prEN 10344
(Main)Malleable cast iron fittings with compression ends for steel pipes
Malleable cast iron fittings with compression ends for steel pipes
This standard specifies the requirements for the design, performance and testing of fittings made of malleable cast iron (see also clause 5 Materials) with compression ends for steel pipes. It applies to steel piping systems for different application fields, such as gas supply, distribution of water for general purposes and for human consumption, irrigation, fire fighting, aqueous liquids, compressed air and gaseous fuel systems.
It also applies to oil piping systems, provided the elastomeric sealing material is compatible with the oil and the operating conditions.
It contains requirements and tests relating to compression fittings which can be disconnected from smooth walled steel pipes or other cylindrical metal structural elements, which are applicable for dismantleable joints. The fittings can also incorporate other types of connection, such as threaded, flanged, compression ends for connection of polyethylene pipes, etc., and can also take on various structural shapes, such as, straight piece, elbow or T-piece, etc. Their range of sizes covers nominal sizes DN 6 to DN 100 (size 1/8 to 4).
Tempergussfittings mit Klemmanschlüssen für Stahlrohre
Diese Norm legt die Anforderungen an die Konstruktion, Anwendungsmerkmale und Prüfung von Tempergussfittings mit Klemmanschlüssen für Stahlrohre fest. Sie gilt für Rohrleitungssysteme aus Stahl für unterschiedliche Anwendungsbereiche, z. B. Gasversorgung, Wasserverteilung für allgemeine Zwecke sowie für Trinkwasser, Bewässerung, Löschwassersysteme, wässrige Lösungen, Druckluft und gasförmige Brennstoffe.
Diese Norm gilt ebenfalls für Rohrleitungen für Öl, sofern die Elastomer-Abdichtungen mit dem Öl und den Betriebsbedingungen kompatibel sind.
Die Norm enthält Anforderungen und Prüfungen für Klemmanschlüsse, die von glattwandigen Stahlrohren oder anderen zylindrischen Bauteilen aus Metall (im folgenden kurz „glatte Rohrverbindungen“ genannt)
demontiert werden können. Die Fittings können auch andere Verbindungsarten umfassen, z. B. Gewinde-, Flansch- und Klemmverbindungen für Rohre aus Polyethylen usw. und in unterschiedlichen Formen ausgeführt sein, z. B. als gerade Anschlüsse, Bogen oder T-Stücke, usw. Der Nennweitenbereich umfasst die Nennweiten DN 6 bis DN 100 (Größe ⅛ bis 4).
Raccords à compression en fonte malléable pour tubes d'acier
La présente norme spécifie les exigences de conception, de performances et d’essai des raccords à compression en fonte malléable pour tubes en acier. Elle s’applique aux réseaux de canalisations en acier utilisés dans des différents champs d’application, tels que l’alimentation en gaz, la distribution d’eau destinée à des usages généraux et à la consommation humaine, l’irrigation, la lutte contre l’incendie, les liquides aqueux, les systèmes à air comprimé et à combustibles gazeux.
La présente norme s’applique également aux réseaux de canalisations d'hydrocarbures, à la condition que le produit d’étanchéité élastomère soit compatible avec l’huile et les conditions de fonctionnement.
Elle spécifie des exigences et des essais relatifs aux raccords à compression pouvant être démontés à partir de tubes lisses en acier ou d’autres éléments structurels cylindriques en métal, utilisables pour les joints démontables. Les raccords peuvent également comporter d’autres types de connexions, telles que les extrémités de compression filetées ou à bride, utilisées pour des tubes en polyéthylène, entre autres. Ils peuvent aussi se présenter sous différentes formes : raccords droits, coudes ou tés. Leur gamme de dimensions comprend les dimensions nominales DN 6 à DN 100 (dimension 1/8 à 4).
Fitingi iz temprane železove litine s prižemnimi priključki za železne cevi
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2022
Fitingi iz temprane železove litine s prižemnimi priključki za železne cevi
Malleable cast iron fittings with compression ends for steel pipes
Tempergussfittings mit Klemmanschlüssen für Stahlrohre
Raccords à compression en fonte malléable pour tubes en acier
Ta slovenski standard je istoveten z: prEN 10344
ICS:
23.040.40 Kovinski fitingi Metal fittings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2022
ICS 23.040.40
English Version
Malleable cast iron fittings with compression ends for steel
pipes
Raccords à compression en fonte malléable pour tubes Tempergussfittings mit Klemmanschlüssen für
en acier Stahlrohre
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 459/SC 10.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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-CENELEC
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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10344:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Types of fittings . 9
5 Materials . 9
5.1 General . 9
5.2 Material of the fitting body . 9
5.2.1 Malleable cast iron . 9
5.3 Elastomers . 9
6 Corrosion protection.10
6.1 General .10
6.2 Hot dip galvanizing .10
6.2.1 General .10
6.2.2 Chemical composition of the hot dip zinc coating .10
6.2.3 Coating mass per surface unit and layer thickness.10
6.2.4 Surface conditions of the hot dip zinc coating .11
6.3 Non-metallic coating .11
6.4 Dangerous substances .11
6.4.1 General .11
6.4.2 Hot dip zinc coating .11
6.4.3 Despatch conditions of finished fittings .11
6.4.4 Non-metallic coating .11
7 Design .11
7.1 General .11
7.2 Geometrical characteristics .12
7.3 Minimum bore .12
7.4 Pipe threads .12
7.5 Surfaces .12
7.6 Transition fittings .13
7.6.1 Transition with jointing thread .13
7.6.2 Transition for polyethylene pipe .13
7.6.3 Transition for other pipes .13
7.7 Load transmission .13
8 Performance requirements .13
8.1 Yield strength .13
8.2 Tightness .13
8.2.1 Internal pressure strength .13
8.2.2 Leak tightness .13
8.3 Pressure and temperature limits .14
8.4 Dimensional tolerances .14
8.5 Reaction to fire .14
8.6 Durability .14
8.6.1 Durability of fittings .14
8.6.2 Durability of elastomeric seals .14
8.7 Dangerous substances .15
9 Test requirements . 15
9.1 General . 15
9.2 Component test . 16
9.2.1 Testing of malleable cast iron . 16
9.2.2 Testing of plastic components . 16
9.2.3 Testing of sealing materials . 17
9.2.4 Testing of hot dip zinc coating . 17
9.2.5 Analysis of polycyclic aromatic hydrocarbons . 17
9.2.6 Testing of non-metallic coating . 17
9.2.7 Material tests . 17
9.2.8 Visual inspection . 18
9.2.9 Geometrical characteristics . 18
9.2.10 Leak tightness of fitting body . 18
9.3 Assembly tests . 19
9.3.1 General . 19
9.3.2 Leak tightness under internal pressure . 19
9.3.3 Leak tightness under pressure cycling . 19
9.3.4 Leak tightness after repeated movements . 19
9.3.5 Resistance to pull-out. 21
9.3.6 Resistance to vibrations . 21
9.3.7 Leak tightness after temperature changes . 22
9.3.8 Behaviour in case of negative pressure (vacuum) . 22
9.3.9 Leak tightness under high temperature for fuel gas application . 23
9.3.10 Surface protection – Testing by salt spray test . 23
10 Assessment of conformity . 23
11 Designation of fittings . 23
11.1 Elements of the designation for ordering . 23
11.2 Additional notes on designation of size . 24
11.3 Examples of designation . 24
12 Marking . 24
Annex A (normative) Surface protection - Salt spray test . 25
A.1 Requirements . 25
A.2 Testing . 25
European foreword
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