07-wis5 symbols 2007
DESCRIPTION
WIS5 Symbols 2007TRANSCRIPT
TWICSWIP 3.1WIS 5
WELDING INSPECTION
WELDING SYMBOLS BSEN ISO 22553 /AWS A2.
SECTION 8SECTION 8
One method of transferring information from the design office to the workshop could be:
This method does not give enough information and does not convey the actual or design requirements.Most countries have their own standards for symbols.
The two most common are BS EN 22553 (ISO 2553), which has now replaced BS 499 Part 2 & AWS A2.4
Please Please weld weld herehere
Weld symbols on drawings
Welded joints may be indicated:Welded joints may be indicated:
- - by detailed sketches, showing every dimensionby detailed sketches, showing every dimension
or by symbolic representationor by symbolic representation
Weld symbols on drawings
Advantages of symbolic representation:
Weld symbols on drawings
Disadvantages of symbolic representation:
• simple and accurate• should not over-complicate the drawing• no need for additional views• should give all necessary information regarding the
specific joint to be obtained
• can only be used only for standard joints• requires training for properly understanding of
symbols
WELDING SYMBOLS
BS EN ISO 22553.BS EN ISO 22553.Welded,brazed and soldered Welded,brazed and soldered
joints - joints -
Symbolic representation on Symbolic representation on drawings.drawings.
WELDING SYMBOLS
BSEN 22553 (UK & Europe)
There are 7 components to this standard;
1. THE ARROW LINE1. THE ARROW LINE
2. THE DUAL REFERENCE LINE2. THE DUAL REFERENCE LINE
3. THE ELEMENTARY SYMBOL3. THE ELEMENTARY SYMBOL
5. THE SUPPLEMENTARY SYMBOL5. THE SUPPLEMENTARY SYMBOL
6. DIMENSIONS6. DIMENSIONS
7. COMPLEMENTARY INDICATIONS7. COMPLEMENTARY INDICATIONS
4. COMBINED SYMBOLS FOR SYMMETRICAL 4. COMBINED SYMBOLS FOR SYMMETRICAL WELDSWELDS
Convention of the arrow line:Convention of the arrow line:
ARROW LINE
a) a) ShallShall touch the joint intersection touch the joint intersection
b)b) ShallShall not be parallel to the drawing not be parallel to the drawing
c)c) ShallShall point towards a single plate point towards a single plate preparation (when only one plate has preparation (when only one plate has preparation)preparation)
ARROW SIDEARROW SIDEOTHER OTHER SIDESIDE
Convention of the reference Convention of the reference line:line:
oorr
THE DUAL REFERENCE LINE
a) a) ShallShall touch the arrow line touch the arrow line
b)b) ShallShall be parallel to the bottom of the be parallel to the bottom of the drawingdrawing
c)c) There shallThere shall be a further broken line be a further broken line above or beneath the reference line , above or beneath the reference line , identification line. (Not necessary where identification line. (Not necessary where the weld is symmetrical!)the weld is symmetrical!)
BS EN 22553 - example
Other sideOther side
Arrow sideArrow side
BS EN 22553 - example
Other side joint AOther side joint A
Arrow side joint AArrow side joint AJoint AJoint A
Joint BJoint B
Arrow side joint BArrow side joint B Other side joint BOther side joint B
BS EN 22553 - example
Other side joint BOther side joint B
Arrow side joint AArrow side joint AJoint AJoint A
Joint BJoint BArrow side joint BArrow side joint B
Other side joint AOther side joint A
BS EN 22553 - example
Other sideOther side
Arrow sideArrow side
TABLE 1-ELEMENTARY SYMBOLS
Various categories of joints are characterised by an elementary symbol.
The elementary symbol is similar to the shape of the weld to be made.
Square butt weld
Weld typeWeld type SketchSketch SymbolSymbol
Single V butt weld
TABLE 1 - ELEMENTARY SYMBOLS
Single-V butt weld with broad root face
Weld type Sketch Symbol
Single bevel butt weld
Single bevel butt weld with broad root face
Backing run
TABLE 1 - ELEMENTARY SYMBOLS
Single-U
butt weld
Weld typeWeld type SketchSketch SymbolSymbol
Single-J
butt weld
Fillet weld
Surfacing
TABLE 1 - ELEMENTARY SYMBOLS
Edge weld
Weld typeWeld type SketchSketch SymbolSymbol
Fillet Fillet weldweld
Double Double VV
Double Double bevelbevel
Double UDouble U Double JDouble J
Representation of welds done from both sides of the joint intersection, touched by the arrow head
TABLE 2 - COMBINED SYMBOLS FOR SYMMETRICAL WELDS
SYMMETRICAL WELDSSYMMETRICAL WELDS
Supplementary weld Supplementary weld symbols;symbols;
Ground Ground flushflush
TABLE 3 - SUPPLEMENTARY SYMBOLS.
