1.1 This specification2 covers wrought carbon steel and alloy steel fttings of seamless and welded construction, cov-ered by the latest revision of ASME B169, ASME B16.11, MSS SP-79, MSS SP-83, MSS SP-95, and MSS SP-97.Fittings difering from these ASME and MSS standards shall be fumished in accordance with Supplementary Requirement S58 of Specification A960/A960M. These ftings are for use in pressure piping and pressure vessel service at low tempera-
tures.
