Welding Symbol

Welded, brazed and soldered joints Symbolic representation on drawings

(IS0 2553 : 1992) English version of DIN EN 22553

ICs 01.100.20; 25.160.40

Descriptors: Welds, soldered joints, brazed joints, symbols.

Schweiß- und Lötnähte - Symbolische Darstellung in Zeichnungen (IS0 2553 : 1992)

- DIN

EN 22553 -

Supersedes August 1994 edition.

European Standard EN 22553: 1994 has the status of a DIN Standard.

National foreword This standard has been published in accordance with a decision taken by CEN/TC 121 to adopt, without alteration, International Standard IS0 2553 as a European Standard. The responsible German body involved in its preparation was the Normenausschuß Schweißtechnik (Welding Standards Committee). It should be noted that a major amendment has been made as regards the position of the symbol relative to the reference line. Hitherto, the symbol has to be placed on the continuous line, now it is to be placed on the dashed line. The DIN Standards corresponding to the International Standards referred to in clause 2 of the EN are as follows: IS0 Standard DIN Standard IS0 128 IS0 544 DIN EN 20544 IS0 1302 DIN I S 0 1302 IS0 2560 DIN EN 499

DIN IS0 10209-2, DIN 6-1 and DIN 6-2, DIN 15-1 and DIN 15-2

IS0 3098-1 DIN 6776-1 DIN 3581 DIN 8556-1 IS0 4063 DIN EN 24063 IS0 5817 DIN EN 2581 7 IS0 6947 DIN IS0 6947') IS0 8167 DIN EN 28167 IS0 10042 DIN EN 30042

Amendments Amendments have been made only to the German version of DIN EN 22553, August 1994 edition.

Previous editions DIN 1911: 1927-04, 1959-10; DIN 1912-1: 1927-04,1932-05,1937-05, 1956-05,1960-07; DIN 1912-2: 1927-04, 1932-05,1937-05; DIN 1912-3: 1961-03,1982-08; DIN 1912-5: 1976-06, 1979.02,1987-12; Supplement 1 to DIN 1912-5: 1987-12; DIN 1912-6: 1976-06, 1979-02; DIN EN 22553: 1994-08.

Standards referred to (and not included in Normative references and Annex ZA) DIN 6-1 DIN 6-2 DIN 15-1 DIN 15-2 DIN 6776-1 DIN 8556-1

Technical drawings - Representation in normal projection - Views and special representations Technical drawings - Representation in normal projection - Sectional views Technical drawings - Lines - Basic principles Technical drawings - Lines - General application Technical drawings - Lettering - Characters Filler metals for welding stainless and heat resisting steel - Designation and technical delivery conditions

*) At present at the stage of draft.

Continued overleaf. EN comprises 53 pages.

r I I O No part of this standard may be reproduced without the prior permission of Ref. No. DIN EN 22553: 1997-03 DIN Deutsches Institut fur Normung e.V., Berlin. Sales No. I 1 16 English price group 16 ûeuth Verlag GmbH, Berlin, has the exclusive right of sale for German Standards (DIN-Nonnen). 11.97 Reproduced by IHS under license with DIN ENG

License provided by I.H.S. GermanyFor Internal Use Only

Page 2 DIN EN 22553 : 1997-03

DIN EN 499 DIN EN 20544 DIN EN 24063

DIN EN 25817 DIN EN 28167 DIN EN 30042

Covered electrodes for manual metal arc welding of non alloy and fine grain steels - Classification Filler materials for manual welding - Size requirements (IS0 544: 1989) Welding, brazing, soldering and braze welding of metals - List of process names and reference numbers for use in technical documentation (IS0 4063: 1990) Arc-welded joints in steel - Guidance on quality levels for imperfections (IS0 5817:1992) Projections for resistance welding (IS0 8167: 1989) Arc-welded joints in aluminium and its weldable alloys - Guidance on quality levels for imperfections (IS0 10042 : 1992)

Reproduced by IHS under license with DIN ENG


EUROPEAN CTANDARD NORME EUROPÉENNE EUROPAISCHE NORM

EN 22553

May 1994

ICs 01.100.20: 25.160.40

Descriptors: Welds, soldered joints, brazed joints, symbols.

