This Tariff Concession Order declares that hydrostatic pressure test rigs for water‑pipe (customs classification 8479.89.90) qualify for the concession in Part III of Schedule 4 (item 50) of the Customs Tariff Act 1995 from 31 August 2007 until revoked. It affects importers and customs officials by changing the tariff treatment for those specific rigs, reducing or removing customs duty for qualifying imports and shifting related compliance and classification decisions to importers and the agency.