Symbols Flashcards
Learn the individual weld symbols, arrow vs. other side, dimensioning, and how they form a welding symbol.
A graphic character specifying a weld type is called:
A weld symbol
A graphical representation of the specifications for producing a welded joint including size and location is called:
Welding symbol
All welding symbol must have at least:
A reference line and arrow
Does the reference line always get drawn horizontally?
Yes
All information referring to the arrow side of the joint goes on which side of the reference line?
Under the reference line
All information referring to the other side of the joint goes on which side of the reference line?
Above the reference line
Information on the reference line is always read in what direction?
From left to right
What does this symbol mean?
Weld all around
A circle at the tangent of the reference line and arrow means what?
Weld all around
A flag at the tangent of the reference line and arrow means what?
Field weld
What does this symbol mean?
Arrow side single V-groove with backing removed after welding
When the letter “R” is placed inside the backing symbol, this means:
Backing must be removed
Which of these weld cross sections shows a backing weld?
The middle weld
Which one of these weld cross sections shows a back weld?
The top weld
Will the bead on the other side of this butt joint be welded first or last?
Last
Which weld symbol specifies surfacing?
The middle symbol
What process is being specified here?
Torch brazing
In a welding symbol, the size of the weld is always to the ______ of the weld symbol.
Left
Which operation will be completed first?
Arrow side V-groove
When multiple reference lines are used, which operation is to be performed first?
The one closest to the arrow
Does the arrow always come off the right side of the reference line?
No
Does the right or left plate get beveled?
Right
Does the right or left plate get beveled?
Right
Does the left or right plate get beveled?
Left
Does the right or left plate get beveled?
Left
Does the left or right plate get beveled?
Right
When there is a break in the arrow line of a welding symbol, the arrow points to:
The side which receives the preparation
What does it mean if no information appears to the right of a fillet weld symbol?
The weld is to be continuous along the entire length
Groove weld size only needs to be specified for what type of weld?
PJP
partial joint penetration
The type of weld formed when the length of a round bar is placed against a flat plate is called what?
Flare bevel groove
What types of grooves can a weld symbol specify?
Square, bevel, V, U and J
If a dimension appears inside the ‘V’ symbol for a single V-groove weld, the dimension refers to:
Root opening
For a J-groove, if there is no break in the arrow line of the welding symbol, this means what?
Either plate can get beveled
What does it mean if no information appears to the left of a groove weld symbol?
The weld is CJP (complete joint penetration)
For a flare bevel-groove weld symbol, the straight line that is perpendicular to the reference line is always drawn on which side of the symbol?
The left
For a butt weld, if both plates receive a J-groove preparation, the resulting groove will be a:
U-groove
What does this symbol mean?
Arrow side flare V-groove with 1/16” root opening
What symbol should be used for this joint?
Flare bevel groove
What does this symbol mean?
Arrow side U-groove with back or backing weld
What type of weld is shown here?
Double flare V-groove
What type of weld is shown here?
Bevel groove
What type of weld is shown here?
Flare V-groove
What type of weld is shown here?
Double V-groove
What does this symbol mean?
Arrow side V-groove, 60 degree included angle 3/8” deep with 1/2” penetration
How deep is the bevel specified here?
2”
What type of weld is shown here?
Square groove
What does this symbol mean?
Square groove, other side finished flat
What type of weld is shown here?
Flare bevel groove
What does this symbol mean?
Other side U-groove, beveled 2” deep at 20 degrees with 0 root opening
What type of weld is shown here?
Double square groove
What type of weld is shown here?
V-groove with backing
Which weld symbol specifies a flare bevel groove?
The middle symbol
What is the weld size of this flare V-groove weld?
5/8”
What type of weld is shown here?
Double U-groove
What type of weld is shown here?
J-groove
What type of weld is shown here?
Double bevel-groove
What does ‘pitch’ mean?
Center-to-center spacing between welds
If two numbers appear to the right of a weld symbol (i.e. 2-12), the second number is:
Pitch
The dimension appearing immediately to the right of the weld symbol describes the welds:
Length
What does this symbol mean?
Staggered intermittent fillet weld, 2” long, spaced 4” center-to-center
How long is each weld?
3-1/2”
If a specific welding process is to be used, this information would appear where on the welding symbol?
In the tail
How are process, procedure, and electrode requirements denoted on a welding symbol?
In the tail
If a half circle appears on the opposite side from a groove weld symbol, and the circle is filled in solid, this means:
Melt through
What does this symbol mean?
