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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