MSS-SP-55 › Complete Document History
Quality Standard for Steel Castings for Valves, Flanges, Fittings, and Other Piping Components - Visual Method for Evaluation of Surface Irregularities (ANSI-approved American National Standard)

Complete Current Edition:
   2011 EDITION - Visual Method for Evaluation of Surface Irregularities - Jan. 1, 2011

Obsolete Revision Information:
   2006 EDITION - COMPONENTS - VISUAL METHOD FOR EVALUATION OF SURFACE IRREGUL - Jan. 1, 2006
   2001 EDITION - SURFACE IRREGULARITIES - July 1, 2001
   1996 EDITION - SURFACE IRREGULARITIES - Jan. 1, 1996
   DOD ADOPTION 1 - FYI ONLY: DOD ADOPTED - June 2, 1987
   1985 R90 EDITION - QUALITY STANDARD FOR STEEL CAS - Jan. 1, 1985