Cast Iron Soil Pipe and Steel Wire Investigations

Summary#

On July 11, 2025, the Canada Border Services Agency began investigations under the Special Import Measures Act into alleged dumping and subsidizing of cast iron soil pipe from the People’s Republic of China. Separately, on July 7, 2025, the CBSA extended the preliminary phase of an existing investigation into certain carbon and alloy steel wire to 135 days, moving the decision deadline to September 4, 2025.

What it does#

• For cast iron soil pipe:

  • Opens investigations into alleged injurious dumping and subsidizing of cast iron soil pipe originating in or exported from the People’s Republic of China.
  • Identifies the usual tariff codes as 7303.00.00.10 and 7303.00.00.90, but warns those codes include non-subject goods and subject goods may use other codes.
  • Says the Canadian International Trade Tribunal will hold a preliminary inquiry and must decide within 60 days whether the evidence shows a reasonable indication of injury.
  • Invites written submissions and evidence; the CBSA must receive them by November 17, 2025. Submissions are public unless clearly marked confidential, and confidential filings must include a public version.
  • Notes the full product definition and the Statement of Reasons will be available on the CBSA website.

• For certain carbon and alloy steel wire:

  • Extends the preliminary phase from 90 days to 135 days because of complexity, many parties, and difficulty getting evidence.
  • Names the countries included in that investigation: People’s Republic of China, Separate Customs Territory of Taiwan, Penghu, Kinmen and Matsu (Chinese Taipei), Republic of India, Italian Republic, Federation of Malaysia, Portuguese Republic, Kingdom of Spain, Kingdom of Thailand, Republic of Türkiye, and Socialist Republic of Vietnam.
  • Sets the updated deadline for the preliminary decision to September 4, 2025.

Who's affected#

• Importers, distributors and buyers of cast iron soil pipe in Canada, especially those importing from the People’s Republic of China.
• Exporters in China and companies that sell similar pipe in Canada (domestic manufacturers).
• Importers and exporters of the specified carbon and alloy steel wire from the listed countries.
• The Canada Border Services Agency and the Canadian International Trade Tribunal, which handle the fact-finding and decisions.
• If you use these products in construction, plumbing, manufacturing or resale, you may notice price or supply changes if measures are later imposed.

Why it matters#

• If the investigations and tribunal find injury and dumping or subsidizing, Canada can impose anti‑dumping or countervailing measures. That could raise costs or change sourcing for businesses that buy these products.
• The investigations create a window for affected parties to submit evidence; importers who want to protect their interests should act before November 17, 2025 (cast iron) or follow the steel‑wire timeline to September 4, 2025.
• Product definitions and tariff details matter: the listed tariff codes may not cover every affected shipment, so importers should check the CBSA’s full definition on its website.