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HSChapter 73
U.S. imports of iron & steel structures and structural parts (other) (HS 730890) totaled $341.8M in April 2026, traded with 78 countries.
Importers of Iron & Steel Structures and Structural Parts (Other) paid $122.2M in duties in April 2026 — an effective duty rate of 40% on $303.1M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataColumns, pillars, posts, beams, girders, steel grating, sheet-metal roofing and siding, and architectural or ornamental ironwork that do not fall under more specific structural headings are captured here — a broad residual category central to commercial and industrial construction. Mexico and Canada together account for the largest share of US imports, reflecting deep integration in North American construction supply chains, with China, Belgium, and the Netherlands also notable sources. The ten 10-digit lines segment by alloy type, product form (grating, sheet-metal cladding, ornamental work, or general structural members), and machining status. Section 232 tariffs apply across the heading, and Chinese-origin structural steel may also carry Section 301 exposure.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Steel grating — open-grid flooring panels used in industrial platforms, walkways, and drainage covers — has its own dedicated 10-digit line (7308907000) within this heading. It should not be confused with wire mesh or perforated plate, which classify elsewhere in Chapter 73. The bar spacing, load-bearing design, and manufacturing method (welded vs. press-locked) are relevant to confirming the correct classification.
Architectural and ornamental work (7308909060 / 7308909560) covers decorative iron or steel elements — such as railings, grilles, gates, and façade panels — where aesthetic design is a primary feature. Standard structural members like beams and girders are classified in the columns/pillars/posts lines. When an article combines structural and ornamental functions, the essential character and primary use guide the classification decision.
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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 |
|---|---|---|---|---|
| 7308909590 | STRUCTURES AND PARTS ETC NESOI IRON OR STEEL | $245.5M | 42.09% | $92.2M |
| 7308906000 | COLUMNS PILLARS POSTS BEAMS GIRDERS ETC NESOI | $44.0M | 38.40% | $15.1M |
| 7308903000 | COLUMNS PILLARS POSTS BEAMS GIRDERS ETC IRN/NAL ST | $40.2M | 30.58% | $10.2M |
| 7308907000 | STEEL GRATING | $4.7M | 32.49% | $1.5M |
| 7308909530 | SHEET-METAL ROOFNG SIDING FLRING ETC, IRON OR STEL | $3.9M | 46.49% | $1.8M |
| 7308909560 | ARCHITECTURAL AND ORNAMENTAL WORK, IRON OR STEEL | $3.5M | 48.84% | $1.6M |
STRUCTURES AND PARTS ETC NESOI IRON OR STEEL
COLUMNS PILLARS POSTS BEAMS GIRDERS ETC NESOI
COLUMNS PILLARS POSTS BEAMS GIRDERS ETC IRN/NAL ST
STEEL GRATING
SHEET-METAL ROOFNG SIDING FLRING ETC, IRON OR STEL
ARCHITECTURAL AND ORNAMENTAL WORK, IRON OR STEEL
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7308909090 | STRUCTURES AND PARTS ETC NESOI IRON OR STEEL | $39.0M |
| 7308901000 | CLMNS PLLRS PSTS BMS GRDRS A SMLR STCTRS, IRN O ST | $9.0M |
| 7308909030 | SHEET-METAL ROOFNG SIDING FLRING ETC, IRON OR STEL | $6.9M |
| 7308909060 | ARCHITECTURAL AND ORNAMENTAL WORK, IRON OR STEEL | $3.9M |
STRUCTURES AND PARTS ETC NESOI IRON OR STEEL
9.6M kg
CLMNS PLLRS PSTS BMS GRDRS A SMLR STCTRS, IRN O ST
2.4M kg
SHEET-METAL ROOFNG SIDING FLRING ETC, IRON OR STEL
1.9M kg
ARCHITECTURAL AND ORNAMENTAL WORK, IRON OR STEEL
757.9K kg
SELF-TAPPING SCREWS OF IRON OR STEEL
HS 731814
| State | Imports | Exports | Balance |
|---|---|---|---|
| Texas | $100.6M | $8.2M | -$92.4M |
| California | $22.6M | $6.5M | -$16.2M |
| Alabama | $21.9M | $1.9M | -$19.9M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LAREDO, TX | $69.6M | $5.9M | -$63.7M |
| HOUSTON, TX | $49.3M | $3.3M | -$46.1M |
| NORFOLK-NEWPORT NEWS, VA | $26.0M | $2.7M | -$23.3M |