Welding Certification — Knowledge Practice
Weld symbols: practice questions
Our Welding Knowledge bank has 12 questions on this topic. Here are 3 of them with answers; the full mock exam draws from every topic, like the real one.
Question 1
What does a flag on a welding symbol mean?
- Flush contour
- Weld all around the joint, on every side of the member
- Back weld
- Field weld (made on site, not in the shop)
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D. Field weld (made on site, not in the shop) — The flag is at the junction of the arrow and reference line.
Question 2
What does '2-6' to the right of a fillet weld symbol mean?
- A 2-inch weld size with a 6-inch leg on the vertical member of the joint
- Intermittent welds 2 inches long, spaced 6 inches center to center
- Weld 2 to 6 times
- Two welds of 6 inches
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B. Intermittent welds 2 inches long, spaced 6 inches center to center — This is length-pitch notation.
Question 3
What does a triangle on a welding symbol represent?
- A spot weld
- A fillet weld
- A plug weld
- A V-groove weld
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B. A fillet weld — The size is written to the left of the triangle.