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BASIC WELDING SYMBOLS

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• Graphical s!"#ls $#r %&l'i() *# c#(+& *h& c#!pl&*& %&l'i() i($#r!a*i#( $r#!

*h& '&si)(&r *# *h& %&l'&r i( *&r!s #$ 'ra%i()s,

• I* '&(#*&s a s!"#l !a'& p #$ s&+&ral &l&!&(*s *# c#(+& *h& %&l'i() i(s*rc*i#(

WHAT IS A WELDING SYMBOL?

 A !&*al-.#i(i() pr#c&ss *ha* s&s *h& h&a* )&(&ra*&' " a c#!"i(a*i#( #$ #/)&(

 a(' a $&l )as *# !&l* *%# si!ilar !&*als *#)&*h&r a(' ar& i(*&)rall .#i(&'

 %h&( c##l&',

WHAT IS WELDING?

 WELD SYMBOLS: I* is a( i')raph s&' *# i('ica*& *h& *p& #$ %&l' r&ir&'

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EIG34 ELEMEN4S O WELDING SYMBOLS

 AOW

BASIC WELD SYMBOLS

DIMENSIONS AND O43E DA4A

SU77LEMEN4AY SYMBOLS

COUN4E AND INIS3 SYMBOLS

4AIL S7ECIICA4IONS

7OCESS O O43E EEENCE

EEENCE LINE

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Reference line

Basics #$ *h& %&l'i() s!"#l

O*h&r &l&!&(*s ar& #ri&(*&' %i*h r&sp&c* *# *his li(&

Arrow

 Arr#% si'&

O*h&r si'&-#pp#si*& si'&

Basic weld s!"ol

I('ica*&s *h& *p& #$ %&l'i() *# "& p&r$#r!&'

7lac&' #( c&(*&r #$ *h& r&$&r&(c& li(& &i*h&r "&l#% #r a"#+& #r #( "#*h

  si'&s,

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Di!ensions:

L&()*h-i)h*

Si9&-L&$*

Spaci() #$ *h& %&l' #r %&l' s!"#ls

I$ l&()*h is $#ll#%&' " Dash a(' a(#*h&r (!"&r :i('ica*&s c&(*&r *# c&(*&r   spaci() #$ i(*&r!i**&(* %&l's,

4h& (!"&r #$ sp#* #r pr#.&c*i#( %&l' is &(cl#s&' i( par&(*h&s&s,

S#$$le!en%ar S!"ols:

7lac&' a* *h& &(' #$ *h& r&$&r&(c& li(& a* *h& "as& #$ *h& arr#%

C#(+&s a''i*i#(al i($#r!a*i#( r&la*i+& *# *h& &/*&(* #$ %&l'i() %h&r&

*h& %&l'i() is *# "& p&r$#r!&',

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&o#n%er and finis' s!"ols:

4h& c#(*&r s!"#l is plac&' a"#+& #r "&l#% *h& %&l' s!"#l

i(ish s!"#l al%as app&ars a"#+& #r "&l#% *h& c#(*&r s!"#l

(inis' S!"ols:

C-Chippi()

G-Gri('i()

3-3a!!&ri()

M-Machi(i()

G-Gri('i()

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Tail S$ecifica%ion:

 I* %ill app&ar #( *h& &(' #$ *h& r&$&r&(c& li(& #pp#si*& *# *h& arr#% &(',

 I* is s&' *# l#ca*& sp&ci$ica*i#( pr#c&ss #$ #*h&r r&$&r&(c&

  I$ (# *ail-Wh&( (# sp&c,

S$ecifica%ion and $rocess:

 7lac&' i( *h& *ail #$ *h& %&l'i() s!"#l

 I$ *h& sp&c is )i+&( i( (#*&s #r i('ica*&' &ls&%h&r& #( *h& 'ra%i()

  i* sh#l' (#* "& s&',

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EEENCE LINE AND AOW

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BASIC WELD SYMBOLS

S>UAE WELD

ILLE4 WELD

BE?EL

?-GOO?E

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LAE BE?EL

LAE-?

C#(*i(&'@,

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DIMENSIONS AND O43E DA4A

ILLE4 SIE

ILLE4 LENG43

I 43E ILLE4 LENG43 IS OLLOWED BY A DAS3

 AND A NUMBE i,&, CEN4E-4O-CEN4E

 DIS4ANCE O IN4EMI44EN4 WELDS,

GOO?E ANGLE

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WELD ALL AOUND

IELD WELD

SU77LEMEN4AY SYMBOLS

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COUN4E AND INIS3 SYMBOLS

LUS3

CON?E CONCA?E

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4AIL S7ECIICA4IONS

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7OCESS O O43E EEENCE

EBW S4ANDS O - ELEC4ONIC BEAM WELDING

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ILLE4 WELD

 AOW SIDE

BO43 SIDES SAME ILLE4 SIE

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BO43 SIDES WI43 DI,IILE4 SIES

IILE4 SIE WI43 LENG43-IN4EMI44EN4 WELD

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ILLE4 WELD ALL AOUND