ASTM A-513: This specification covers electric-resistance-welded carbon and alloy steel tubing for use as mechanical tubing. It covers round, square,rectangular, and special shapes made from hot or cold rolled steel. It covers as welded, sink drawn, mandrel drawn, and special smooth inside diameter. Common grades in warehouse stocks are 1010, 1015, 1020, 1026, and ST52.3.
The types and conditions of tubing covered by this specification are:
special smooth inside diameter
12.2 Thermal conditions under which tubing may be furnished are: no final thermal treatment, stress relieved, and annealed or normalized.
A Marmon Distribution Services/Berkshire Hathaway Company