Which welding process does NOT require qualification testing for structural steel under AWS D1.1?

The SMAW (Shielded Metal Arc Welding) process indeed requires qualification testing under AWS D1.1 for structural steel. However, to understand the context of why it can be perceived that other methods may not require qualification testing, it is important to recognize that the requirements for qualification can vary based on the specifics of the project, the material used, the position of the weld, and the processes involved.

In certain situations, particularly in the realm of code compliance for structural steel, some welding processes may have specific exemptions or simplified qualification criteria under AWS D1.1 based on the application or existing certifications. For example, specific applications of GMAW (Gas Metal Arc Welding), FCAW (Flux-Cored Arc Welding), and TIG (Tungsten Inert Gas) may have scenarios where qualification may not be as stringent depending on the projects or regional guidelines adhered to.

Nevertheless, the recognition of the importance of qualification testing ensures that welders are effectively trained and that the welds meet necessary structural integrity standards critical for safety in construction projects. Therefore, it is essential for welders to be aware of the qualification requirements that apply to each welding process, including the scenarios where some may not require stringent testing.