Welding Symbol B231013

8/13/2019 Welding Symbol B231013

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Tetra Pak Corporate Standard

Issued byTetra Pak Packaging Solutio ns ABS&PMD

Orientation

This issue differs from issue 4 in that: Smaller corrections have been made.

This standard is an extract from ISO 2553:1992.

This standard gives rules for how welds should be indicated on drawing.

Contents

1. General

2. The structure of symbolic representation of welds

3. Dimensioning of welds

4. Examples

1. General

In its simplest form the weld designation indicates:

the shape of the joint on which the weld is to be applied

from which side the weld is to be applied

that the weld should have complete penetration

By means of additional symbols, measurement indications and supplementary designations the welddesignation may determine:

the form of the weld surface

the size of the cross-section of the weld

penetration depth

limited weld length

welding class

welding process

Stig Adelhammar Max Dahlquist 2007-06-01 5

B 2310.13

Welds

Symbolic representation on drawings


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Corporate Standard Tetra PakB 2310.13


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2. The structure of symbolic representation of welds

The symbolic representation of weld always includes:

Arrow line (see clause 2.1)

Reference line (see clause 2.2)

Elementary symbol (see clause 2.3)

The thickness of lines for arrow line, reference line, symbol and lettering shall be in accordance with

the thickness of line for dimensioning according to Drawing Standard (DS 206.10).

Elementary symbol

Reference line

Arrow line

Figure 1


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2.1 Arrow line

The position in relation to the weld is generally of no special significance. However when only one

part of the weld joint in a butt weld according to No. 4, 6 and 8 (table 1) is prepared, the arrow line

shall point towards the prepared part. See figure 3.

Prepared weld joint Symbolization in view Symbolization in section

Figure 3

The arrow line

joins one end of the continuous line of the reference line. The arrow line and the reference lineshall form an angle with each other. See figure 1

ends with an arrow-head.

2.2 Reference line

The reference line consists of two parallel lines, one continuous and one dashed. See figure 1.

The continuous line represent the arrow side of the weld.

The dashed line represents the other side of the weld and is drawn either beneath or above the con-

tinuous line. On one and the same drawing only one way shall be used. For symmetrical welds the

dashed line is omitted.

If possible the reference line shall be drawn parallel to the bottom edge of the drawing.

Figure 4 explains the meaning of the terms:

Arrow side of the weld.

Other side of the weld.


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Arrow sidefor weld A

Other sidefor weld A

Other sidefor weld A

Arrow sidefor weld B

Weld A

Weld A

Weld B

Arrow sidefor weld B

Arrow sidefor weld A

Weld B

Other sidefor weld B

Other sidefor weld B

Tetra Pak Corporate Standard B 2310.13

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Figure 4 Arrow side and the other side of the weld

The symbol can be placed either above or beneath the reference line.

When the symbol is placed on the continuous line, the weld face is on the arrow side of the joint. See

figure 5.

Desired weld Symbolization in view Symbolization in section

Figure 5


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When the symbol is placed on the dashed line, the weld face is on the other side of the joint. See figure 6.

Note. In the case of projection welding the projection surface is to be considered as the external surface of the weld.


Figure 6

For symmetrical welds the dashed line is omitted. See figure 7.


Figure 7


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2.3 Elementary symbols

The weld is characterized by an elementary symbol which, is general, is similar to the shape of the

joint preparation. Combinations of elementary symbols can be used.

The elementary symbols are shown in table 1.

The elementary symbol shall not be taken to prejudge the process to be employed.

Examples of use:

Elementary symbols, see table 5.

Combinations of elementary symbols, see table 6.

Table 1: Elementary symbols

No. Designation Illustration Symbol

1 Butt weld between plates with raised edges

2 Square butt weld

3 Single-V butt weld

4 Single- bevel butt weld

5 Single-V butt weld with broad root face

6 Single-bevel butt weld with broad root face

7 Single-U butt weld


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8 Single-J butt weld

9 Backing run; back or backing weld/USA/

10 Fillet weld

11 Plug weld; plug or slot weld/USA/

12 Spot weld

13 Seam weld

No. Designation Illustration Symbol


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2.4 Supplementary symbols and complementary indications

The elementary symbol may be completed by supplementary symbols, characterizing the shape of

the external surface of the weld (see table 2 and figure 8).

The absence of a supplementary symbol means that no particular shape of the external surface of the

weld is required. It may thus be either flat, convex or concave.

Complementary indications may be necessary in order to specify some other characteristics. If a

welding process (B 2310.16) or a welding class (B 2310.63or B 2310.64) is indicated the continu-

ous reference line is completed by two inclined lines, which form a 90 angle with each other. (See

table 3 and figure 8).

Table 2:

Flat weld (weld with flat weld face) Convex weld (weld with convex weld

face)

Concave weld (weld with concave weld

face)

Supplementary indications

Table 3:

Site weld Peripheral weld

(weld all around a

part)

Welding process

according to

B 2310.16

Welding class

according to

B 2310.63

Reference for especial welding pro-

cesses

B H1/B 2316.22

Complementary indications


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Welding process

Desired weld

Peripheral weld 11-B

H1/B 2316.22

Welding class

Place for information or reference

Supplementary symbol

Site weld

Supplementary symbols and complementary indications



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Figure 8


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3. Dimensioning of welds

The symbolic may include a certain number of dimensions. The rules for setting down the dimen-

sions are given in table 4.

Dimensions relative to the cross-section are written on the left-hand side of the elementary symbol.

Other dimensions are written on the right-hand side of the symbol.

A butt weld without any indication to the left of the elementary symbol shall have full penetration.

