Rigid Cellulosics Ventilation Pipe
Rigid pipe from cellulose acetate for ventilation systems in cleanrooms. Classified under 3917.29.00.90 for rigid tubes of other plastics like cellulosic derivatives.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If flexible cellulosic hose
Flexibility delineates subheading within rigid vs flexible.
If under 38.1cm x 45.7cm as plates/sheets
Small rigid plastic sheets/plates qualify for Free (B) under 3921 US note, if not tubular.
If predominantly paper/cellulose pulp
Paper-based tubes shift to Chapter 48 if plastic <50%.
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Import Tips & Compliance
• Prove cellulosic base per polymer notes; chemically modified ok in 'Other'
• Include cleanroom certs for use validation
Related Products under HTS 3917.29.00.90
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Rigid Liquid Crystal Polymer Conduit
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Rigid PVC Sewer Pipe
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Rigid Acrylonitrile-Butadiene-Styrene Drainage Pipe
A rigid pipe manufactured from ABS (acrylonitrile-butadiene-styrene copolymer) for wastewater drainage in residential plumbing. Classified in 3917.29.00.90 as a rigid tube or pipe of other plastics, where ABS copolymer does not meet specific named polymer criteria in prior subheadings.
Rigid Polycarbonate Air Duct Pipe
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