Which weld category describes welding from flange to nozzle?

Which weld category describes welding from flange to nozzle?

• A. Category C Weld
• B. Category D Weld
• C. Category A Weld
• D. Category B Weld

Answer: (A)

Weld category classifications are tied to the joint geometry and access, which shape how you approach the weld and how it’s inspected. Welding from a flange to a nozzle forms a combined, often more complex contour than a simple pipe joint. This kind of joint typically needs careful fit-up, sometimes multiple passes, and attention to sealing the pressure boundary. Category C Weld is the designation used for this flange-to-nozzle configuration because it captures those specific design and fabrication considerations—ensuring the right welding technique, heat treatment considerations, and inspection requirements are applied. Other categories describe different joint types with distinct geometry or accessibility, which isn’t the case for a flange-to-nozzle weld.

Weld category classifications are tied to the joint geometry and access, which shape how you approach the weld and how it’s inspected. Welding from a flange to a nozzle forms a combined, often more complex contour than a simple pipe joint. This kind of joint typically needs careful fit-up, sometimes multiple passes, and attention to sealing the pressure boundary. Category C Weld is the designation used for this flange-to-nozzle configuration because it captures those specific design and fabrication considerations—ensuring the right welding technique, heat treatment considerations, and inspection requirements are applied. Other categories describe different joint types with distinct geometry or accessibility, which isn’t the case for a flange-to-nozzle weld.