OROR
ConvexConvex
Supplementary weld Supplementary weld symbols; symbols;
TABLE 3 -SUPPLEMENTARY SYMBOLS
ConcaveConcave
Supplementary weld Supplementary weld symbols;symbols;Toes shall be blended smoothlyToes shall be blended smoothly
SUPPLEMENTARY SUPPLEMENTARY SYMBOLS
Supplementary weld Supplementary weld symbols;symbols;
TABLE 3 - SUPPLEMENTARY SYMBOLS
MRMR
Removable Removable backing backing strip usedstrip used
Permanent Permanent backing backing strip usedstrip used
MM
METHOD OF REPRESENTATION
ARROW LINEARROW LINE
REFERENCE LINEREFERENCE LINE
IDENTIFICATION LINEIDENTIFICATION LINE
WELD SYMBOLWELD SYMBOL
BS EN 22553 rules - example
Arrow sideArrow side
Arrow sideArrow side
BS EN 22553 rules - example
Other sideOther side
Other sideOther side
Dimensions;
Leg length prefixed by the letter z.
Design throat thickness prefixed by the letter a.
DIMENSIONS
z6z6
a4.2a4.2
55
z 8 z 8 a5a5
88
Fillet weld dimensions according BS EN Fillet weld dimensions according BS EN 2255322553
oror
88
z 8z 8oror
z 8z 8
a 5 z 8a 5 z 8
Fillet welds
88
88
Dimensions;
For intermittent fillet welds
DIMENSIONS
Number of welds (n) x Length of weld (l)Number of welds (n) x Length of weld (l)
( Distance between each weld (e))( Distance between each weld (e))
z1z100
3 x 25 ( 50 )
z 10z 10 3 x 25 3 x 25 (50)(50)
1010
2525
5050
BS EN 22553 rules - example
Dimensions;
For deep penetration fillet welds.
DIMENSIONS
s8s8
s = Effective throat s = Effective throat thicknessthickness
Dimensions;
For single vee butt welds with a broad root face (partial penetration welds).
DIMENSIONS
s6s6
s = nominal throat s = nominal throat thicknessthickness
610
PARTIAL PENETRATION WELDS
6
44
s6s6
44
INTERMITTENT FILLET WELDS
Chain intermittent fillet weld
length (l)length (l)Distance between Distance between (e)(e) aa
zz
aa n×l(en×l(e))aa n×l(en×l(e))
zz n×l(en×l(e))zz n×l(en×l(e)) ororSymbol to BS EN 22553
STAGGERED INTERMITTENT
Staggered intermittent fillet weld
length length (l)(l)
Distance(e)Distance(e) aa
zz
aa n×l n×l (e)(e)aa n×l n×l (e)(e)
zz n×l n×l (e)(e)zz n×l n×l (e)(e) oror
Symbol to BS EN 22553
COMPLEMENTARY INDICATIONS
Weld all round ( peripheral weld )Weld all round ( peripheral weld )
Site (Field) WeldSite (Field) Weld
COMPLEMENTARY INDICATIONS
COMPLEMENTARY INDICATIONS
111111
Indication of welding process to Indication of welding process to ISO 4063;ISO 4063;
MMA-MMA-111.111.
MIG-131.MIG-131. MAG-MAG-135.135.
TIG-141TIG-141FCAW-FCAW-136136
COMPLEMENTARY INDICATIONS
Indication of welding procedure
WPSWPS
COMPLEMENTARY INDICATIONS
Non Destructive Testing - other than visual
NDTNDT
Welds Arrow Side of joint, Symbol on the Solid reference line. Welds on Other Side of the joint, Symbol on the Dashed identification line.
Symbols with a Vertical Line component must be drawn with the vertical line to the Left side of the symbol
All CSA dimensions are shown to the Left of the symbol
All Linear dimensions are shown on the Right of the symbol i.e. number of welds, length of welds and distance between welds
BS EN 22553 rulesBS EN 22553 rules
The dashed line must be omitted when symmetrical welds are required
Fillet welds that are intermittent and staggered Fillet welds that are intermittent and staggered are shown by an are shown by an Elongated ZElongated Z symbol through symbol through the dual reference line.the dual reference line.
BS EN 22553 rulesBS EN 22553 rules
WELD SYMBOLS
QUESTIONS ?
