PB Pipe Grade Polybutylene Pellets from Japan
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 — Japan → United States
6.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
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