AWS B2.1.1.204 : 1996
AWS B2.1.1.204 : 1996
STANDARD WELDING PROCEDURE SPECIFICATION (SWPS) FOR SHIELDED METAL ARC WELDING OF CARBON STEEL (M-1/P-1/S-1, GROUP 1 OR 2), 1/8 THROUGH 3/4 INCH THICK, E6010 (VERTICAL DOWNHILL ROOT WITH THE BALANCE VERTICAL UPHILL), AS-WELDED CONDITION, PRIMARILY PIPE APPLICATIONS
American Welding Society