Heavyweight Semichemical Fluting Medium Paper
Uncoated fluting paper in rolls, weighing 180 g/m², made from at least 65% unbleached hardwood fibers via combined mechanical and chemical pulping, with CMT 30 crush resistance over 1.8 N/g/m². Used as the corrugated medium in manufacturing double-wall cardboard boxes for heavy-duty shipping. Falls under 4805.19.20.00 as fluting paper over 150 g/m², not meeting the specific semichemical criteria of 4805.11.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If exactly matching semichemical fluting specs with >=65% unbleached hardwood and CMT 30 >1.8 N/g/m²
Meets strict definition in subheading note for semichemical fluting paper, shifting to more specific subheading.
If >=80% sulfate/soda wood fibers and Mullen burst meets kraftliner table for >115 g/m²
Qualifies as kraftliner paperboard if strength specs align, moving to kraftliner heading.
If used for general packaging rather than corrugating, lacking fluting crush resistance
Uncoated paper weighing >150 g/m² for other uses falls under general newsprint/other paper headings.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify grammage exceeds 150 g/m² via certified lab tests; common pitfall is misclassification under lighter weight subheadings
• Provide mill test certificates confirming fluting properties and fiber content to avoid reclassification as general kraft paper
• Ensure rolls are not further worked (e.g
• no printing or coating) per Note 3 to Chapter 48 for proper 4805 entry
Related Products under HTS 4805.19.20.00
High-Burst Fluting Corrugating Paper Roll
Uncoated paper in 200 g/m² rolls for corrugator machines, designed with high Mullen burst index for robust flute formation in triple-wall board. Primarily mechanical pulp blend, not qualifying as sack kraft or semichemical. Classified in 4805.19.20.00 as other fluting paper over 150 g/m².
Recycled Content Testliner Fluting Board
Uncoated 175 g/m² paperboard rolls for outer liner in single-face corrugate, mainly waste paper pulp with dyed surface layer, Mullen burst index above 2 kPa·m²/g. Used in recycled content shipping containers. Fits 4805.19.20.00 as other fluting over 150 g/m².
Oversized Roll Heavy Fluting Paperboard
Extra-heavy 300 g/m² uncoated paperboard in wide rolls for specialty corrugating in pallet wraps and displays. High density for structural flutes without kraftliner burst table compliance. Under HTS 4805.19.20.00 as fluting paperboard >150 g/m².
Straw Pulp Heavy Fluting Sheet Stock
Uncoated fluting paper sheets at 160 g/m², mainly straw pulp from mechanical-chemical process, with crush resistance for medium flute in produce packaging. Does not meet 4805.12's 130+ g/m² and >1.4 N/g/m² exact specs. Under 4805.19.20.00 for other heavyweight fluting paper.
Industrial Grade Corrugator Flute Paper
Robust uncoated 220 g/m² fluting paper in jumbo rolls for high-speed corrugators, optimized for A-flute profiles in furniture packaging. Blend of softwood and recycled fibers without specific subheading qualifiers. Classified under 4805.19.20.00 for heavyweight other fluting.
Multiwall Bag Fluting Medium Paper
Uncoated 155 g/m² fluting paper rolls for reinforcing multiwall paper sacks used in cement packaging. Engineered for machine direction strength without sack kraft tear/tensile minima. 4805.19.20.00 applies as other fluting paper over 150 g/m².