U.S. exports of Forged or Stamped Grinding Balls and Similar Mill Articles of Iron or Steel (HS 732611) totaled $2.5M in August 2026.
Importers of Forged or Stamped Grinding Balls and Similar Mill Articles of Iron or Steel paid $284K in duties in August 2026, an average duty rate of 42.92% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Forged or Stamped Grinding Balls and Similar Mill Articles of Iron or Steel imports of $661K in August 2026 ran 47% below the year-to-date monthly average of $1.3M.
Last updated: August 2026 dataForged and stamped grinding balls for ball mills and similar comminution equipment are distinguished from their cast counterparts by a manufacturing process that produces a denser, more uniform microstructure — a performance advantage in high-impact milling applications such as hard-rock mining. All such articles enter under a single 10-digit line (7326110000). Canada leads US imports of this heading, followed by China and Indonesia, with India and Taiwan also supplying the market.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
18 import shipments a month
A manufacturer's process declaration or mill certificate confirming that the balls were produced by forging or stamping — rather than casting — is the primary supporting document. Metallurgical test reports showing grain structure consistent with forging can provide additional support. This documentation is important because the forged (7326.11) and cast (7325.91) provisions carry different tariff treatment, and CBP may request evidence of the manufacturing method during a CF-28 or CF-29 inquiry.
Canadian-origin forged grinding balls may qualify for USMCA preferential duty treatment if they satisfy the applicable Chapter 73 rules of origin, typically requiring a tariff classification change from the steel input or meeting a regional value content threshold. Importers should obtain a USMCA certification of origin from their Canadian supplier and confirm that the forging operation in Canada constitutes sufficient transformation under the agreement's rules.
ImportsExports
Imports
$661KYoY · free account
Exports
$2.5MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $13.9M of Forged or Stamped Grinding Balls and Similar Mill Articles of Iron or Steel and exported $30.9M.
Through August 2026. Source: U.S. Census Bureau.
Subheading 4 of 4 in heading 7326
Subheading 732611 · $2.5M of $597.9M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 7326110000 | Grndng Bls A SIM Artic Fr Mills Frgd/Stmpd of Ios | $661K | 42.92% | 100.00% | $284K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7326110000 | Grndng Bls A SIM Artic Fr Mills Frgd/Stmpd of Ios | $2.5M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Exports · August 2026
destination
Mexico and Canada together take 74% of it.
customs district
origin
entry
rate provision · imports
duty collected equals 42.92% of imports for consumption.
Trade Directory
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