English version

Welded, brazed and soldered joints Symbolic representation on drawings

(IS0 2553 : 1992)

Joints soudés et brasés - Répresentations symboliques sur les Darstellung in Zeichnungen dessins (IS0 2553 : 1992)

Schweiß- und Lötnähte - Symbolische

(IS0 2553 : 1992)

This European Standard was approved by CEN on 1994-05-12 and is identical to the IS0 Standard as referred to. CEN members are bound to comply with the CENXENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. The European Standards exist in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Por- tugal, Spain, Sweden, Switzerland, and the United Kingdom.

(EN European Committee for Standardization

Comité Européen de Normalisation Europäisches Komitee für Normung

Central Secretariat: rue de Stassart 36, B-1050 Brussels

O 1994. CEN - All rights of exploitation in any form and by any means reserved worldwide for CEN national members.

Ref. No. EN 22553: 1994 E



Page 2 EN 22553 : 1994

Foreword In 1993, International Standard IS0 2553 : 1992 Welded, brazed and soldered joints - Symbolic representation on drawings was submitted to the Unique Acceptance Procedure. The result was positive. This European Standard has been prepared under a Mandate given to CEN by the Commission of the European Communities and the European Free Trade Association and supports essential requirements of the relevant EC Directives. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, and conflicting national standards withdrawn, by November 1994 at the latest. In accordance with the CENKENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom.

Endorsement notice The text of the International Standard IS0 2553 : 1992 was approved by CEN as a European Standard without any modifica- tion.

NOTE: Normative references to international publications are listed in Annex ZA (normative).



I S 0 2553:1992(E)

Contents

1 Scope 1

Paar?

2 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

3 General ........................................................................... 1

4 Symbols ....................................................................... 2

4.1 Elementary symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

4.2 Combinations of eleinentaiy symbols 5

4.3 Sup p I e ment a 1 \it s y rn 1101 s 6

5 Position of ihe symbols o11 diawingc 8

5.1 General 8

5.2 Relationship between the arrow line and the joint . . . . . . . . . . 8

5.3 Position of the arrow line 10

5.4 Position of the reference line 10

5.5 Position of lhe r;ynihol with regard to ttia reference line .. 11

6 Dimensioning of weldc 12

6.1 General riiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

6.2 Main dimension., to be sliowii 12

7 Complementary indications 18

7.1 Peripheral welds 18

7.2 Field or site welds 18

7.3 Indication of the welding process 18

7.4 Sequence of infoimation iii the tail of the i-efei-ence mark 18

8 Examples for applicalion of spot and wain loints 19



IS0 2553:1992(E)

Annexes

A Examples of use of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

€3 Guidance for converting drawings riiade in accordance with I S 0 2553:1974 into t h e new system in accordance with IS0 2553:1991 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

iii



1 Scope

This International Standard prescribes tlie rules lo be applied for the symbolic representation of welded. hrnzed and soldered joints on di-awings.

refererice numbers for symbolic representation or) drawings.

IS0 5817:1992. Arc-welded joirits in steel - Guidance or1 quality levels for impcrfeciions.

IS0 6947:1990, Welds - Working positioris niiioris of angles of slope and rotation.

Defi-

2 Normative references IS0 8167:1989. Projections for resistance welding

T lie fol low i ng s t a nd a rds conta in p ravi sions which. through refer-ence in this text. constitute provisions of this Iiiteriiational Standard. At the timt? of publi- caiion. the editions indicated were valid. All stan- dai-ds are subject to revision. arid parties io agi-eenieiits based on this International Standard are encouraged io investigate the possibility of ap- plying the most recent editions of the slaiidards indicated below. Members of IEC aiid IS0 maintain registers of currently valid International Standards.

IS0 128: 1982, Technical drawings General principles of presentation.

IS0 541: 1989. Filler niatel-ials for maiwal welding - Size reqiiir-ements

IS0 1302.1978, Technical drawings -- Meíliod o f indicating surface iexfwe on drawings

IS0 2560 1973. Covered electrodes for nianual arc welding oí mild steel arid low alloy steel -- Cod? of symbols for idenlificaiion

Is0 3008-1 1974, ïec/inica/ drawings - /Letienna - Part 1 Crirrentiy used characters

I S 0 3581.1976, Covered electrodes for manual aic welding of stairiless arid other sirnilar 1iigIi alloy Sfeels - Code O f SyIH/JO/S for iderifificalion

IS0 4063: 1990. Welding. brazing. solderitig and braze welding of rneials -- NonierJclature o/ processes aiid

1) To be publislieci __---

IS0 10042:--". Arc-welded joints in aluminium and ifs weldable alloys -- Gil idmce or1 quality levels for iniperíectionx

3 General

3.1 Joiiits rnay be indicated with the general rec- oinmendatioiis for lechnical drawings. However, lor the purpose of siniplificalion. it is atlvisable to adopt. for usual joints. the syinholic representation de- scribed in this International Standard.

