1.1 This specification establishes the requirements for seamless tube and ferrule stock of copper and various copper alloys up to 31/8 in. [80 mm] inclusive, in diameter, for use in surface condensers, This specification establishes the requirements for seamless tube and ferrule stock of copper and various copper alloys of a specified range of diameters, for use in surface condensers, evaporators, and heat exchangers. The specified coppers and copper