EUROPEAN STANDARD E N IS O 9 6 9 2 -2

NORME EUROPÉENNE
April 1998
EUROPÄISCHE NORM

ICS 25.160.10 Incorporates corrigendum July 1999

Supersedes EN 29692-2:1994
Descriptors: See ISO document

English version

Welding and allied processes — Joint preparation

Part 2: Submerged arc welding of steels
(ISO 9692-2:1998)

Soudage et techniques connexes — Préparation

de joints — Partie 2: Soudage à l’arc sous flux en
poudre des aciers
(ISO 9692-2:1998)

This European Standard was approved by CEN on 26 January 1998.

CEN members are bound to comply with the CEN/CENELEC 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.
This European Standard exists 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,
Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland,
Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,
Switzerland and United Kingdom.
EN ISO 9692-2:1998

Foreword Contents
The text of the International Standard
Page
ISO 9692-2:1998 has been prepared by Technical
Committee ISO/TC 44 “Welding and allied Foreword ii
processes” in collaboration with Technical Introduction 1
Committee CEN/TC 121 “Welding”, the secretariat 1 Scope 1
of which is held by DS.
2 Normative references 1
This European Standard supersedes
3 Materials 1
EN 29692:1994.
4 T ypesof jointpreparation 1
This European Standard shall be given the status of
a national standard, either by publication of an Table 1 — Joint preparations for butt
identical text or by endorsement, at the latest by welds, welded from one side 2
October 1998, and conflicting national standards Table 2 — Joint preparations for butt
shall be withdrawn at the latest by October 1998. welds, welded from both sides 5
This European Standard has been prepared under a
mandate given to CEN by the European
Commission and the European Free Trade
Association. This European Standard is considered
to be a supporting standard to those application and
product standards which in themselves support an
essential safety requirement of a New Approach
Directive and which make reference to this
European Standard.
According to the CEN/CENELEC Internal
Regulations, the national standards organizations
of the following countries are bound to implement
this European Standard: Austria, Belgium,
Czech Republic, 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
ISO 9692-2:1998 was approved by CEN as a
European Standard without any modification.
 EN ISO 9692-2:1998

INTERNATIONAL ISO
STANDARD 9692-2

First edition
1998-04-01

Welding and allied processes — Joint

preparation —
Part 2:
Submerged arc welding of steels
Soudage et techniques connexes Préparation de joints
— —

Partie 2: Soudage à l'arc sous flux en poudre des aciers

Reference number
ISO 9692-2:1998(E)
EN ISO 9692-2:1998

Foreword
ISO (the International Organization for Standardization) is a worldwide
federation of national standards bodies (ISO member bodies). The work of
preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee.
International organizations, governmental and non-governmental, in liaison with
ISO, also take part in the work. ISO collaborates closely with the International
Electrotechnical Commission (IEC) on all matters of electrotechnical
standardization.
Draft International Standards adopted by the technical committees are circulated
to the member bodies for voting. Publication as an International Standard requires
approval by at least 75 % of the member bodies casting a vote.
International Standard ISO 9692-2 was prepared by Technical Committee
ISO/TC 44, Welding and allied processes, Subcommittee SC 7, Representation and
terms.
ISO 9692 consists of the following parts, under the general title Welding and allied
processes — Joint preparation.
— Part 1: Metal arc welding of steel with covered electrode (currently
ISO 9692:1992);
— Part 2: Submerged arc welding of steels-,
— Part 3: Manual welding of aluminium and its alloys.

Descriptors: Welding, arc welding, submerged arc welding, welded joints, butt joints, specifications,
preparation.

