ASTM A 556/A 556M - 96 (Reapproved 2005) Standard Specification for Seamless Cold-Drawn Carbon Steel Feedwater Heater Tubes

American Society for Testing and Materials (ASTM). Current edition approved October 1, 2005. Published November 2005. Originally approved in 1965. Last previous edition approved in 2001 as A 556/A 556M – 96 (2001). 5 p. This specification covers minimum-wall-thickness, seamless cold-drawn carbon steel tubes including bending into the form of U-tubes, if specified, for use in tubular feedwater heaters.
The tubing sizes covered shall be 5⁄8 to 11⁄4-in. [15.9 to 31.8-mm] outside diameter, inclusive, with minimum wall thicknesses equal to or greater than 0.045 in. [1.1 mm].