1.1 This specification covers aluminum-alloy (Note 1) drawn seamless round tube in straight lengths designated as shown in the Table 1, for use in surface condensers, evaporators, and heat exchangers.

Note 1—Throughout this specification use of the term alloy in the general sense includes aluminum as well as aluminum alloy.

Note 2—For drawn seamless tubes used in general applications, see Specification B 210M; for extruded tubes see Specification B 221M; for seamless pipe see Specification B 241/B 241M; and for structural pipe and tube see Specification B 429.

Note 3—This specification is the metric counterpart of Specification B 234.

1.2 Alloy and temper designations are in accordance with ANSI H35.1M. The equivalent Unified Numbering System alloy designations are those of preceded by , for example, A91060 for aluminum 1060, in accordance with Practice E 527.

1.3 For acceptance criteria for inclusion of new aluminum and aluminum alloys in this specification, see Annex A2.