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SITCSection 2
U.S. imports of semichemical wood pulp (SITC 25191) totaled $10.8M in April 2026, traded with 3 countries.
Importers of Semichemical Wood Pulp 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 Wood Pulp 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 combining a mild chemical pre-treatment with mechanical refining, semichemical wood pulp occupies a distinct processing tier between fully chemical and purely mechanical pulps—a distinction that drives both its classification and its commercial application. It is the dominant furnish for corrugating medium (the fluted inner layer of corrugated board), making it a critical upstream input for the packaging industry. Because yield is higher than fully chemical pulp, semichemical grades are cost-competitive for structural packaging applications where optical brightness is secondary to stiffness.
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Neutral sulfite semichemical (NSSC) pulp is the principal raw material for corrugating medium—the fluted layer inside corrugated shipping containers. Its combination of high yield and good stiffness makes it well-suited for this structural packaging role, and demand tracks closely with industrial and e-commerce packaging volumes.
Semichemical wood pulp has its own dedicated SITC heading (25191) separate from both mechanical pulps and fully chemical pulps. The classification hinges on the production process: a chemical stage must precede mechanical defibration, but the chemical treatment must be less intensive than that used for fully chemical grades. Documentation of the manufacturing process from the mill is advisable to support the classification at entry.
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Monthly import values over time