ii
 EN ISO 9692-2:1998

Introduction ISO 3834-3:1994, Qualityrequirements for

welding — Fusion welding of metallic materials —
The intention of this International Standard is to
Part 3: Standards quality requirements.
use it as an addition to ISO 9692:1992 (which is to
become ISO 9692-1, see Foreword) Metal-arc ISO 3834-4:1994, Qualityrequirements for
welding with covered electrode, gas-shielded welding — Fusion welding of metallic materials —
metal-arc welding and gas welding — Joint Part 4: Elementary quality requirements.
preparations for steel. It follows similar rules and ISO 4063:— 1), Welding and allied processes —
the same layout. Therefore, the introduction given Nomenclature of processes and reference numbers.
in ISO 9692 also applies. ISO 6947:1990, Welds — Workingpositions —
Definitions of angles of slope and rotation.
1 Scope ISO 9692:19922), Metal-arc welding with covered
This part of ISO 9692 applies to types of joint electrode, gas-shielded metal arc welding and gas
preparation for submerged arc welding with one welding — Joint preparations for steel.
wire electrode (process 121 according to ISO 4063) ISO 9956-2:1995 and Amd.1 — 3), Specification and
on steel. approval of welding procedures for metallic
This part of ISO 9692 covers only the welding materials — Part 2: Welding procedure specification
positions PA and PB according to ISO 6947. In case for arc welding.
PC is used, special preparation will be necessary.
It applies to fully penetrated welds. For partly 3 Materials
penetrated welds, types of joint preparation, shapes Joint preparations recommended in this part of
and dimensions may differ from the listed proposals ISO 9692 are suitable for all types of weldable steel.
if they are specified in the relevant application
standard or agreed by parties concerned. 4 Types ofjoint preparation
If the root is welded by a different arc welding The recommended types ofjoint preparation and
process (see ISO 4063), the joint preparation dimensions are specified in Table 1 and Table 2.
according to ISO 9692 should be taken into account.
The root gaps referred to in this part of ISO 9692 are
2 Normative references those gaps presented after tack welding, if used.
This part of ISO 9692 gives no dimensions or type of
The following standards contain provisions which,
possibly used backing materials. Root runs may also
through reference in this text, constitute provisions
be used as backing. They may influence the quality
of this International Standard. At the time of
requirements for welding (according to the relevant
publication, the editions indicated were valid. All
part of ISO 3834) and the preparation as given in
standards are subject to revision, and parties to
Table 1 and Table 2. They shall be part of the
agreements based on this International Standard
welding procedure specification according to
are encouraged to investigate the possibility of
ISO 9956-2.
applying the most recent editions of the standards
listed below. Members of IEC and ISO maintain According to the application standard or agreement
registers of currently valid International Standards. between contracting parties, it may be necessary to
grind the slag before welding the next run.
ISO 2553:1992, Welded, brazed and soldered
NOTE The reference numbers have been determined in
joints — Symbolic representation on drawings. accordance with the following scheme:
ISO 3834-1:1994, Quality requirementsfor The first digit corresponds to the number of the table; the second
welding — Fusion welding of metallic materials — digit or numerical group corresponds to the number in ISO 2553;
the third indication, expressed by a letter, takes into account the
Part 1: Guidelines for selection and use. variants of joint preparations.
ISO 3834-2:1994, Quality requirementsfor
welding — Fusion welding of metallic materials —
Part 2: Comprehensive quality requirements.

h To be published. (Revision of ISO 4063:1990)

2) See Foreword.
3) To be published.

a
 Table 1 — Joint preparations for butt welds, welded from one side

EN ISO 9692-2:1998
Dimensions in millimetres
Weld Joint preparation Welding
position

Ref. Workpiece Designation Symbol Illustration Cross section Angle Gap Thickness Depth of (in Remarks
No. thickness (in b of root preparation accordance
accordance Radius face with
with ISO 6947)
ISO 2553) a, ß R

1.2 3 ' t ' 12 Square butt b ' 0,5t PA With backing

weld
ii max. 5

minimal
thickness for
backing:
5 mm or 0,5 t

1.3 10 ' t ' 20 Single-V butt 30° ' a ' 50° 4' b' 8 c' 2 PA With backing
weld
V minimal
thickness for
backing:
5 mm or 0,5 t

1.14 t > 20 Steep-

flanked
single-V butt
weld
u 4° ' ß ' 10° 10 ' b ' 25 PA With backing

minimal
thickness for
backing:
5 mm or 0,5 t

1.3.3 t >12 Single-V butt 60° ' a ' 70° 1' b' 4 0' c' 3 4' h' 6 PA Root run
weld with V 4° ' ß ' 10° welded with
root optional
welding
process
 Table 1 — Joint preparations for butt welds, welded from one side
Dimensions in millimetres
Weld Joint preparation Welding
position

Ref. Workpiece Designation Symbol Illustration Cross section Angle Gap Thickness Depth of (in Remarks
No. thickness (in b of root preparation accordance
accordance Radius face with
with ISO 6947)
ISO 2553) a, ß R

1.3.7 t b 12 Single-Ubutt 60° ' a =; 70° 1' b' 4 0' c' 3 4' h' 6 PA Root run
weld with V 4° ' ß 5 10° 5 ' S ' 10 welded with
root optional
welding
process

1.7 t B 30 Single-Ubutt
weld
v 4° ' ß ' 10° 1' b' 4
5 ' S ' 10
2' c' 3 PA With backing

minimal
thickness for
backing:
5 mm or 0,5 t

1.4 3 ' t ' 16 Single-bevel 30° ' ß ' 50° 1' b' 4 c' 2 PA With backing
butt welded
i/ PB
minimal
thickness for
backing:
5 mm or 0,5 t

EN ISO 9692-2:1998
3
 Table 1 — Joint preparations for butt welds, welded from one side

EN ISO 9692-2:1998
Dimensions in milimeters
Weld Joint preparation Welding
position

