ASTM-F1438 › Complete Document History
Standard Test Method for Determination of Surface Roughness by Scanning Tunneling Microscopy for Gas Distribution System Components


Obsolete Revision Information:
   1993 R20 EDITION - REAPPROVED IN 2020 - May 8, 2020
   1993 R12 EDITION - REAPPROVED IN 2012 - Sept. 1, 2012
   1993 R05 EDITION - REAPPROVED IN 2005 - Jan. 1, 2005
   1993 R99 EDITION - REAPPROVED IN 1999 - Feb. 15, 1993
   1993 EDITION - DISTRIBUTION SYSTEM COMPONENTS - Feb. 15, 1993