prEN 10242
(Main)Threaded pipe fittings in malleable cast iron
Threaded pipe fittings in malleable cast iron
This document specifies the requirements for the design and performance of threaded pipe fittings in malleable cast iron with black or hot dip galvanized surface.
These fittings are for general purposes for the transmission of fluids and gases up to the limits of operating pressure and operating temperature specified in this document. They are intended for the connection of elements threaded with sizes ⅛ to 6 (DN 6 to DN 150).
Fittings with alternative permanent coatings or permanent coatings on top of hot dip galvanizing do not fall under the scope of this document.
NOTE One main use is for the connection of non-alloy steel tubes according to EN 10255 and with support of the thread joint by using sealing materials according to the EN 751 series.
Gewindefittings aus Temperguss
Dieses Dokument legt die Anforderungen an die Konstruktion und Gebrauchseigenschaften von Gewindefittings in Temperguss mit unverzinkten oder schmelztauchverzinkten Oberflächen fest.
Diese Fittings dienen allgemein der Übertragung von Fluiden und Gasen bis zu den in diesem Dokument festgelegten Betriebsdruck- und Betriebstemperaturgrenzen. Sie sind bestimmt für die Verbindung von Teilen mit Gewinden in den Größen 1/8 bis 6 (DN 6 bis DN 150).
Fittings mit alternativen dauerhaften Beschichtungen oder dauerhaften Beschichtungen über der Schmelztauchverzinkung fallen nicht in den Anwendungsbereich dieses Dokumentes.
ANMERKUNG Eine wesentliche Anwendung ist die Verbindung unlegierter Stahlrohre nach EN 10255 und mit Unterstützung des Gewindeanschlusses durch Verwendung von Dichtungswerkstoffen nach EN 751 (alle Teile).
Raccords de tuyauterie filetés en fonte malléable
Le présent document spécifie les exigences de conception et de performance des raccords de tuyauterie filetés en fonte malléable avec une surface noire ou galvanisée à chaud.
Ces raccords, d'usage général, servent au transport de fluides et de gaz dans les limites de pression de service et de température de service spécifiées dans le présent document. Ils sont prévus pour le raccordement d'éléments filetés de diamètre ⅛ à 6 (DN 6 à DN 150).
Les raccords présentant des revêtements permanents alternatifs ou des revêtements permanents appliqués sur la galvanisation à chaud ne relèvent pas du domaine d'application du présent document.
NOTE Une des principales utilisations est le raccordement de tubes en acier non allié conformes à l'EN 10255 et le maintien de la jonction filetée à l’aide de matériaux d'étanchéité conformes à l'EN 751 (toutes les parties).
Fitingi z navojem iz temprane litine
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2022
Fitingi z navojem iz temprane litine
Threaded pipe fitting in malleable cast iron
Gewindefittings aus Temperguss
Raccords de tuyauterie filetés en fonte malléable
Ta slovenski standard je istoveten z: prEN 10242
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 Will supersede EN 10242:1994
English Version
Threaded pipe fitting in malleable cast iron
Raccords de tuyauterie filetés en fonte malléable Gewindefittings aus Temperguss
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 10242:2022 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 . 8
5 Materials .10
5.1 General .10
5.2 Material of the fitting .10
5.2.1 Malleable cast iron .10
5.2.2 Other ferrous materials .10
6 Corrosion protection.11
6.1 General .11
6.2 Hot dip galvanizing .11
6.2.1 General .11
6.2.2 Chemical composition of the hot dip zinc coating .11
6.2.3 Coating mass per surface unit and layer thickness.11
6.2.4 Surface condition of the hot dip zinc coating .12
6.3 Dangerous substances .12
6.3.1 General .12
6.3.2 Hot dip zinc coating .12
6.3.3 Despatch conditions of finished fittings .12
7 Design .12
7.1 General .12
7.2 Design symbol .12
8 Dimensions and tolerances .13
8.1 Relationship between fitting size and nominal size (DN) .13
8.2 Tolerance of the dimensions .13
8.3 Lengths of engagement .14
8.4 Widths across flats .14
8.4.1 General .14
8.4.2 Design of flats .14
8.4.3 Minimum depth of spanner flats .15
8.5 Reaction to fire .15
9 Threads .15
9.1 Choice of thread .15
9.1.1 Jointing thread .15
9.1.2 Fastening threads .15
9.2 Alignment of threads .15
9.3 Chamfering .15
10 Manufacture .15
11 Required characteristics .16
11.1 Permissible working pressure and temperature .16
11.2 Design strength .16
11.3 Assembly .17
12 Testing and inspection. 17
12.1 Malleable cast iron . 17
12.2 Hot dip zinc coating. 17
12.3 Threads . 17
12.3.1 Jointing threads . 17
12.3.2 Fastening threads . 17
12.3.3 Alignment . 17
12.4 Leak tightness test . 18
12.5 Final visual inspection . 18
12.6 Acceptance tests for higher performances . 18
12.6.1 General . 18
12.6.2 Hydrostatic pressure tests . 18
12.7 Analysis of polycyclic aromatic hydrocarbons . 18
12.8 Inspection documents . 18
13 Designation of fittings . 18
13.1 Elements of the designation for ordering . 18
13.2 Additional notes on designation of size . 19
13.3 Example of designation . 20
14 Marking . 20
15 Tables with dimensions . 21
Bibliography . 47
European foreword
This document (prEN 10242:2022) has been prepared by Technical Committee CEN/TC 459 “ECISS -
European Committee for Iron and Steel Standardization” , the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 10242:1994.
Through its sub-committee CEN/TC 459/SC 10 “Steel tubes, and iron and steel fittings” (secretariat: UNI).
1 Scope
This document specifies the requirements for the design and performance of threaded pipe fittings in
malleable cast iron with black or hot dip galvanized surface.
These fittings are for general purposes for the transmission of fluids and gases up to the limits of pressure
and temperature specified in this document. They are intended for the connection of elements threaded
in accordance with EN 10226-1, sizes ⅛ to 6.
Fittings with alternative permanent coatings or permanent coatings on top of hot dip galvanizing do not
fall under the scope of this document.
NOTE One main use is for the connection of non-alloy steel tubes according to EN 10255 and with support of
the thread joint by using sealing materials according to EN 751 (all parts).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1562, Founding - Malleable cast irons
EN 10204, Metallic products - Types of inspection documents
EN 10216-1, Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 1: Non-alloy
steel tubes with specified room temperature properties
EN 10216-2, Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 2: Non-alloy
and alloy steel tubes with specified ele
...
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