3.2 The syniholic representation shall give clearly all necessary indications regarding the specific joint to be ohlaiiiad wiiliout over-burdening the drawing with notes 01- showing an additional view.

3.3 This syniholic representation includes an elementary symbol which may he completed by

- a siipplemcritary symbol:

--- A meqiis of sliowiiig dimeiisions:

- sonie cornple nient a ry indications (pa rticu larly for workshop drawings)

3.4 :n order In simplify tlie drawings as niucti as possible it is recomnientled lha1 reíerences be rnade to specific instructions ar particular specifications givinq all details of tlie preparation of edges to b e

1 Reproduced by IHS under license with DIN ENG


IS0 2553:1992(E)

welded. brazed and soldered aiidlor welding. hraz- ing and soldering proccdirrec. rattier than showing these indicatioris on the drawings of the welded paris.

I f there are no ciich incti-uctioric, tlie diniensioris re- lating to the preparation of the edges to be welded. brazed and soldei-ed aiid/or weldirig. brazing and soldering procedures can be close to ihe symbol.

4 Symbols

4.1 Elementary symbols

The various categories 01 joints are characlerized by a symbol which. in general. is similar to the shape of the weld to be made.

No.

1

2

3

4

5

6

7

The symbol shall riot be taken to prejudge the process to be eniploycd

The elenieritary syiiihols are shown in table 1

If íhe joiiii +Iiould iiot tie spcciíied brit only he rep- resented that the joint will be welded. brazed or soldered the following symbol shall be tised.

Table 1 - Elementary symbols Designation

Butt weld between plates with raised edges') : edge flanged weld /USAI (the raised edges being melted down completely)

___

Square butt weld

Single-V butt weld

Single-bevel butt weld

Single-V butt weld with broad root face

Single-bevel butt weld with broad root face

Single-U butt weld (parallel or sloping sides)

--

Illustration - - . - -. - . _. __ . . .- e

V

V

Y

Y



IS0 2553:1992(E)

- No.

8

9

10

- __

l i

12

_ _

13

14

15

Designatioii

Single4 biitt weld

Backing run; hack or backing weld IUSAI

Fillet weld

Plug weld. plug or slot weld /USA/

_____

spot weld

Seain weid

~ _ _ _ _ -

Steep-flanked sinqle-V butt weid

.. -. - .- .. .. __ - -.. - -

Steepflanked sinqle-bevel butt weld

Illiistration ~

6- --- - &

Symbol -____.

W-

n

e



IS0 2553:1992(E)

1) welds (symbol 2) with the weld thickness ,Y shown (see tables)

Butt welds between plates with raised edges (symbol 1 ) not compleiely penetrated are symboli7ed as square butt

I

No.

16

17

18

19

20

Designation ~

Edge weld

~ - _ _ _ _ _ ~

Surfacing

Surface joint

Inclined joint

~~

Fold joint

~~

Illustration

a /

Symbol



I S 0 25531 992( E)

4.2 Combinations of elementary symbols

When required. combinations of elementary cyinbolc can be tised

The elementary syt11bols are to be coinhined for

table 2 and applications for symbolic representation in lableA.2

NOTE 1 Table2 gives a collection oí combinations of elementary symbols for symmetrical welds For the sym- hoiic representation tile elenlentary Symbols are arranged

from Iioth in a arranging symmetrically at the reference line (see tableA.2). For the use of symbols out of symbolic representation the symbols may be the applicable elententary symbols syminetrical to

the reference Iitie. Typical examples are given in without the re,erence line

Table 2 - Combined symbols for symmetrical welds (examples)

I Designation Illustration

Double-V butt weld (X weld)

----- ---+ I- -

Double-bevel butt weld

Double-V but! weld with broad root face i @ ~ _ _ _ _ _ _ - _ _ _ _ _ ~ - -

@ Double-bevel butt weld with broad root face

I Double-U butt weld

Symbol - __

X K x K



I S 0 2553:1992(E)

4.3 Supplementary symbols

Elementary synibolc may be completed by a symbol characterizitiy the shape of the external sui-face or the shape of the weld

The recommended supplementary symbols are given in table 3

The absence of a siippleinentary symbol means that the shape of the weld surface does not need lo be indicated precisely.

