1.1 ,This specification2 covers aluminum and aluminum-alloy drawn seamless tubes in straight lengths and coils for general purpose and pressure applications in alloys (Note 2), tempers, and thicknesses shown in Table 2 [Table 3]. Coiled tubes are generally available only as round tubes with a wall thickness not exceeding 0.083 in. [2.00 ,mm] and only in non-heat-treatable alloys.