PB Pipe Grade Polybutylene Pellets from China
PB Pipe Grade Polybutylene Pellets are unmodified polybutylene homopolymer granules for plumbing pipe extrusion, with butene-1 units comprising 97% by weight. This primary form polymer offers superior stress crack resistance for hot/cold water systems. Falls under 3902.90.0010 as it meets the polybutylene definition in primary forms.
Duty Rate — China → United States
44%
Rate breakdown
9903.88.0225%Except as provided in headings 9903.88.12, 9903.88.17, 9903.88.20, 9903.88.54, 9903.88.59, 9903.88.61, 9903.88.63, 9903.88.66, 9903.88.67, 9903.88.68, 9903.88.69, or 9903.88.70, articles the product of China, as provided for in U.S. note 20(c) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(d)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Provide manufacturer's spec sheet confirming polybutylene composition to avoid misclassification as polyethylene (3901.10)
• Label shipments clearly as 'primary form polymers, not for retail' to prevent 3921 other plastics confusion