AWS B2.1.002:1990

AWS B2.1.002:1990 Standard Welding Procedure Specification for Gas Tungsten Arc Welding of Carbon Steel, (M-1/P-1, Group 1 or 2), 3/16 through 7/8 inch, in the As-Welded Condition, With or Without Backing

standard by American Welding Society, 01/01/1990