Which organization is primarily responsible for publishing the structural welding codes used in the United States?

• A. International Electrotechnical Commission (IEC)
• B. American Society of Mechanical Engineers (ASME)
• C. American Welding Society (AWS)
• D. International Organization for Standardization (ISO)

Answer: (C)

Structural welding standards used in the United States are published by the American Welding Society. They develop and maintain the widely adopted AWS D1.x series of structural welding codes, along with the related procedure and qualification standards. These codes set the requirements for weld quality, fabrication, and inspection that fabricators and inspectors rely on to ensure safe, consistent structural performance. While ASME codes govern boilers, pressure vessels, and piping systems, and ISO/IEC provide international standards, the organization most closely associated with publishing the primary structural welding codes used in US construction is the American Welding Society.