Examples of combinations of elementary and supplementary symbols are given in tables 4 and A.3.

NOTE 2 Although i t is not forbidden ta asmiate sev- eral symbols. i t is beller to represent the weid on a sep- arate sketch when symbolization becomes too difficult.

Table 3 - supplementary symbols Shape of weld surface or weld

-- - a) Flat (usually finished flush)

b) Coiivex

c) Concave

d) Toes shall be blended smootlily

__ __ --__- e) Permanent backing strip used

- __

f) Removable hacking strip used



IS0 2553:1992(E)

Designation ___ -

Flat (flush) single-\/ butt weld

_ _ _ _ _ _ _ ~

Convex double-V weld

__

Concave fillet weld

__

Flat (flush) single-V butt weld with flat (flush) backing rur

_-_

Single-V butt weld with broad rooi face and hacking run

Table4 gives exainplcs of application of the sup- plementaty symbols.

Table 4 - Examples of application of supplementary symbols

Flush finished single-V huit weld

Fillet weld with smooth blended face

. . -~ -. Illwîration

Symbol in accordance with IS0 1302; initpad of this symhol the main symbol d- can be used I

Symbol

V n

W X

¿ 'I

V



I S 0 25531992(E)

5

5.1 General

The symbols covered by these riiles form only part of the complete niethod of representation (figure 1). which comprises in addition to the symbol (3) ¡iself:

Position of the symbols on drawings

an arrow line (I) per joint (see figrire:! and figure 3):

a dual reference line. lines, one continuous ception, see note 3);

a certain number of tional signs.

consisting of two parallel and one dashed (2) (ex-

dimensions and conven-

NOTES

3 The dashed line can be drawn either above or beneath the continuous I i ne ___________. (see also 5.5 and annex 8).

For symmetrical welds. the dashed line is unnecessary and should be omitted.

4 The thickness of lines for arrow line. reference line, symbol and lettering shall be in accordance with the thickness of line for dimensioning in accordance with IS0 128 and IS0 3098-1. respectively.

The purpose o f the following rcrles is to define the location of welds by specifying

-- the position of the arrow line:

- the position of the reference line:

- the position of the symbol.

The arrow line and the refel-ence line form the complete reference mark. II details are given. e.g. for processes. acceptance levels. position. filler and auxiliary materiais (see clause 7). a tail shall be added at the end of the reference line.

5.2 the joint

Relationship between the arrow line and

The examples given in figure 2 and figure 3 explain the meaning of the terms

- "Arrow side" of the joint;

- "Other side" of the joint

NOTE 5 The position of the arrow in these figures is chosen for purposes of clarity. Normally. i t would be placed immediately adjacent to the joint.

NOTE 6 See figure 2.



IS0 25531 992(E)

2a 3

Figure 1 - Method of representation

“Other “AITOW

a) Weidonthesnowside bl WeMontheothcrside

Figure 2 - T joint with one fillet weld

“‘Other * “Arrow side

“ A r m side of joint 8” of j0irit E“

ai

Figure 3 - Cruciform joint

”Orner cjde “Arrow side

h)

with two fillet welds



IS0 2553:1992(E)

5.3 Position of the arrow line

The position of lhe arrow line with i-espect lo the weid is generally of no special cigiiificance [see figures 4 a) and 4 b)]. However. in the case of welds of types 4, fi and 8 (see table i). the arrow line shall point towards the plate which is prepared [see figures 4c) and 4 d ) J .

The arrow line

- joins one end of lhe continuous reference line such Ihat i t forms an angle with it:

- shall be completed by an arrow head

5.4 Posit ion of the reference l i ne

The reference line shall preferably be drawn parallel to the bottom edge of the drawing. or if impossible perpendicular.

ai b l

Cl d)

Figure 4 - Position of the arrow line



IS0 2553:1992(E)

5.5 re fe rence l ine

The symbol is to be placed either above or beneath the i-efererice line. in accordance with tlie lollowing regulation.

