Sulfate Process Pressboard Sheets
Pressboard from chemical sulfate pulp, 300 g/m², machine-pressed sheets for marine electrical panels. HTS 4805.93.20.00 for other uncoated pressboard ≥225 g/m², aligning with kraft-like strength.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If sack kraft specs 60-115 g/m² with tear/tensile minima
Lighter weight and specific strength for sacks classifies as sack kraft paper.
If light-weight coated both sides ≤72 g/m²
Coating changes to lightweight coated paper subheading despite base weight.
If printed and cut to size for retail sale
Tarred/bituminized or retail-cut versions fall under 4821 per chapter exclusions.
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Import Tips & Compliance
• Pulp process affidavit required; >80% sulfate avoids sack kraft confusion under 4804.21
• Test for ash content <8% if sulfite mix suspected, to rule out 4805.30
Related Products under HTS 4805.93.20.00
Transformer Pressboard
High-density pressboard weighing over 225 g/m², made from compressed wood fibers, used as insulation in oil-immersed electrical transformers. It falls under HTS 4805.93.20.00 as uncoated pressboard, not further worked beyond note 3 specifications, in sheets for electrical applications.
High-Density Insulation Pressboard
Uncoated pressboard sheets >225 g/m², high density 1.25 g/cm³, for switchgear insulation and panel boards in power distribution. Fits 4805.93.20.00 as pressboard in rolls/sheets, no additional working.
Virgin Pulp Pressboard
100% virgin softwood pulp pressboard, 400 g/m² sheets for high-strength electrical applications. Classed in 4805.93.20.00 as other uncoated pressboard over specified weight.
Electrical Presspahn Board
Presspahn is a specialized pressboard from 100% sulfate wood pulp, density 1.0-1.2 g/cm³, over 225 g/m², in sheets for dielectric insulation in high-voltage equipment. Classified under 4805.93.20.00 as uncoated pressboard meeting chapter note 3, ideal for motors and generators.
Density Pressboard Grade A
Grade A density pressboard, 225-500 g/m², compressed to 1.1 g/cm³ min, uncoated sheets for battery separators and electrical insulation. HTS 4805.93.20.00 covers this as 'other' pressboard not further processed per note 3.
Battery Separator Pressboard
Specialty pressboard >225 g/m² for lead-acid battery separators, high purity sulfate pulp, uncoated. Under 4805.93.20.00 as pressboard not further worked, essential for industrial batteries.