Cast iron soil pipe: provisional duties

Summary#

• The Canada Border Services Agency (CBSA) made preliminary determinations that cast iron soil pipe from the People’s Republic of China is being dumped and subsidized.
• As of October 9, 2025, provisional duties can be charged on those imported goods while the Canadian International Trade Tribunal (CITT) carries out a full injury inquiry, which must finish within 120 days after it receives notice.

What it does#

• The CBSA found evidence of dumping and subsidizing for cast iron soil pipe from the People’s Republic of China and announced preliminary decisions on October 9, 2025.
• Provisional duties are payable on affected shipments released from CBSA custody starting October 9, 2025 and continue until the earlier of:
  • the investigations are terminated,
  • the CITT makes an order or finding, or
  • an undertaking is accepted.
• The provisional duty charged will not exceed the estimated margin of dumping plus the estimated amount of subsidy.
• The Customs Act governs how those provisional duties are accounted for and paid; failing to pay can trigger interest under that Act.
• The CITT will hold a full inquiry into whether the dumping/subsidizing injures Canadian industry and must make an order or finding within 120 days of receiving notice of the CBSA decision.
• A Statement of Reasons explaining the CBSA decisions will be issued within 15 days.
• The CBSA’s web page on Dumping and subsidy investigations lists the full product definition and possible tariff classifications.

Who's affected#

• Importers and customs brokers who bring cast iron soil pipe into Canada from the People’s Republic of China.
• Canadian companies that buy, resell or use this pipe — for example plumbing, construction, and building-supply businesses — may face higher costs or delays.
• Domestic manufacturers of similar pipe, who are the focus of the injury inquiry.
• The notice does not list specific duty amounts or tariff codes in the Gazette item; those details are on the CBSA web page.

Why it matters#

• Importers may need to pay provisional duties and could face higher immediate costs or cash-flow impacts at the border.
• Buyers down the supply chain might see higher prices or delays if imports are held or duties raise costs.
• If the full inquiry finds injury, longer-term duties or measures could be imposed, which would protect some Canadian producers but raise costs for importers and users.
• The item signals that a formal trade dispute is underway; affected businesses should check the CBSA page for product definitions, tariff codes, and the forthcoming Statement of Reasons.