EN 1708-1:2010

Welding - Basic welded joint details in steel - Part 1: Pressurized components

The purpose of this European Standard is to exemplify commonly accepted welded connections in pressure systems. It does not promote the standardization of connections that may be regarded as mandatory or restrict development in any way. Stress analysis rules should be considered if necessary.
This standard contains examples of connections welded by:
-   Manual metal-arc welding with covered electrode (111);
-   Submerged arc welding (12);
-   Gas shielded metal arc welding (13);
-   Tungsten inert gas arc welding; TIG-welding (14);
-   Plasma arc welding (15)
processes (process numbers according to EN ISO 4063) in steel pressure systems. Other processes by agreement.
This standard covers welded joint details in steel, but can be applied to other metallic materials. In such cases the shape and dimensions of the weld should be checked.
The estimation of the suitability of welded connections for special service conditions, for example corrosion and fatigue are not specially considered.

Schweißen - Verbindungselemente beim Schweißen von Stahl - Teil 1: Druckbeanspruchte Bauteile

Diese Norm enthält beispielhaft allgemein übliche Schweißverbindungen an druckbeanspruchten Bauteilen.
Sie ersetzt nicht die Normung von vorgeschriebenen Verbindungen oder schränkt die Entwicklung in
irgendeiner Weise ein. Falls erforderlich, sind die Regeln der Spannungsberechnung zu beachten.
Die Norm enthält Beispiele von Schweißverbindungen, die nach folgenden Prozessen geschweißt werden:
- Lichtbogenhandschweißen mit umhüllter Stabelektrode (111);
- Unterpulverschweißen (12);
- Metallschutzgasschweißen (13);
- Wolfram-Inertgasschweißen; WIG-Schweißen (14);
- Plasmaschweißen (15).
Prozesse (Prozessnummern nach EN ISO 4063) an Stahl für Drucksysteme. Andere Verfahren nach
Vereinbarung.
Die Norm deckt Verbindungselemente beim Schweißen von Stahl ab, kann aber auch auf andere metallische
Werkstoffe angewandt werden. In diesen Fällen sollten die Form und das Abmaß der Schweißverbindung
geprüft werden.
Die Eignung dieser Schweißverbindungen für besondere Betriebsbedingungen, z. B. Korrosion und
Ermüdung, wird nicht besonders berücksichtigt.

Soudage - Descriptif de base des assemblages soudés en acier - Partie 1: Composants soumis à la pression

L’objet de la présente Norme européenne est de présenter les assemblages soudés communément acceptés
dans les récipients à pression. Elle ne promeut aucunement la normalisation d’assemblages qui puissent être
considérés comme obligatoires, pas plus qu’elle ne restreint en aucune façon le développement. Il convient, si
nécessaire, de prendre les règles d’analyse des contraintes en considération.
La présente norme contient des exemples de soudures effectuées par :
- soudage manuel à l’arc avec électrode enrobée (111) ;
- soudage à l’arc sous flux en poudre (12) ;
- soudage à l’arc sous protection de gaz avec fil électrode fusible (13) ;
- soudage à l’arc en atmosphère inerte avec électrode de tungstène, procédé TIG (14) ;
- soudage plasma (15)
(références de procédé conformes à l’EN ISO 4063) dans les récipients à pression en acier. Les principes de
cette norme peuvent s’appliquer à d’autres procédés sur accord.
La présente norme couvre les détails des joints soudés pour l’acier, mais peut être appliquée à d’autres
matériaux métalliques. Dans de tels cas, il convient que soient vérifiées les formes et dimensions de la
soudure.
L’estimation de l’adaptation des assemblages soudés à des conditions d’utilisation particulières, comme la
corrosion et la fatigue n’est pas particulièrement examinée.

Varjenje - Opisi zvarnih spojev na jeklu - 1. del: Tlačne komponente

Namen tega evropskega standarda je ponazoriti splošno sprejete zvarne povezave v tlačnih sistemih. Ne spodbuja standardizacije povezav, ki bi se lahko štela kot obvezna ali ki bi kakor koli omejevala razvoj.  Po potrebi je treba upoštevati pravila napetostne analize. Ta standard vsebuje primere povezav, zvarjenih na naslednje načine: - z ročnim elektroobločnim varjenjem z oplaščeno elektrodo (111); - z obločnim varjenjem pod praškom (12); - z elektroobločnim varjenjem v zaščitnem plinu (13); - z obločnim varjenjem z netaljivo volframovo elektrodo pod zaščito obloka z inertnimi plini; TIG-varjenje (14); - s plazemskim obločnim varjenjem (15) (številke postopkov v skladu z EN ISO 4063) v jeklenih tlačnih sistemih. Drugi postopki po dogovoru. Ta standard zajema zvarne spoje na jeklu, vendar se lahko uporabi tudi za druge materiale. V takšnih primerih je treba preveriti obliko in mere zvara. Ocena ustreznosti zvarnih povezav pri posebnih delovnih pogojih, na primer koroziji in utrujenosti materiala, ni posebej obravnavana.

