Mechanically, this Order declares that a specific type of welded, multilayer steel pipe (Customs Tariff classification 7306.30.00) is to be treated under item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995 from 07.06.2010 until revoked under ss 269SC/269SD. It affects importers and customs administrators: importers of pipes meeting the described construction (steel inner pipe; polyurethane foam insulation with copper wires; HDPE outer casing) will have their imports fall within the Schedule 4 item named in Column 2.