AWS B2.1-4-220-2021
- Standard No.
- AWS B2.1-4-220-2021
- Release Date
- 1970
- Published By
- /
- Latest
- AWS B2.1-4-220-2021
AWS B2.1-4-220-2021 history
- 1970 AWS B2.1-4-220-2021
- 1999 AWS B2.1-4-220-1999 Standard Welding Procedure Specification (SWPS) 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 a
