, NJ | $1.4M | $20K | -$1.4M |
| LOS ANGELES, CA | $1.4M | -- | -$1.4M |