AWS B2.1.1.008 : 2002 : R2013
AWS B2.1.1.008 : 2002 : R2013
STANDARD WELDING PROCEDURE SPECIFICATION (SWPS) FOR GAS TUNGSTEN ARC WELDING OF CARBON STEEL (M-1, P-1, OR S-1), 18 THROUGH 10 GAUGE, IN THE AS-WELDED CONDITION, WITH OR WITHOUT BACKING
American Welding Society