Nov 18, 2002 #1 mgh329 Chemical Joined Nov 18, 2002 Messages 1 Location US How can Fig 2 & 3 of ANSI B16.25 be acceptable to be used without backing rings when the GTAW method is used?
How can Fig 2 & 3 of ANSI B16.25 be acceptable to be used without backing rings when the GTAW method is used?