Ref. Workpiece Designation Symbol Illustration Cross section Angle Gap Thickness Depth of (in Remarks
No. thickness (in b of root preparation accordance
accordance Radius face with
with ISO 6947)
ISO 2553) a, ß R

1.15 t B 16 Steep- 8° ' ß ' 10o 5 ' b ' 15 PA With backing

Hanked
single-bevel
i/ PB

butt weld minimal

thickness for
backing:
5 mm or 0,5 t

1.8 t B 16 Single-J butt 4° ' ß ' 10° 2 ' b' 4 2' c' 3 PA With backing
weld 5 ' R ' 10 PB

minimal
thickness for
backing:
5 mm or 0,5 t
 Table 2 — Joint preparations for butt welds, welded from both sides
Dimensions in millimetres
Weld Joint preparation Welding
position

Ref. Workpiece Designation Symbol Illustration Cross section Angle Gap Thickness Depth of (in Remarks
No. thickness (in b of root preparation accordance
accordance Radius face with
with ISO 6947)
ISO 2553) a, ß R

2.2 3 ' t ' 20 Square butt b' 2 PA Width of gap

weld shall be kept
within small
tolerances

2.5.9 10 ' t ' 35 Single-Y butt 30° ' a ' 60° b' 4 4 ' c ' 10 PA Root run
weld with may be
broad root
face and
backing run
£ welded by
another
fusion
welding
process.

2.5.2 10 ' t ' 20 Single-V butt 60° ' a ' 80° b' 4 5 ' c ' 15 PA Root run
weld with may be
square butt welded by
weld ï another
fusion
welding
process.

2.5.5 t b 16 Double-V 30° ' a ' 70° b' 4 4 ' c ' 10 hi « ho PA

i
butt weld
with broad
root face

EN ISO 9692-2:1998
5
 Table 2 — Joint preparations for butt welds, welded from both sides

EN ISO 9692-2:1998
Dimensions in millimetres
Weld Joint preparation Welding
position

Ref. Workpiece Designation Symbol Illustration Cross section Angle Gap Thickness Depth of (in Remarks
No. thickness (in b of root preparation accordance
accordance Radius face with
with ISO 6947)
ISO 2553) a, ß R

2.7.9 t B 30 Single-U butt 5° ' ß ' 10° b' 4 4 ' c ' 10 PA

weld with 5 ' R ' 10
backing run

2.7.7 t B 50 Double-U
butt weld

x 5° ' ß ' 10° b' 4

5 ' R ' 10
4 ' c ' 10 h = 0,5 (t - c) PA This type of
joint
preparation
can also be
produced
asymmetrically
in a similar
manner to the
asymmetrical
double-V butt
weld.
2.6.6 t b 12 Double-bevel 30° ' ß ' 50° b' 4 4 ' c ' 10 PA This type of
butt weld PB joint
with broad
root face t: preparation
can also be
produced
asymmetrically
in a similar
manner to the
asymmetrical
double-V butt
weld.
Root run may
be necessary.
 Table 2 — Joint preparations for butt welds, welded from both sides
Dimensions in millimetres
Weld Joint preparation Welding
position

Ref. Workpiece Designation Symbol Illustration Cross section Angle Gap Thickness Depth of (in Remarks
No. thickness (in b of root preparation accordance
accordance Radius face with
with ISO 6947)
ISO 2553) a, ß R
2.8.9 t B 20 Single-J butt 5° ' ß ' 10° b' 4 10 PA Root run may
weld with 5 ' R ' 10 PB be necessary.
backing run
£

2.4.9 t <12 Single bevel 30° ' ß ' 50° PA Root run may
butt weld PB be necessary.
with backing
£

2.8.8 t B 30 Double-J butt 5° ' ß ' 10° b' 4 PA This type of

A weld 5 ' R ' 10 PB joint

K preparation
can also be
produced
asymmetrically

EN ISO 9692-2:1998
in a similar
manner to the
asymmetrical
double-V butt
weld.
Root run may
be necessary.
L
 Table 2 — Joint preparations for butt welds, welded from both sides

EN ISO 9692-2:1998
Dimensions in millimetres
Weld Joint preparation Welding
position

Ref. Workpiece Designation Symbol Illustration Cross section Angle Gap Thickness Depth of (in Remarks
No. thickness (in b of root preparation accordance
accordance Radius face with
with ISO 6947)
t ISO 2553) a, ß R c h

K
2.8.8 t ' 12 Double-J butt b' 2 2' c' 3 PA Joint
B weld for 5 ' R ' 10 PB preparation
single pass for single
welding pass welding
process process

2.8.8 t >12 Double-J butt PA Joint

C weld for PB preparation
multipass for multi-pass
welding welding
process process
Root run may
be necessary.