AWS B2.1-1-211-2001
Standard Welding Procedure Specification (WPS) for Gas Tungsten Arc Welding with Consumable Insert Root Followed by Shielded Metal Arc Welding of Carbon Steel (M-1/P-1/S- 1, Group 1 or 2), 1/8 Through 1-1/2 Inch Thick INMs-1, ER70S-2, and E7018, As-Welde