Mechanically, this Order applies Item 50 in Part III of Schedule 4 of the Customs Tariff Act 1995 to specified scaffolding components classified at 7610.90.00, effective 27 Jan 2009 until revoked. It lists parts (base plates, braces, couplers, guard rails, hopups, jacks, joiners, ladders, putlogs, beams, ledgers, planks, platforms, stairs, toe boards, standards, tie bars, transoms).
The change means importers of those listed items may receive the Schedule 4 concession (who pays: importers), requires documentary/technical matching of goods to the list (compliance cost), and leaves revocation to customs delegates (ss.269P, 269SC–269SD), creating administrative discretion and interpretation risk.