This order applies Schedule 4 item 50 of the Customs Tariff Act 1995 to a specific imported product: carbon‑steel butt‑weld pipe caps to ASTM A234 Grade WPB (HS 7307.93.00), effective 21 Oct 2010 until revoked. Mechanically, it changes the tariff treatment on import for those exact fittings. It affects importers (who obtain the specified tariff treatment), customs officials (who must verify classification and the ASTM specification), and Commonwealth revenue; the decision was taken by a delegate under section 269P of the Customs Act 1901.