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HSChapter 47
U.S. imports of semichemical woodpulp (HS 470500) totaled $10.8M in April 2026, traded with 3 countries.
Importers of Semichemical Woodpulp paid $61K in duties in April 2026 — an effective duty rate of 8.1% on $753K in dutiable value, based on actual customs collections rather than the published tariff schedule. Semichemical Woodpulp imports of $10.8M in April 2026 ran 61% above the year-to-date monthly average of $6.7M.
Last updated: April 2026 dataProduced by partially softening wood chips with mild chemical treatment before mechanical refining, semichemical pulp occupies the processing middle ground between purely mechanical and fully chemical grades. It is the dominant furnish for corrugating medium — the fluted inner layer of corrugated containerboard — where its stiffness-to-cost ratio is difficult to match. The single US tariff line 4705000000 covers all semichemical woodpulp regardless of species or bleaching level. Canada is the leading supplier to the US, with Sweden and Norway also among the top sources, reflecting North American and Scandinavian integrated packaging-industry supply chains.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Neutral sulfite semichemical (NSSC) is the predominant process, using sodium sulfite and sodium carbonate to partially delignify chips before disk refining. For HTS purposes, the process variant does not affect classification — all semichemical pulp (regardless of whether NSSC, cold soda, or another hybrid method is used) falls under 4705000000, provided it is genuinely a combination of chemical pretreatment and mechanical refining.
CBP may request mill process documentation showing both the chemical pretreatment stage (cooking conditions, chemical charge) and the subsequent mechanical refining step. A pulp that undergoes only mechanical processing classifies under chapter 47's mechanical pulp headings, while one fully cooked to fiber separation is a chemical pulp. The hybrid nature of semichemical pulp must be supported by technical mill records.
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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 |
|---|---|---|---|---|
| 4705000000 | WOODPULP BY MECHANICAL&CHEMICAL PULPING PROCESSES | $10.8M | 8.06% | $61K |
WOODPULP BY MECHANICAL&CHEMICAL PULPING PROCESSES
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 4705000000 | WOODPULP BY MECHANICAL&CHEMICAL PULPING PROCESSES | $1.2M |
WOODPULP BY MECHANICAL&CHEMICAL PULPING PROCESSES
2.1K ctn
CHEMICAL WOODPULP, SODA ETC. N DIS S BL & BL CONIF
HS 470321
CHEM WOODPULP, SODA ETC, N DIS S BL & BL NONCONIF
HS 470329
CHEM WDPULP SULFITE EX DSSLVNG GR CONIF SEMI/BLECH
HS 470421
CHEMICAL WOODPULP, DISSOLVING GRADES
HS 470200
CHEM WDPULP SULFATE EX DISSLVNG GR CONIF, UNBLEACH
HS 470311
WASTE, SCRAP UNBLEACH KRAFT, CORRUGATD PAPER/PPRBD
HS 470710
| Port | Imports | Exports | Balance |
|---|---|---|---|
| TROUT RIVER, NY | $3.9M | -- | -$3.9M |
| JACKMAN, ME | $3.5M | -- | -$3.5M |
| NORTON, VT | $2.0M | -- | -$2.0M |