AWS B2.1-1-008 : 2002 Title: 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 Year: 2002 Publisher: American Welding Society Availability: Within 1-2 working days