1.1 This specification covers seamless tubes of nickel and nickel alloys, as shown in Table 1, for use in condenser and heat-exchanger service. 1.2 This specification covers outside diameter and ave This specification covers seamless tubes of nickel and nickel alloy for use in condenser and heat-exchanger service. This covers outside diameter and average wall, or outside diameter and minimum wall tube. Tube shall be furnished in the alloys and con