American Society for Testing and Materials (ASTM). Current edition approved Nov. 1, 2005. Published November 2005. Originally approved in 1980. Last previous edition approved in 2000 as B 668 – 00. 2 p. This specification covers UNS N08028 seamless cold-finished or hot finished pipe and tube intended for general corrosive service. The general requirements are covered in Specification B 829.