Red Seal Welder (456A) Interprovincial Exam

What is the meaning of the number in parentheses on a groove weld symbol, such as a V-groove with (5) written in it?

The root opening (gap between the parts) in millimetres The groove angle in degrees The required penetration depth in millimetres The number of weld passes required

Correct Answer:

The root opening (gap between the parts) in millimetres

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