Anti-dumping duty extension maintained for subject seamless steel tubes, keeping the existing duty in force pending review. An amendment to Notification No. 7/2017-Customs (ADD) preserves the existing anti-dumping duty on seamless tubes, pipes and hollow profiles of iron, alloy or non-alloy steel originating in or exported from the People's Republic of China by inserting a provision that the anti-dumping duty shall remain in force up to and inclusive of the specified extension date unless revoked, superseded or amended earlier, thereby continuing the duty during the ongoing review process under the Customs Tariff Act and relevant rules.