The notification revises tariff classifications relating to longitudinally submerged arc welded (SAW) iron and steel pipes used in oil and gas pipeline infrastructure. The earlier tariff item 7305 11 29, covering non-galvanised longitudinally submerged arc welded pipes and tubes of iron or steel, has been substituted with tariff items 73051141 (clad, plated or coated longitudinally submerged arc welded line pipes of iron or steel having an external diameter exceeding 406.4 mm, commonly used in oil and gas transmission pipelines) and 73051149 (other longitudinally welded tubes and pipes of iron or steel with an external diameter exceeding 406.4 mm).