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HSChapter 50
U.S. imports of silk waste (HS 500300) totaled $36K in April 2026, traded with 8 countries.
Silk Waste imports of $36K in April 2026 ran 43% below the year-to-date monthly average of $65K.
Last updated: April 2026 dataSilk waste encompasses a range of byproduct forms — cocoons unsuitable for reeling, yarn waste, and garnetted stock — each representing a different stage of processing failure or trim loss in the silk production chain. China and Italy are the leading suppliers to the US market, consistent with their roles as the world's largest silk producer and a major luxury textile manufacturer, respectively. The US schedule divides the heading into uncarded or uncombed waste (5003001000) and other silk waste (5003009000), with the carding and combing distinction signaling how far the material has been prepared for spinning into spun silk yarn.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Silk waste that has not been carded or combed — meaning it has not been mechanically aligned into a fiber web or sliver — is classified under 5003001000. Waste that has undergone carding or combing falls under 5003009000. Importers should obtain processing declarations from their supplier confirming whether any fiber preparation steps were performed prior to export.
Yes. Cocoons that are pierced (where the moth has emerged), double (two larvae in one cocoon), or otherwise unsuitable for continuous filament reeling are properly classified as silk waste under HTS 500300 rather than as silkworm cocoons suitable for reeling (HTS 500100). The commercial grade assessment and any quality certificates from the exporter should document the unsuitability for reeling.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| ITALY | $31K | -- | -$31K |
| UNITED KINGDOM | $5K | $8K | +$3K |
| DOMINICA | -- | $5K | +$5K |
| INDIA | $420 | -- | -$420 |
| CANADA | $287 | -- | -$287 |
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 |
|---|---|---|---|---|
| 5003001000 | SILK WASTE, NOT CARDED OR COMBED | $31K | 0.13% | $42 |
| 5003009000 | SILK WASTE, OTHER | $5K | 12.51% | $608 |
SILK WASTE, NOT CARDED OR COMBED
SILK WASTE, OTHER
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 5003001000 | SILK WASTE, NOT CARDED OR COMBED | $8K |
| 5003009000 | SILK WASTE, OTHER | $5K |
SILK WASTE, NOT CARDED OR COMBED
240 kg
SILK WASTE, OTHER
699 kg
WOV FAB OV 85% SILK OR SILK WASTE EXCEPT NOIL SLK
HS 500720
WOVEN FABRICS OF NOIL SILK
HS 500710
SILK YARN, NOT SPUN FROM WASTE, NOT RETAIL PACKED
HS 500400
WOVEN FABRICS OF SILK OR SILK WASTE, NESOI
HS 500790
SILK YARN & YARN FROM WASTE RETAIL PK; SILKWM GUT
HS 500600
YARN SPUN FROM SILK WASTE NOT PUT UP RETAIL SALE
HS 500500
| Port | Imports | Exports | Balance |
|---|---|---|---|
| MIAMI, FL | $31K | -- | -$31K |
| SAN FRANCISCO INTERNATIONAL AIRPORT, CA | -- | $8K | +$8K |
| PORT EVERGLADES, FL | -- | $5K | +$5K |