AWS D18.1:1999
Specification for Welding of Austenitic Stainless Steel Tube and Pipe Systems in Sanitary (Hygienic) Applications
standard by American Welding Society, 04/14/1999
AWS A5.3/A5.3M:1999 (R2007)
Specification for Aluminum and Aluminum Alloy Electrodes for Shielded Metal Arc Welding
standard by American Welding Society, 02/11/1999