Arrow side edge weld with melt-through
Which symbol matches the weld shown?
B
What does this symbol mean?
Other side square groove with melt through
What NDE will be performed on this V-groove weld?
Visual and eddy current testing on the arrow side, in the field
For NDE, the number appearing immediately to the right of the symbol refers to what?
The length of weld to be tested
What type of NDE will be performed on this weld?
Dye penetrant and ultrasonic testing on the other side, radiography from either side
What type of NDE will be performed on this double V-groove weld?
Ultrasonic testing from either side, in the field
What type of NDE will be performed on this weld?
Ultrasonic testing on the arrow side, radiography and magnetic particle testing from either side
What type of NDE will be performed on this V-groove weld?
visual and magnetic particle testing on the other side
For an NDE symbol, a number in parenthesis refers to what?
The number of tests to be done
What are the three types of finish symbols?
Flat, convex, and concave
If the letter “G” appears above the flat contour symbol, this means:
Grind flat
What can be said about the weld contour for this symbol?
Machine convex
What does this symbol mean?
Arrow side fillet, finished flat
For a fillet weld symbol, the angled line is always drawn:
To the right
What does this symbol mean?
Arrow side fillet, finished concave
What does this symbol mean?
Arrow side fillet, finished convex
What type of weld is this?
Staggered intermittent fillet
Information to the left of a fillet weld symbol is:
The size
When a fillet weld size is specified, is it the minimum or maximum size?
Minimum
What type of weld goes on the other side?
5/16” fillet
A triangular shaped weld symbol refers to what type of weld?
Fillet
If two dimensions appear to the left of a fillet weld symbol, this signifies:
An unequal leg fillet weld
Which weld symbol specifies a plug or slot?
The top symbol
For plug welds, a number appearing above the symbol refers to what?
The angle of countersink
How many spot welds are required for this symbol?
1
Which types of welds have no arrow side significance?
Spot and seam
How many spot welds in all will be deposited on the plate?
21
3 rows of 7
A number appearing immediately to the right of a spot weld symbols refers to what?
Pitch between spots
What does a weld symbol that strattles the reference line mean?
It has no side significance
How many slot welds are required?
2
The type of weld deposited in an elongated hole is called a:
Slot weld
The size of a spot weld is determined by what?
The diameter of weld
A number in parentheses on top of a slot weld symbol indicates:
The number of welds required
What unit of measure is used to show the minimum shear strength of a spot weld?
Pounds per weld
When a spot or slot weld symbol has a number inside the box, what does the number refer to?
The depth of filling
How deep should the weld fill the slot?
5/8”
The required minimum shear strength for a spot weld is shown where in relation to the symbol?
To the left of the symbol
What does this symbol mean?
Double V-groove, ground flat
What does this symbol mean?
Other side single V-groove, beveled 2” deep with 1/8” root opening
Does this symbol refer to a CJP or PJP weld?
PJP
partial joint penetration
For this symbol, which side recieves a 35 degree bevel?
The left plate on the other side
What type of weld goes on the arrow side?
Single bevel groove with reinforcing fillet
What type of weld is always drawn on the arrow side?
Stud weld
Can a stud weld symbol be drawn on the other side?
No
Which symbol means weld all around?
a.
Which symbol means field weld?
b.
Which symbol means melt through?
c.
Which symbol means consumable insert?
d.
Which symbol means plug or slot weld?
e.
Which symbol means square groove?
a.
Which symbol means scarf?
b.
Which symbol means V-groove?
c.
Which symbol means bevel groove?
d.
Which symbol means U-groove?
e.
The size of a spot weld is determined by what?
It’s diameter
Information above the reference line refers to what?
The other side
Information below the reference line applies to what?
The arrow side
What are the three weld contour symbols?
Convex, flat and concave
What are the five types of weld contour finishing methods?
Chipping, grinding, hammering, machining and rolling
Is hammering a type of weld contour finishing method?
Yes
Is gouging a weld contour finishing method?
No
Can machining be used to achieve the required weld contour?
Yes
When welding tow round bars lengthwise, the proper weld symbol would be:
Flare V groove
A break in the arrow shaft in the symbol for a single bevel groove weld indicates:
Which member to bevel
‘CJP’ in the tail of a welding symbol means what?
Complete joint penetration
The diagonal lines used to show where to put the weld on a drawing are called:
Hatching
