AWS B2.1-1-002 : 2020 Title: Standard Welding Procedure Specification (WPS) 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. Site License Year: 2020 Publisher: American Welding Society Availability: Within 1-2 working days