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AWS B2.1-4-220:1999 (R2009)
Standard Welding Procedure Specification (WPS) for Gas Tungsten Arc Welding (Consumable Insert Root) of Chromium-Molybdenum Steel (M-4/P-4, Group 1 or 2),1/8 through 1/2 in. Thick, As-Welded Condition, 1/8 through 3/4 in. Thick, PWHT Condition, IN515 and ER80S-B2, Primarily Pipe Applications Site License
This standard contains the essential welding variables for chromium-molybdenum steel in the thickness range of 1/8through 1/2 in. in the as-welded condition, or 1/8 in. through 3/4 in. in the post weld heat treated (PWHT) condition, using manual gas tungsten arc welding with a consumable insert root. 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 welding procedure specification (WPS) was developed primarily for pipe applications.
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American Welding Society [aws]
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