This Order declares that expandable, electric-resistance-welded liners for oil or gas wells (tariff heading 7306.29.00) are goods to which Item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995 applies, effective 13 May 2011. Mechanically, it attaches that Schedule 4 concession to those specific imported goods while the Order remains in force. The declaration was made by a delegate under s.269P and can be revoked under ss.269SC/269SD; importers must rely on correct classification to claim the concession.