BS EN 22553 FILLET WELDS
ANSWERS TO EXERCISESANSWERS TO EXERCISES
1 z6
BS EN 22553 FILLET WELDS
ANSWERS TO EXERCISESANSWERS TO EXERCISES
2 z6z6
3x25 (40)3x25 (40)
2525 4040
25254040
BS EN 22553 FILLET WELDS
ANSWERS TO EXERCISES.
3 z6
z10
3x50 (25)
3x40 (30)
50 25
40 30 40 30 40
2550 50
BS EN 22553 FILLET WELDS
ANSWERS TO EXERCISESANSWERS TO EXERCISES
4 z8
z10
3x25 (50)
2x20 (40)
20
25 50 25 50 25
2040
BS EN 22553 BUTT WELDS
ANSWERS TO EXERCISES
1 M
BS EN 22553 BUTT WELDS
ANSWERS TO EXERCISESANSWERS TO EXERCISES
2
BS EN 22553 BUTT WELDS
ANSWERS TO EXERCISESANSWERS TO EXERCISES
3s10
BS EN 22553 BUTT WELDS
ANSWERS TO EXERCISESANSWERS TO EXERCISES
4
z8
s12
z12
Welds “on arrow side” of joint go underneath the reference line while welds “the other side” of the joint, go on top of the reference line
Symbols with a vertical line component must be drawn with the vertical line to the left side of the symbol
All CSA dimensions are shown to the left of the symbol
All linear dimensions are shown on the right of the symbol i.e. number of welds, length of welds, length of any spaces
AWS A 2.4 RULES
•Welds onWelds on arrow sidearrow side of joint symbolof joint symbol belowbelow the the reference line.reference line.
•welds onwelds on other sideother side of the joint, symbolof the joint, symbol aboveabove the reference line.the reference line.
AWS A 2.4 SUMMARY
Arrow Arrow SideSide
Other Other SideSide
•Use of 3 reference lines to show sequence of operations.
AWS A 2.4 SUMMARY
1
2
UT
3
•Staggered intermittent fillet welds are indicated by the symbol about the reference line.
AWS A 2.4 SUMMARY
•Fillet weld distances are measured center to center
AWS A 2.4 SUMMARY
•Definite break in the arrow line when only one side is prepared.
AWS A 2.4 SUMMARY
•Dimensions may be shown in imperial measurement.
AWS A 2.4 SUMMARY
3/4”
or
0.75"
NDT PRACTICLE.
QUESTIONS ?QUESTIONS ?
WELD SYMBOLS
QUESTIONS ?
Convention of the reference line AWS Convention of the reference line AWS A 2.4 A 2.4
Reference line
a) a) ShallShall touch the arrow line touch the arrow line
b) b) ShallShall be parallel to the bottom of the be parallel to the bottom of the drawingdrawing
10 3 x 50 (70)
AWS A 2.4 rules-example
10
50
70
8888
55
5 x 85 x 8
88
Fillet weld dimensions according AWS A 2.4
Fillet weldsFillet welds
5 leg on 5 leg on vertical vertical membermember
Intermittent fillet welds
Chain intermittent fillet weld
length (l)
pitch (e)
zz
zz l - el - ezz l - el - e
Symbol to AWS A2.4
Intermittent fillet welds
Staggered intermittent fillet weld
length length (l)(l)
pitch pitch (e)(e)
zz
zz l - el - ezz l - el - e
Symbol to AWS A2.4
e/2e/2
Example:Example:
Draw the symbols for the weld given as shown below to the specification BS EN 22553
Weld drawingWeld drawing
Symbol Symbol DrawingDrawing
111111
Weld symbols on drawings
MMMMAA
Solution BS EN Solution BS EN 2255322553 z z
1010s 30s 30
s 20s 20 z z 1010
a 7 z a 7 z 1010s 35s 35
s 15s 15z 10z 10
Weld symbols on drawingsWeld symbols on drawings
135/111135/111
Note that the arrow Note that the arrow lines are not drawn lines are not drawn correctly in the notes correctly in the notes on page 8.7on page 8.7
Partial penetration single-V buttPartial penetration single-V butt‘‘S’ indicates the depth of penetrationS’ indicates the depth of penetration
1015
BS EN 22553 Welding Symbols
1013
s10
Solution AWS Solution AWS A2.4A2.4 1010
3030
20201010
1010
3535
15151010
Weld symbols on drawingsWeld symbols on drawings
10
20
30303535
1515
7
Student symbols exerciseStudent symbols exercise
Complete a symbols drawing for the welded joint given below to AWS A2.4 & BS EN 22553
All fillet weld leg lengths are 10 mmAll fillet weld leg lengths are 10 mm
Weld symbols on drawingsWeld symbols on drawings