American Society for Testing and Materials (ASTM). Current edition approved Sept. 1, 2006. Published September 2006. Originally approved in 1953. Last previous edition approved in 2002 as A 369/A 369M – 02. 4 p. This specification covers heavy-wall carbon and alloy steel pipe made from turned and bored forgings and is intended for high-temperature service. Pipe ordered under this specification shall be suitable for bending and other forming operations and for fusion welding. Selection will depend on design, service conditions, mechanical properties and hightemperature characteristics.