U.S. imports of Iron & Steel Towers and Lattice Masts (HS 730820) totaled $70.4M in August 2026, imported from 26 countries.
Importers of Iron & Steel Towers and Lattice Masts paid $26.3M in duties in August 2026, an average duty rate of 37.37% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataTowers and lattice masts of iron or steel encompass transmission line towers, telecommunications masts, and — critically — tubular wind turbine towers, which have their own dedicated 10-digit line (7308200035) reflecting the sector's trade significance. Denmark and Germany lead US imports under this heading, consistent with their dominant roles in wind energy equipment manufacturing. Wind turbine towers have been subject to antidumping and countervailing duty investigations, making origin verification and scope rulings a recurring compliance issue for energy developers. Section 232 tariffs also apply to these steel structures, compounding the duty exposure for large-scale renewable energy procurements.
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209 import shipments a month
Yes. Utility-scale wind towers have been the subject of antidumping and countervailing duty orders covering certain countries of origin. Importers should check the current scope of any active orders with CBP or the International Trade Commission before sourcing, as scope rulings can affect whether a specific tower design and origin combination is covered.
Tubular towers are hollow cylindrical or conical steel sections stacked to form a self-supporting column, as used in wind turbines and some telecom applications. Lattice masts are open-frame structures assembled from angle, bar, or tube members. The US schedule provides separate lines for tubular towers (including wind turbine towers) and a residual line for other towers and lattice masts, so the structural form of the article determines the correct 10-digit code.
ImportsExports
Imports
$70.4MYoY · free account
Exports
$7.8MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $970.9M of Iron & Steel Towers and Lattice Masts and exported $25.5M.
Through August 2026. Source: U.S. Census Bureau.
Subheading 2 of 5 in heading 7308
Subheading 730820 · $70.4M of $515.1M
Trade Directory
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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 |
|---|---|---|---|---|---|
| 7308200035 | Tubular Wind Turbine Towers of Iron or Steel | $41.4M | 50.00% | 100.00% | $20.7M |
| 7308200030 | Towers and Lattice Masts of Iron or Steel, Tubular | $16.9M | 0.32% | 100.00% | $54K |
| 7308200090 | Towers and Lattice Masts of Iron or Steel, NESOI | $12.2M | 45.88% | 89.44% | $5.6M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7308200000 | Towers and Lattice Masts of Iron or Steel | $7.8M |
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.
Imports · August 2026
origin
Denmark and Germany together supply 60% of it. Denmark pays 50.0% duty; Germany <0.1%.
customs district
destination
entry
rate provision · imports
1.8% enters free of duty; duty collected equals 37.37% of imports for consumption.