The absence of any indication to the right of the elementary symbol signifies that the weld shall be

continuous over the whole length of the workpiece.

For fillet welds there are two methods to indicate crosssection dimensions:

Throat thickness (a)The letter ashall always be placed in front of the value of the dimension. See figure 9.

Leg length (z)z a 2=

The letter zshall always be placed in front of the value of the dimension. See figure 9.

Normally throat thickness (a) should be used in Tetra Pak.

Figure 9

In the case of plug or slot weld with bevelled edges, the dimension at the bottom of the holes shall beindicated.

The location of the weld in relation to the edge of the work piece is indicated according to general

recommendations for technical drawings. In the absence of a dimension the weld starts at the edge

of the work piece


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Issued byTetra Pak Packaging Solutions ABS&PMD

Table4:Dimensioningofwelds

No.

Designation

Desiredweld

Definition

Inscrip

tion

1

Buttweld

S:min

imumdistancefromthe

surfaceofthebasematerialto

thebottomofthepenetration.

2

Buttweld

betweenplates

withraised

edges

S:min

imumdistancefromthe

externalsurfaceoftheweldto

thebottomofthepenetration.

3

Continuousfil-

letweld

a:heig

htofthelargestisosceles

trianglethatcanbeinscribedin

thesection.

z:side

ofthelargestisoscelestri-

anglethatcanbeinscribedinthe

section.


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4

Intermittent

filletweld

l:leng

thofweld(withoutend

craters).

(e):distancebetweenadjacent

welde

lements.

n:num

berofweldelements.

a:seeNo.3

z:seeNo.3

n

xl(e)

n

xl(e)

5

Staggered

intermittent

filletweld.

l:

(e)

(seeNo.4)

n:

a:

(seeNo.3)

z:

6

Plugorslot

weld

l:

(e):

(seeNo.4)

n:

c:

widthofslot


No.

Designation

Desiredweld

Definition

Inscrip

tion


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Seamweld.

l:

(e):

(seeNo.4)

n:

c:

widthofslot

8

Plugweld

n:

(seeNo.4)

(e):

spacing

d:

diameterofhole

seeclause

3

9

Spotweld

n:

(seeNo.4)

(e):

spacing

d:

diameterofspot


No.

Designation

Desiredweld

Definition

Inscrip

tion


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4.Examples

Table5:Examplesofuseo

felementarysymbols

No

Designation

symbol(Num-

bersreferto

table1)

Illustration

Representation

Symbolizationinview

Symbolizationinsection

Ononeandthesamed

rawingonlyonewayshallbeused,either

or

1

Buttweld

betweenplates

withraised

edges

1

2

Squaredbutt

weld

2

3 4


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or


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SingleVbutt

weld

3

6


felementarysymbols

No

Designation

symbol(Num-

bersreferto

table1)

Illustration

Representation

Symbolizationinview


Ononeandthesamed



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Single-Vbutt

weldwith

broadrootface

5

12

Single-weld

withbroad

rootface 6

13 14

Single-Ubutt

weld

7


felementarysymbols

No

Designation

symbol(Num-

bersreferto

table1)

Illustration

Representation

Symbolizationinview


Ononeandthesamed



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or


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15

SingleJbutt

weld

8

16 17

Filledweld

10

18


felementarysymbols

No

Designation

symbol(Num-

bersreferto

table1)

Illustration

Representation

Symbolizationinview


Ononeandthesamed



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or


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19

Filletweld

10

20 21


felementarysymbols

No

Designation

symbol(Num-

bersreferto

table1)

Illustration

Representation

Symbolizationinview


Ononeandthesamed



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or


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22

Plugweld

11

23


felementarysymbols

No

Designation

symbol(Num-

bersreferto

table1)

Illustration

Representation

Symbolizationinview


Ononeandthesamed



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or


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24

Spotweld

12

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felementarysymbols

No

Designation

symbol(Num-

bersreferto

table1)

Illustration

Representation

Symbolizationinview


Ononeandthesamed



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Seamweld

13

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felementarysymbols

No

Designation

symbol(Num-

bersreferto

table1)

Illustration

Representation

Symbolizationinview


Ononeandthesamed



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5

Double-Vbutt

weld

3

6

Doublebevel

buttweld

4

7 8

DoubleVbutt

weldwith

broadrootface

5

Table6:Examplesofcombinationsofelementarysymbols

No

Designation

symbol(Num-

bersreferto

table1)

Illustration

Representation

Symbolization

inview

Symbolizationin

section

Ononeandth

esamedrawingonlyonewayshallbeused,eith

er


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9

Doublebevel

weldwith

broadrootface

6

10

DoubleUbutt

weld

7

11

DoubleJbutt

weld

8


No

Designation

symbol(Num-

bersreferto

table1)

Illustration

Representation

Symbolization

inview

Symbolizationin

section

Ononeandth


er


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or


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12

SingleVbutt

weld

3

andsingleU

buttweld 7

13

Filletweld

10

andfilletweld

10

14


No

Designation

symbol(Num-

bersreferto

table1)

Illustration

Representation

Symbolization

inview

Symbolizationin

section

Ononeandth


er


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Table7:Examplesofcombinationofelementaryandsupplemen

tarysymbols

No.

Symbol

Illustration

Representation

Symbolization

inview

Symbolizationin

section

Ononeandth


er

or

1 2 3


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4 5 6

Table7:Examplesofcombinationofelementaryandsupplemen

tarysymbols

No.

Symbol

Illustration

Representation

Symbolization

inview

Symbolizationin

section

Ononeandth


er

Welding Symbol B231013

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