- The symbol is placed on tlie continuous line side of the reference line ií the weld (weld lace) is on the arrow side oí ihe joint [see figure 5 a)].

Posi t ion of the symbol with r e g a r d to the -- The symbol is placed on lhe dashed line side if the weld (weld face) is on the other side of the joint [see figure 5 b)].

NOTE 7 In the case oí spot welds made by projection welding. the projeclion surface is to be considered as the external surface of the weld.

bl Tobewelded on the other ads

Figure 5 - Position of the symbol according to the reference line



I S 0 2553:1992(E)

6 Dimensioning of welds

6.1 General rules

Each weld synibol may be accompanied by a certain n imber of dimensions

These dimensions are written as follows, in accordance with figure 6:

a) lhe main dimensions relative to the cross-section are written on the left-hand side of (¡.e. hefore) the symbol;

b) longitudinal dimensions are written on the right- hand side of (¡.e. after) lhe symbol.

The nielhod of indicating the main dimensions is defined in tables. The rules for setting down these dimensions are also given in this table.

Figure 6 - Examples of the principle

Other dirneiisions of less importance may be indicated i f necessary.

6.2 Main dimensions to be shown

The dimension that locales the weld in relation to the edge of the sheet shall not appear in the symbolization but on the drawing.

6.2.1 The absence of any indication following the symbol signiíies that lhe weld is to be continuous over the whole length of the workpiece.

6.2.2 In the absence of any indication to the con- trary, butt welds are to have complete penetration.

6.2.3 For lhe fillet welds there are two metliods to indicate dimensions (see figure 7) Therefore. the letters u or z shall always be placed in front oí the value of the corresponding dimension as follows:

To indicate deep penetration of fillet welds the throat thickness is .r, see figure 8.

6.2.4 In the case of plug or slot welds with bevelled edges. it is lhe dimension at the bottom of the hole which shall be taken into consideration

Figure 7 - Methods of indicating dimensions for fillet welds



I S 0 25531 992(E)

NOTE - For deep penetration of fillet welds. the dimensions are indicated as .da6 h, for example.

Figure 8 - Methods of indicating dimensions for deep penetration of fillet welds



IS0 2553:1992(E)

Table 5 - Main dimensions Designation of welds

But1 weld

Butt weld between plates with raised edges

Continuous fillet weld

__

Inierrnit!eiit fillet weld

Illustration

1



IS0 25531 992(E)

Definition

s : niiiiiinum distance from the surface of the part to the bottom of the penetration. which cannot be greater than the thickness of the thinner part.

.< : minimum distance from the external surface of the weld to tile bottom oí the penetration.

0 heiglil of the largest isosceles triangle that can be inscribed in the section

side of the largest isosceles triangle that can he inscribed in the section.

I

rc)

n number of weld element5

length of weld (without end craters).

distance between adjacent weld elements

(see No. 3) L .

Inscription

V (see 6.2.1 and 6.2.2)

S I I (see 6.2.1)

f Y (see 6.2.1)

s II [see 6.2.1 and footnote 1) to table11

a n 2 n

(see 6.2.1 and 6.2.3)

a n n x l k l

zn n 4 e ) (see 6.2.3)



IS0 2553:1992(E)

Table 5 - Main dimensions (concluded) Designation of welds

Staggered intermitlenl fillet weld

__ __-

Pliig or clot weld

Seam weld

-.

Plua weld

Spot weld

~~

Illustration

‘e)



IS0 2553:1992(E)

Definition

I l : \

(see No. 3) z :

c :

(see No 4)

width of slot

r

(see No 4)

width of weld

I7 y (see No. 4)

( P ) : spacing

d : diameter of spot

--

Inscription

(see 6.2.3)



IS0 2553:1992(E)

7 Complementary indications

Complementary indications may be necessaiy 111

order to speciíy some other characteristics of welds For example

7.1 Peripheral welds

When the weld is to be ninde all around a part, the symbol is a circle, as shown in figure9

Figure 9 - Indication of peripheral weld

7.2 Field or site welds

A flag is to be tised lo indicate the field or site weld. as shown in figure Ill.

