Rigid Polystyrene Conduit Pipe
Rigid electrical conduit tubing made from polystyrene for protecting wiring in buildings. Classified in 3917.29.00.90 for rigid pipes of other plastics used in conveyance of cables.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If marketed as electrical fittings rather than conduit pipes
Other plastic articles for electricity use (e.g., insulators) fall under 3926, not conveyance tubes.
If flexible polystyrene tubing
Lack of rigidity moves it to flexible tubes/pipes/hoses of other plastics in 3917.39.
If for builder's construction use beyond conveyance
Builder's ware like rigid plastic moldings classify under 3925.90 if not pipe-shaped for fluids/cables.
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
• Test and document rigidity and polystyrene monomer content to comply with Chapter 39 polymer rules
• Include UL certification for electrical use to support classification and safety compliance
Related Products under HTS 3917.29.00.90
Rigid Fluoropolymer Chemical Pipe
Rigid pipe from fluoropolymers like ECTFE for aggressive chemical handling. 3917.29.00.90 applies to such rigid plastic pipes of other fluorinated types.
Rigid Ethylene-Vinyl Alcohol Pipe
Rigid barrier pipe from EVOH copolymer for gas lines. Classifies 3917.29.00.90 as copolymer not meeting 95% specific monomer rules.
Rigid Liquid Crystal Polymer Conduit
Rigid electrical conduit from LCP for high-speed data cables. 3917.29.00.90 rigid other plastics pipe.
Rigid PVC Sewer Pipe
A rigid tube made from polyvinyl chloride (PVC) used for underground sewer drainage systems. It falls under HTS 3917.29.00.90 as a rigid tube, pipe, or hose of other plastics (not polymers of ethylene, propylene, or vinyl chloride specifically named), designed for conveying liquids in plumbing applications.
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
Rigid tubing from polycarbonate plastic for HVAC air distribution systems. It qualifies under HTS 3917.29.00.90 for rigid pipes of other plastics, used to convey air in ventilation setups.