456A Welding Symbols

Question 1

On a welding symbol, what does the arrow side versus the other side indicate?

Accepted Answer

The arrow side refers to the joint surface the arrow points to; the other side refers to the opposite surface of the joint

Answer

Arrow side is for tack welds; other side is for finish welds

Answer

Arrow side is always the top; other side is always the bottom

Answer

There is no distinction between arrow and other side

Question 2

What does a fillet weld symbol look like on a welding drawing?

Accepted Answer

A right triangle placed on the reference line with the vertical leg always on the left

Answer

A circle on the reference line

Answer

A V-shape on the reference line

Answer

A horizontal line through the reference line

Question 3

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

Accepted Answer

The weld must go all around the joint (weld-all-around)

Answer

A spot weld is required

Answer

The weld requires field inspection

Answer

A plug weld is required

Question 4

What does a flag (triangle) at the intersection of the reference line and arrow indicate?

Accepted Answer

The weld is to be made in the field (on site) rather than in the shop

Answer

The weld must be ground smooth

Answer

The weld requires pre-heat

Answer

The weld must be done in the overhead position

Question 5

On a groove weld symbol, what do the numbers inside and outside the weld symbol indicate?

Accepted Answer

The number inside the groove symbol indicates the groove angle; the number to the left indicates the depth of groove or weld size

Answer

Inside is the weld length; outside is the number of passes

Answer

Inside is the electrode size; outside is the amperage

Answer

Numbers are only used for fillet welds

Question 6

What does a supplementary contour symbol (straight line, convex arc, or concave arc) added to a weld symbol indicate?

Accepted Answer

The desired surface profile of the finished weld — flat (flush), convex (crowned), or concave (dished)

Answer

The direction the welder should travel

Answer

The type of filler metal to use

Answer

The number of weld passes required