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HSChapter 68
U.S. imports of worked slate & articles of slate or agglomerated slate (HS 680300) totaled $3.8M in July 2026, traded with 23 countries.
Importers of Worked Slate & Articles of Slate or Agglomerated Slate paid $487K in duties in July 2026 — an effective duty rate of 17% on $2.8M in dutiable value, based on actual customs collections rather than the published tariff schedule. Worked Slate & Articles of Slate or Agglomerated Slate imports of $3.8M in July 2026 ran 11% above the year-to-date monthly average of $3.4M.
Last updated: July 2026 dataSpain dominates US imports of worked slate, a position rooted in the Galicia region's extensive natural slate quarries that supply the global roofing market. The US schedule separates roofing slate (6803001000) from other slate articles (6803005000), a split that matters commercially because roofing slate competes with synthetic alternatives and carries different end-use demand cycles than decorative or flooring slate. Agglomerated slate — manufactured from compressed slate particles — is also covered, and importers must distinguish it from natural worked slate on documentation since the two can differ in durability specifications relevant to building codes.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
302 shipments/mo
Yes, heading 6803 explicitly covers both worked natural slate and articles of agglomerated slate, so both product types are classified within the same heading. However, commercial invoices should clearly identify whether the product is natural or agglomerated, as the distinction may be relevant to building-code compliance documentation required by the buyer.
Roofing slate demand tracks construction and re-roofing activity, which peaks in spring and early fall in most US markets. Importers typically build inventory ahead of the spring construction season, and ocean transit times from Spain — the dominant supplier — of roughly two to four weeks factor into order lead times. Weather-related port disruptions in northern European winter months can also affect supply timing.
Subheading 1 of 1 in heading 6803
Subheading 680300 · $3.8M of $3.8M
Supplier Network
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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 | Duty Collected |
|---|---|---|---|---|---|
| 6803005000 | Slate, NESOI | $2.1M | 15.98% | 77.35% | $339K |
| 6803001000 | Roofing Slate | $1.7M | 8.88% | 70.18% | $148K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 6803000000 | Slate, Worked and Articles; Articls of Agglom Slt | $275K |
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.
ImportsExports
Imports
$3.8MYoY · Pro
Exports
$275KYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Spain and China together supply 55% of it.
customs district
destination
entry
rate provision · imports
27.3% enters free of duty; the effective duty rate is 12.86%.