AWS C3.4
This specification presents minimum fabrication and quality requirements for torch brazing material such as steels, stainless steels, copper, copper alloys, and heat or corrosion-resistant materials and other materials that can be adequately torch brazed. The purpose of this specification is to standardize torch brazing process requirements and control braze joint quality for all applications where braze joints of assured quality are required.
Advance Welding qualifies its brazing operators and brazing procedures to AWS B2.2.