This Tariff Concession Order applies Schedule 4 Item 50 of the Customs Tariff Act 1995 to imported polypropylene piping/tubing classified at tariff heading 3917.22.00, effective 24 June 2005. It changes the tariff treatment for that specific imported good and therefore directly affects importers' duty costs. The order is made under s.269P of the Customs Act 1901 and remains in force until revoked by the CEO's delegate under ss.269SC–269SD, so importers must monitor classification and revocation risk.