Declares that specific blast-furnace parts (axial expansion joints and bellows) classified at tariff heading 8307.90.00 are covered by Item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995, effective 27 Nov 2006. That designation is made under s.269P of the Customs Act 1901 by a CEO delegate and remains until revoked under ss.269SC or 269SD. Affects importers who rely on the Schedule 4 treatment (likely tariff consequences); administrative classification, reliance on the delegate's decision, and revocation risk determine compliance burden and commercial choice.