B2.1-5A-224:2022 STANDARD WELDING PROC SPEC (SWPS) FOR GAS TUNGSTEN ARC WELDING FOLLOWED BY SHIELDED METAL ARC WELDING OF CHROMIUM-MOLYBDENUM STEEL, ER90S-B3 AND E9018-B3, 1/8 IN THRU 1/2 IN THICK, AS-WELDED COND; 1/8 IN THRU 1-1/2 IN THICK, PWHT COND, PRIMARILY PIPE APP

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This standard contains the essential welding variables for chromium-molybdenum steel in the thickness range of 1/8 inch [3 mm] through 1/2 inch [13 mm] in the as-welded condition; or 1/8 inch [3 mm] through 1-1/2 inch [38 mm] in the postweld
heat treated (PWHT) condition, using manual gas tungsten arc welding followed by manual shielded arc welding. It cites the base metals and operating conditions necessary to make the weldment, the filler metal specifications, and the
allowable joint designs for groove welds. This standard welding procedure specification (SWPS) was developed primarily for pipe applications.