AWS B2.1.1.020 : 1994
AWS B2.1.1.020 : 1994
STANDARD WELDING PROCEDURE SPECIFICATION (WPS) FOR; 75% AR/25% CO[2] SHIELDED FLUX CORED ARC WELDING OF CARBON STEEL (M-1/P-1/S-1, GROUP 1 OR 2), 1/8 THROUGH 1-1/2 INCH THICK, E70T-1 AND E71T-1, AS-WELDED OR PWHT CONDITION
American Welding Society