American Society for Testing and Materials (ASTM). Current edition approved Nov. 1, 2005. Published November 2005. Originally approved in 1970. Last previous edition approved in 2003 as B 517 – 03. 3 p. This specification covers welded, cold-worked, and annealed nickel-chromium-iron alloy (UNS N06600, N06603, N06025, and N06045) pipe for general corrosive service and heat-resisting applications.