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HSChapter 32
U.S. imports of vitrifiable enamels, glazes & engobes (slips) (HS 320720) totaled $4.2M in April 2026, traded with 18 countries.
Importers of Vitrifiable Enamels, Glazes & Engobes (Slips) paid $217K in duties in April 2026 — an effective duty rate of 16% on $1.4M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataVitrifiable enamels, glazes, and engobes (slips) — classified under tariff line 3207200000 — are glass-forming preparations applied to ceramic, metal, or glass substrates and fused at high temperatures to create decorative or protective surfaces. Mexico leads US supply, followed by Spain and Italy, the latter two reflecting Europe's deep tradition in architectural and decorative tile production. The distinction between an engobe (a clay-based slip applied before firing) and a glaze (a glass-forming coating) matters for technical specification but not for HTS classification, as both fall within this single line.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
A vitrifiable enamel or glaze is specifically designed to fuse into a glassy layer when fired at elevated temperatures, forming a permanent bond with the substrate. Non-vitrifiable coatings that cure or dry without glass formation classify elsewhere — typically under heading 3208 or 3209 as paints or varnishes. The product's technical data sheet confirming its firing temperature and glass-forming chemistry is the key classification support.
Yes. Both engobes (clay-based slips) and vitrifiable glazes fall within 3207200000, so a mixed shipment of these ceramic preparation types can be entered under a single tariff line. Importers should ensure the commercial invoice clearly describes each product type to facilitate accurate CBP review.
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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 |
|---|---|---|---|---|
| 3207200000 | VITRIFIABLE ENAMELS & GLAZES,ENGOBES(SLIPS),ETC | $4.2M | 15.69% | $217K |
VITRIFIABLE ENAMELS & GLAZES,ENGOBES(SLIPS),ETC
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3207200000 | VITRIFIABLE ENAMELS & GLAZES,ENGOBES(SLIPS),ETC | $5.5M |
VITRIFIABLE ENAMELS & GLAZES,ENGOBES(SLIPS),ETC
493.2K kg
MASTICS; PAINTERS' FILLINGS
HS 321410
PIGMNTS/PREPS CONT =>80% TITANIUM DIOXIDE, DRY WT
HS 320611
PRINTING INK, OTHER THAN BLACK
HS 321519
COLORING MATTER OF VEGETABLE OR ANIMAL ORIGIN
HS 320300
PIGMENTS & PREPARATIONS BASED THEREON
HS 320417
PAINTS & VARNISHES,IN NONAQUEUS MEDIUM,NESOI
HS 320890
| State | Imports | Exports | Balance |
|---|---|---|---|
| Ohio | $1.9M | $2.6M | +$688K |
| Pennsylvania | $262K | $973K | +$711K |
| Texas | $457K | $496K | +$39K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LAREDO, TX | $2.6M | $1.5M | -$1.1M |
| NORFOLK-NEWPORT NEWS, VA | $183K | $1.0M | +$832K |
| NEW YORK, NY | -- | $537K | +$537K |