AWS

Standard Welding Procedure Specification for Gas Tungsten Arc Welding of Austenitic Stainless Steel (M-8/P-8/S-8, Group 1), 1/8 through 1-1/2 inch Thick, As-Welded Condition
standard by American Welding Society, 01/01/2001

Standard Welding Procedure Spec (WPS) for Gas Tungsten Arc Welding Followed by Shielded Metal Arc Welding of Austenitic Stainless Steel (M-8/P-8/S-8, Group 1), 1/8 through 1-1/2 in. Thick, ER3XX, ER3XX-XX, As-Welded Condition, Primarily Pipe Applications
standard by American Welding Society, 03/01/2001

Standard Welding Procedure Specification for Naval Applications (SWPS-N) for Gas Tungsten Arc Welding with Consumable Insert Root of Austenitic Stainless Steel (S-8), 1/8 inch [3 mm] through 1-1/2 inch [38 mm] Thick, MIL-3XX, in the As-Welded Condition, Primarily Pipe for Naval Applications
standard by American Welding Society, 08/03/2018

Specification for Welding Procedure and Performance Qualification
standard by American Welding Society, 08/22/2008