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AWS B2.1-1-027:2011
STANDARD WELDING PROCEDURE SPECIFICATION(WPS) FOR; SELF-SHIELDED FLUX CORED ARC WELDING OF CARBON STEEL(M-1/P-1/S-1, GROUP 1 OR 2),1/8 THROUGH 1/2 INCH THICK, E71T-11, AS-WELDED CONDITION
standard by American Welding Society, 06/28/2011