PB Pipe Grade Polybutylene Pellets
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, classifying it under tariff item 3902.90.00 as an 'Other' olefin polymer.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
PGA flags
No agency flag on this HTS number in the CBSA Single Window matching criteria.
CBSA Single Window matching criteria, unknown
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as finished pipes rather than pellets
Finished tubes and pipes of plastics fall under heading 3917, not primary forms.
If the polymer is propylene-dominant
Polypropylene is specifically named in heading 3902, so a propylene-dominant polymer would classify there.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Confirm the product is in primary form (pellets) and that butene-1 content is above 95% to meet the polybutylene designation
• Check if the pellets are subject to any Canadian standards for plumbing applications, though this does not affect tariff classification
• Retain shipping documents showing the product is not a finished article, as that would change classification
Related Products under Tariff item 3902.90.00
1-Hexene Polymer Pellets
1-Hexene Polymer Pellets are a homopolymer of 1-hexene in primary form, with more than 95% hexene units. Used in film applications, this olefin polymer falls under tariff item 3902.90.00 as an 'Other' polymer of olefins, since 1-hexene is not specifically named in heading 3902.
4-Methyl-1-Pentene Copolymer Pellets
4-Methyl-1-Pentene Copolymer Pellets are a copolymer where the named monomer, 4-methyl-1-pentene, predominates by weight. Used in high-temperature films and containers, these pellets fall under tariff item 3902.90.00 as 'Other' olefin polymers, since 4-methyl-1-pentene is not specifically named in heading 3902.
Butene-Propylene Random Copolymer Granules
Butene-Propylene Random Copolymer Granules are a random copolymer where butene predominates by weight over propylene. In primary form, these granules fall under tariff item 3902.90.00 as 'Other' olefin polymers, since butene is not specifically named in heading 3902.
Copolymer Polybutene PB-0300 MFI Pellets
Copolymer polybutene pellets with a melt flow index of 0.3 g/10min, used in film blowing applications. The butene monomer units predominate by weight, classifying it as a polymer of other olefins in primary forms under tariff item 3902.90.00.
Cyclic Olefin Copolymer COC Pellets
Cyclic Olefin Copolymer (COC) Pellets are made from norbornene and ethylene, with norbornene as the predominant monomer. Used in optical media and medical packaging, these pellets fall under tariff item 3902.90.00 as 'Other' olefin polymers, since norbornene is not specifically named in heading 3902.
Duraflex PB8400 Polybutene
Polybutene resin with medium melt flow index, designed for blow molding pipes. This primary form olefin polymer has butene as the predominant monomer, placing it under tariff item 3902.90.00 for other olefin polymers.