Tariff Concession Order 0840473 designates specific copper‑nickel tubes or pipes (ASTM B111 C70600) with outside diameters 38.1–152 mm as goods to which Item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995 applies, effective 20 November 2008. The practical effect is a change in import tariff treatment for those identified products. The decision was made by a delegate of the CEO (s.269P) and may be revoked under ss.269SC/269SD; importers must show conformity with the listed specification and sizes to rely on the concession.