The Federative Republic of Brazil announced on 4 November 2025 that it has officially launched an anti-dumping investigation on seamless carbon steel line pipes originating from India, Malaysia and Thailand.The products under review, used in oil and gas pipelines, have an outer diameter not exceeding 5 inches (141.3 mm) and are classified under HS 7304.19.00. The investigation was initiated following a request by the domestic producer Vallourec Soluções Tubulares do Brasil SA.the production of these pipes—whether cast, forged, rolled or drawn—fall under HS/NCM 7207.19.00, 7207.20.00, 7214.10.10, 7214.99.10 and 7215.50.00, and the type of billet used does not cause any change in the properties of the final pipe. In a preliminary assessment by the Secretariat of Foreign Trade, the relative dumping margin detected for imports from Malaysia was 23.3%, while the margins calculated for India and Thailand ranged between 37% and 66.5%.