STD.ASME B31.9-EN6L199b0759b700580178302ASME B31.9-1996 EditionRevision of ASME/ANSI B31.9-1988BUILDING SERVIC班BASME CODE FOR PRESSURE PIPING,B31AN AMERICAN NATIONAL STANDARDE米SThe American Society ofMechanical Engineersopyright by the American Society Of Mechanical EngineersSTD.ASME B31.9-EN6L179b=0757b700580179249The American Society ofMechanical EngineersA N A ME RI CAN NA TI O N A LSTA NDARDBUILDING SERVICESASM证COD旺FOR PRESSURE PIPING,B31AN AMERICAN NATIONAL STANDARDASME B31.9-1996 EditionRevision of ASME/ANSi B31.9-1988
