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HSChapter 25
U.S. imports of macadam of slag, dross, or similar industrial waste (HS 251720) totaled $1.9M in June 2026, traded with 1 country.
Macadam of Slag, Dross, or Similar Industrial Waste imports of $1.9M in June 2026 ran 94% above the year-to-date monthly average of $972K.
Macadam produced from metallurgical slag, dross, or comparable industrial by-products is classified under a single tariff line (2517200000) and serves primarily as a road-building and construction aggregate material. Unlike natural stone aggregates, this product is derived from industrial processing waste — typically from steel, iron, or non-ferrous smelting operations — and its composition can vary significantly by source industry. Canada is the dominant US supplier, reflecting the integrated North American steel industry and the cost efficiency of cross-border slag aggregate shipments.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Slag macadam (2517200000) is specifically composed of processed industrial by-products — such as blast furnace slag or non-ferrous smelting dross — rather than quarried natural stone. Natural pebbles, gravel, and crushed stone are classified under heading 251710. The key classification factor is the origin of the material: industrial processing waste versus geological extraction.
Slag and dross materials can be subject to EPA scrutiny depending on their composition and whether they are classified as solid waste or a commercial product under RCRA. Importers should obtain documentation from the foreign supplier confirming the slag's industrial origin, processing method, and that it meets applicable specifications for use as a construction aggregate, to support its classification as a commercial product rather than a waste material.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| CANADA | $1.9M | $62K | -$1.8M |
| DOMINICAN REPUBLIC | -- | $135K | +$135K |
| NETHERLANDS | -- | $58K | +$58K |
| THAILAND | -- | $26K | +$26K |
| GUATEMALA | -- | $8K | +$8K |
Monthly import values over time
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share |
|---|---|---|---|---|
| 2517200000 | MACADAM OF SLAG, DROSS OR SIMILAR IND WASTE | $1.9M | 0.00% | 0.00% |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2517200000 | MACADAM OF SLAG, DROSS OR SIMILAR IND WASTE | $289K |
PORTLAND CEMENT EXCEPT WHITE PORTLAND CEMENT
HS 252329
SULFUR OF ALL KINDS, NOT SUBLIMED,PRECIP,COLLOIDAL
HS 250300
SALT INCL TBL/DENTRD, PURE SODM CHLOR ETC; SEA WTR
HS 250100
FUSED MAGNESIA; DEAD-BURN MAGNESIA; MAGNESIA NESOI
HS 251990
FLUORSPAR OV 97% OF CALCIUM FLUORD BY WGHT
HS 252922
UNGRND NAT CAL PHSPH, ALUM CAL PHOS A PHOS CHALK
HS 251010
| State | Imports | Exports | Balance |
|---|---|---|---|
| South Carolina | $1.3M | -- | -$1.3M |
| Florida | $620K | -- | -$620K |
| Texas | -- | $200K | +$200K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CHARLESTON, SC | $1.3M | -- | -$1.3M |
| TAMPA, FL | $620K | -- | -$620K |
| MIAMI, FL | -- | $135K | +$135K |