What is a category C weld?

What is a category C weld?

• A. Weld From Flange To Nozzle
• B. Weld From Nozzle To Shell
• C. Weld From Shell To Flange
• D. Weld From Pipe To Flange

Answer: (A)

In this context, weld categories are about where the weld sits in the assembly, which helps determine the required inspection and fabrication approach. A category C weld is defined as the joint between a flange and a nozzle. That’s why the weld from a flange to a nozzle is the correct choice here—the connection where the flange on the pipe or vessel attaches to the nozzle is designated as category C in this framework. The other joints—nozzle to shell, shell to flange, or pipe to flange—are different joint types and are treated as other categories in this scheme, not the category C weld. Understanding this helps you apply the right inspection and qualification requirements for each specific joint.

In this context, weld categories are about where the weld sits in the assembly, which helps determine the required inspection and fabrication approach. A category C weld is defined as the joint between a flange and a nozzle. That’s why the weld from a flange to a nozzle is the correct choice here—the connection where the flange on the pipe or vessel attaches to the nozzle is designated as category C in this framework.

The other joints—nozzle to shell, shell to flange, or pipe to flange—are different joint types and are treated as other categories in this scheme, not the category C weld. Understanding this helps you apply the right inspection and qualification requirements for each specific joint.