Cross-Linked Polyethylene (PEX) Resin from Canada
Cross-linked polyethylene resin undergoes chemical modification for enhanced heat resistance, used in plumbing pipes. It falls under 3901.90.90.00 per subheading note (a)(3) as chemically modified polymers classified in 'Other' unless more specific. Primary form pellets distinguish it from finished PEX tubing.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Document cross-linking process details to justify 'chemically modified' under note (a)(3) placement in 'Other'
• Avoid shipping as pre-cross-linked tubing to prevent reclassification to 3917.31 (flexible tubes)