AWS D17.1/D17.1M:2017
Specification for Fusion Welding for Aerospace Applications, 3rd Edition, with 2018 Amendment
standard by American Welding Society, 07/28/2017
AWS B5.2:2018
Specification for the Qualification of Welding Inspector Specialists and Welding Inspector Assistants
standard by American Welding Society, 05/11/2017