Figure 10 - Indication of field or cite weld

7.3

If required. the welding process is to be symbolized by a number written between the two branches of a

Indication of the welding process

fork. at the end of lhe leference line remote írom the reference line.

Figure Il gives an example of its use

The list giving tlie correspondance between the numbers and the process is given in IS0 4063.

Figure 11 - Indication of welding process

7.4 reference mark

Sequence of information in the tail of the

The information for joints and the dimensions can be supplemented by fui-ther information in the tail. in the following order:

- process (e g in accordance with IS0 4063);

- acceptance level (e.g in accordance with IS0 5817 and IS0 10042):

.- working position (e g in accordance with IS0 fi947):

- filler materials (e g in accordance with IS0 544. I S 0 2560. IS0 3581)

The individual itenis are to he separated by / (solidus),

In addition. a closed tail is possible which indicates Specific inslructioii í e .g . procedure sheet) by a reference sign, see figure 12.

Figure 12 - Reference information



I S 0 2553:1992( E)

EXAMPLE

Single-V butt weld with backing run (see figure 13). produced by manual metal-arc welding (reference number 111 in accordance with IS0 4063), required acceptance level in accordance with IS0 5817, flat position PA in accordance with IS0 6917. covered electrode IS0 2560-E 51 2 RR 22.

Hlustration

/ /

8 seam joints

Examples for application of spot and

In the case of seam and spot joints (welded, brazed or soldered). joints are niade at the interface between the two lapped parts or by melt-through of one of the two paris (see figures 14 and 15).

Symbolic representation

Front view

11111SO 5B17-DI

IS0 ï5ül-E 51 2 RR P

Top view

Figure 13 - Single4 butt weid with backing run

I, __ - - ---- -- -.- y------ - -

I J I

I I 1

Tog view

Figure 14 - Intermittent resistance seam welds



IS0 2553:1992(€)

al Re?iStancespotwelds

Ilustration

Front view

Symbolic regrewrit.tlon

bl Fusiorr-weMedspotwdds

SymboYc reprsraitation

Figure 15 - Spot welds



IS0 2553:1992(E)



IS0 2553:1992( E)

Annex A (informative)

Examples of use of symbols

Tables A 1 to A 4 give soriie examples oí the ure oí symbols. The represantaiioiis shown are given simply for explanation

Table A. l - Examples of the use of elementary symbols -

No.

i

2

3

4

-

Designation Syinbol

(Numbers refer to table 1)

Butt weld between plates with

raised edges

Square biitt weld

I! 2

Illustration

U epresentation



IS0 25531 992(E)

Symbolization

____

either or



IS0 2553:1992(E)

Table A. l - Examdes of the use of elementary symbols (continued) -

No.

-

5

6

-

7

8

--

9

Desigiiatioii Symbol


Single-V butt weld

V 3

Single-bevel butt weld

V 4

Illustration

Representation



I S 0 25531992(E)

- Symbolization

e¡ ther



I S 0 25531 992(E)

Table A.1 - Examples of the use of elementary symbols (continued)

Designation Symbol


Single-bevel butt weid

4

Single-V butt weld with broad

root face

5

Single-bevel butt weld with broad

root face

Y 6

Single-U butt weld

Y 7

Illustratiori

~ ~~~

Representation

+-a- -=-&- I

HJ



IS0 2553:1992( E)

Syinboliration

e¡ ther



IS0 2553:1992( E)

Table A . l - Examples of the use of elementary r

No.

-

15

16

17

18

-

Designation Symbol


Single-J butt weld

8

Fillet weld

n 10

Illustration

nbols (continued) Representation

....;1 ii,



I S 0 2553:1992( E)

r- Symbolization

- ___

either



I S 0 25531 992(E)

Table A . l - Examples of the use of elementary symbols (continued)

Designation Symbol


Fillet weld

n 10

Illustration

Representation



IS0 2553:1992(E)

either

__ --- -.

or



IS0 25531992(E)

-

No.

-

22

-

23

-

24

25

I

Table A.l - Examdes of the use of elementary symbols (conlirwed)

Designation Symbol


Plug weld

n 11

Spot weld

O 12

Illustration

Representation



I S 0 25531992(E)

Symbolization I _._

either

,- P==

33



IS0 2553:1992(E)

Table A. l - Examples of the use of elementary : -

No.

