AWS B2.1.1.206 : 1996
AWS B2.1.1.206 : 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 1-1/2 INCH THICK, E6010 (VERTICAL DOWNHILL) FOLLOWED BY E7018 (VERTICAL UPHILL), AS-WELDED OR PWHT CONDITION, PRIMARILY PIPE APPLICATIONS
American Welding Society