This Tariff Concession Order declares that specific seamless forged alloy-steel tubes (HS 7304.59.00) meeting narrow length, diameter and wall‑thickness limits are to be treated under the tariff concession listed at Part III, Schedule 4, item 50 of the Customs Tariff Act 1995, effective 17 November 2009 (s269P; Sch 4 item 50). It affects importers of those precisely described tubes, who must correctly classify the goods and demonstrate the dimensional criteria to rely on the concession; the order may be revoked under ss269SC/269SD.