ASTM A214 Standard for ERW Steel Heat Exchanger Tubes

ASTM A214 covers minimum-wall-thickness, electric-resistance-welded, carbon steel tubes to be used for heat exchanger, condensers, and similar heat-transfer apparatus.

The steel tubing sizes usually furnished to this specification are to 3 in. [76.2 mm] i outside diameter, inclusive. Tubing having other dimensions may be furnished, provided such steel tubes comply wit all other requirements of this specification.

Mechanical properties requirements do not apply to tubing smaller than 1/8 in. [3.2 mm] in inside diameter or 0.015 in. [0.4 mm] in thickness. The purchaser shall specify in the order the outside diameter and minimum wall thickness. The inside diameter shall not be specified.

The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the "M" designation of this specification is specified in the order.