Which section of the ASME Code focuses on welding and brazing qualifications?

The correct choice is Section IX of the ASME Code, which specifically addresses the qualifications for welding and brazing. This section outlines the requirements for the performance qualification of welders and welding operators, including the necessary testing procedures and standards that must be followed to ensure that welds can be made with the appropriate level of quality and integrity.

Section IX establishes the criteria for qualifying welding procedures, materials, and personnel, ensuring that they meet the rigorous demands of various applications in manufacturing and construction. This includes the testing of welding techniques and assessing the welders' ability to produce sound welds under different conditions.

While the other sections of the ASME Code focus on different aspects, such as general requirements (Section I), construction and design of pressure vessels (Section III), and non-destructive testing (Section V), they do not specifically deal with the qualifications related to welding and brazing. Thus, Section IX is essential for ensuring that those involved in welding are properly qualified and that their work meets industry standards.