General Information

• Status: Published
• Publication Date: 12-Jan-2010
• ICS: 25.160.40 - Welded joints and welds
• Technical Committee: CEN/TC 121 - Welding
• Drafting Committee: CEN/TC 121/SC 4 - Quality management in the field of welding
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Completion Date: 27-Apr-2020
• Ref Project: SIST EN 1708-1:2010 - Welding - Basic welded joint details in steel - Part 1: Pressurized components

Relations

• Replaces: EN 1708-1:1999 - Welding - Basic weld joint details in steel - Part 1: Pressurized components
• Effective Date: 08-Jun-2022
• Replaces: EN 1708-1:1999/A1:2003 - Welding - Basic weld joint details in steel - Part 1: Pressurized components
• Effective Date: 16-Jan-2010

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.QWHSchweißen - Verbindungselemente beim Schweißen von Stahl - Teil 1: Druckbeanspruchte BauteileSoudage - Descriptif de base des assemblages soudés en acier - Partie 1: Composants soumis à la pressionWelding - Basic welded joint details in steel - Part 1: Pressurized components25.160.40Varjeni spoji in variWelded jointsICS:Ta slovenski standard je istoveten z:EN 1708-1:2010SIST EN 1708-1:2010en,fr,de01-april-2010SIST EN 1708-1:2010SLOVENSKI
STANDARDSIST EN 1708-1:1999/A1:2004SIST EN 1708-1:19991DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1708-1
January 2010 ICS 25.160.40 Supersedes EN 1708-1:1999English Version
Welding - Basic welded joint details in steel -Part 1: Pressurized components
Soudage - Descriptif de base des assemblages soudés en acier - Partie 1: Composants soumis à la pression
Schweißen - Verbindungselemente beim Schweißen von Stahl - Teil 1: Druckbeanspruchte Bauteile This European Standard was approved by CEN on 28 November 2009.
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 CEN Management Centre 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 CEN Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1708-1:2010: ESIST EN 1708-1:2010

 Manual metal-arc welding with covered electrode (111);  Submerged arc welding (12);  Gas shielded metal arc welding (13);  Tungsten inert gas arc welding; TIG-welding (14);  Plasma arc welding (15) processes (process numbers according to EN ISO 4063) in steel pressure systems. Other processes by agreement. This standard covers welded joint details in steel, but can be applied to other metallic materials. In such cases the shape and dimensions of the weld should be checked. The estimation of the suitability of welded connections for special service conditions, for example corrosion and fatigue are not specially considered. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 4063, Welding and allied processes — Nomenclature of processes and reference numbers (ISO 4063:2009) EN ISO 5817, Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) — Quality levels for imperfections (ISO 5817:2003, corrected version:2005, including Technical Corrigendum 1:2006) EN ISO 9692-1:2003, Welding and allied processes — Recommendations for joint preparation — Part 1: Manual metal-arc welding, gas-shielded metal-arc welding, gas welding, TIG welding and beam welding of steels (ISO 9692-1:2003) EN ISO 9692-2:1998, Welding and allied processes — Joint preparation — Part 2: Submerged arc welding of steels (ISO 9692-2:1998) 3 Requirements 3.1 Selection of detail Connections are not considered to be equally suitable for all service conditions, nor is the order in which they are shown indicative of their relative characteristics. In selecting the appropriate detail to use from the several SIST EN 1708-1:2010

Figure 1 — Transversal section Figure 2 — Longitudinal section The drawings of the nozzle and branch connections (see Tables 2 and 3) show a transversal section of the connection (see Figure 1) and a longitudinal section of the connection (see Figure 2). 3.4 Removal of internal sharp edges in branch bores It will be noted that the internal edges on the bores of branches are shown partially radiused (for example see Table 2, no. 2.1.6) because a stress concentration occurs at this point. The rounding of the edges is recommended when the branch connection is subjected to severe service conditions like fatigue, creep and stress corrosion. SIST EN 1708-1:2010

Key
h1, h2 depth of the grooves Figure 3 — Preparation of holes in the shell  The roots of the joint preparations may be in one plane, as for example when they are machine drilled, in which case the depths of the grooves will vary around the hole as shown in Figure 4.
Figure 4 — Preparation of holes in the shell 3.6 Welds for smooth transition In some cases it is convenient to foresee a fillet weld providing smooth geometric transition from the surface of one welded part to the surface of the other one, e.g. from branch to shell. Its purpose is to soften the notch effect in the branch-shell edge and therefore the throat thickness is not presented on the figure concerned. 3.7 Oblique and tangential branches The welded connections are contained in Tables 1 to 13. Regarding branches, the oblique and tangential ones are not specially considered as their preparation is similar to that reported on Tables 2 and 3 for radial branches. Only some significant cases are therefore considered (see Table 2, no. 2.2). NOTE 1 The welds are only blackened in the following tables when the figures do not give information about the dimension of the values for the preparation. NOTE 2 It is not intended that the values of the dimension given in the tables should be measured precisely but rather the general philosophy should be applied.
α ≤ 30° t1 < t2 In case of severe service conditions, the design shall be in accordance with Figures 1.1.2 and 1.1.3. e ≤ 0,1 t1 max. 2 mm (for one side welding) 1.5 and 2.3 1.1.2
α ≤ 30° t1 < t2
1.5, 2.3 and 2.5.2 1.1.3
α ≤ 30° t1 < t2 for ultrasonic test h > 3 t1, but min. 20 mm for radiographic test h ≥ t1 1.5, 2.3 and 2.5.2 1.1.4
α ≤ 30°
see 1.1.1 2.5.1
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