26

27

-

Designation Symbol


Seam weld

# 13

Illustration

nbols (coricliided)

Representation



IS0 2553:1992(E)

Symbolization r--



I S 0 2553:1992(E)

No.

1

2

3

-

4

-

5

-

Table A.2 - Examples of combinations of elementary svmbols

Designation Symbol


Butt weld between plates with raised

edges

1 and backing run

w 9 1-9

- __ Square hutî weld

II 2 welded from both sides

2-2

Single-V hiitt weld

v3 and backing run

U 9 3-9

Double-V butt weld

v3 (X weld)

3-3

Illustration

- - Representation

.-



IS0 25531992(E)

I Symbolization

either

t--- i

or



IS0 25531992(E)

Table A.2 - Examples of combinations of elementary symbols (continued) -

No.

-

6

7

8

9

10

Designation Symbol


Double bevel butt weld

v4 (K weld)

4-4

Double V butt weid with broad root face

5 s Double bevel butt weld

with broad root face

6 - 6 Double U butt weld

Y7

1 - 7

Iliiisîration

Representation



IS0 2553:1992(E)

Symbolization

either or



IS0 2553: 1 992( E)

Table A.2 - Exarndes of combinations of elernentan -

No.

-

i l

12

--

13

14

Designation Syiiibol

(Nuiribers reler to table 1)

Double J butt weld

8 -8

Single V butt weld

v3 and single U butt weld

Y7 3-7

Fillet weld

and fillet weld

n 10 10-10

illustration

iymbols (concluded) Representation



IS0 25531992(E)

r----- Symbolization

I either

LEI

or



I S 0 2553:1992(E)

Table A.3 - Examples of combinations of element;

Symbol Illustration

and supplementary symbols Representation



IS0 25531992(E)

S yinbolization

e¡ t her

AL t i -

-

or

-L 1 I

I I



IS0 25531992(E)

Table A.3 - Examples of combinations of elementary and supplementary symbols (concluded)

Symbol

V IMRI

Iliiistratioii

Representation

I I



IS0 25531992(E)

Symbolization

_____ either

- __ . __ or



I S 0 25531992(E)

No.

1

2

_-

3

4

5

-

Table A.4 - Examples of exceptional cases

Illustration

Representation

+-++ -4

-



IS0 2553:1992(E)

Syin bolkation

or incorrect

not recommended



I S 0 2553:1992(E)

Table A.4 - Examples of exceptional cases (com:luded)

Illustration

Representation

I



IS0 2553:1992(E)

either

not recommended

iiot ri?conimended

1 \

Symbolization

__ - ._ ._

incorrect



IS0 2553:í 992(E)

Annex B (informative)

Guidance for converting drawings made in accordance with IS0 2553:1974 into the new system in accordance with I S 0 2553:1991

As an interim solution for converting old drawings made in accordance with IC0 2553:1974. Welds -- Symbolic fepfesentafion on drawings, the following eXampleS show acceptable methods This shall. however, be considered as a provisional solution only during the change-over period

For new drawings, the dual-reference line ___________. shall always be used

J Ø Figure 8.1 - Weid on arrow side

z?h300 7- /

Figure 8.2 - Weid on other side

NOTE 8 When converting drawings made to one of the methods E or A in IS0 2553:1974 into this new system. it is es- pecially iinportant for fillet welds io add the letter n or z in front of that dimension as the I J S ~ of dimensioning leg length (2) o r tliroat thickness (al has been connected with the position of weld symbol on the reference line



Page 53 EN 22553 : 1994

Annex ZA (normative) Normative references to international publications with their relevant European publications

This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments).

Publica tioa

Is0 544

BO 4063

Is0 5817

Is0 8167

Is0 10042

yaar

1989

1990

1992

1989

1992

Filler materials of manuai weldmg- size requirements

Weldmg, brazing, soldering, and braze wefdmg

rence numbers for symbolic representation on Of metals - N O I I Y W I C ~ ~ ~ U ~ of m a and refe-

drawings

Arc- weided joints in steel - Guidance on quaiity levels for imperfections

Projactions for &tance welding

Arc-welded joints in iluminium and its weldabb alloys - Guidance on quility levels for imperfec- tiona

E"D

EN 20544

EN 24063

EN 25817

EN 28167

EN 30042

m

1991

1991

1992

1992

1994



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