Welding Symbols & Blueprint Reading Flashcards

On a welding symbol, what does a flag attached to the reference line indicate?

Answer: Field weld

A flag (filled triangle) on the reference line denotes a field weld, meaning the weld is to be made at the installation site rather than in the shop.

What does the letter 'F' following a weld size designation in a welding symbol specify?

Answer: Finish method of the weld surface

The 'F' contour symbol indicates the method used to finish the weld surface (e.g., G=grind, M=machine, C=chip).

In AWS welding symbol notation, where is the groove weld size placed relative to the weld symbol?

Answer: To the left of the weld symbol

The groove weld size (depth of bevel or effective throat) is placed to the left of the weld symbol on the reference line.

What does a circle at the intersection of the reference line and arrow indicate on a welding symbol?

Answer: Weld all around

A circle at the junction of the arrow and reference line means the weld is to be made completely around the joint.

On a blueprint, a hidden line is represented by which line type?

Answer: Dashed line

Hidden lines are drawn as evenly spaced dashes to indicate edges or surfaces not visible from the current viewing angle.

What information is typically found in the title block of a welding blueprint?

Answer: Drawing number, scale, material, and revision level

The title block contains identifying information such as drawing number, part name, scale, material specification, drafter's name, and revision history.

Which groove weld symbol resembles the letter 'V' on the welding symbol?

Answer: V-groove

The V-groove weld symbol looks like an open 'V' and indicates both members are beveled to form a V-shaped groove.