This Tariff Concession Order (TCO 1107490) declares that stainless-steel pipe flanges (tariff heading 7307.21.00), including internal alumina‑ceramic tiles, are captured by item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995 from 28 February 2011 until revoked (s.269P; s.269SC/269SD). Mechanically, importers of those specific goods may access the Schedule 4 tariff concession (reducing or eliminating customs duty) while the order stands; the delegate of the CEO issued the decision and correct tariff classification and documentation determine eligibility.