kSIST FprEN 10358:2014

SLOVENSKI STANDARD
oSIST prEN 10358:2012
01-maj-2012
6DQLWDUQDDUPDWXUDL]QHOHJLUDQLKMHNHO6DQLWDUQDDUPDWXUDVVWLVNDOQLPLNRQþQLNL
]DFHYLL]QHOHJLUDQLKMHNHO
Unalloyed steel plumbing fittings - Fittings with press ends for unalloyed steel tubes
Fittings aus unlegierten Stählen - Pressfittings für Rohre aus unlegierten Stählen
Raccords de plomberie en acier non allié - Raccords à sertir pour tubes en acier non allié
Ta slovenski standard je istoveten z: prEN 10358
ICS:
23.040.40 Kovinski fitingi Metal fittings
77.140.75 Jeklene cevi in cevni profili Steel pipes and tubes for
za posebne namene specific use
oSIST prEN 10358:2012 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 10358:2012
oSIST prEN 10358:2012
EUROPEAN STANDARD
DRAFT
prEN 10358
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2012
ICS 23.040.10; 23.040.40
English Version
Unalloyed steel plumbing fittings - Fittings with press ends for
unalloyed steel tubes
Raccords de plomberie en acier non allié - Raccords à Fittings aus unlegierten Stählen - Pressfittings für Rohre
sertir pour tubes en acier non allié aus unlegierten Stählen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ECISS/TC 110.

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, Romania, 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

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 10358:2012: E
worldwide for CEN national Members.

oSIST prEN 10358:2012
prEN 10358:2012 (E)
Contents Page
Foreword .5
1 Scope .5
2 Normative references .5
3 Terms and definitions .6
4 Classification .7
5 Operating temperatures and pressures .7
6 Requirements .8
6.1 General .8
6.2 Materials .8
6.2.1 Metals .8
6.2.2 Elastomers .8
6.3 Design and manufacture . 10
6.3.1 Pressing machine and pressing tools . 10
6.3.2 Tube abutment . 10
6.3.3 Tolerance for the alignment of the fitting ends . 10
6.3.4 Tube specification . 10
7 Evaluation of conformity . 11
7.1 General . 11
7.2 Type testing . 11
7.2.1 Initial Type Testing, ITT . 11
7.2.2 Sampling, testing and conformity criteria . 12
7.3 Factory production control (FPC) . 12
7.3.1 General . 12
7.3.2 General FPC requirements . 12
7.3.3 Personnel . 13
7.3.4 Equipment . 13
7.3.5 Raw materials and connection components . 13
7.3.6 In-process control. 13
7.3.7 Traceability and marking . 13
7.3.8 Non-conforming products . 13
7.3.9 Corrective action. 14
7.3.10 Handling, storage, packaging . 14
8 Test requirements and parameters . 14
8.1 Initial type testing . 14
8.1.1 General . 14
8.1.2 Preparation of fittings for testing . 15
8.1.3 Test temperature . 15
8.1.4 Leak tightness under internal hydrostatic pressure . 15
8.1.5 Leaktightness under internal pneumatic pressure . 15
8.1.6 Resistance to pull-out . 15
8.1.7 Temperature cycling . 17
8.1.8 Working temperature . 18
8.1.9 Pressure cycling . 18
8.1.10 Vacuum . 18
8.1.11 Vibration . 19
8.1.12 Static flexural strength . 19
8.1.13 High temperature test . 20
8.2 Factory production control system . 20
8.2.1 General . 20
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prEN 10358:2012 (E)
8.2.2 Pressure test for fitting bodies with as-cast microstructure or fabricated by welding . 21
8.2.3 Non pressed fitting detection . 21
9 Designation . 21
10 Marking . 22
10.1 General . 22
10.2 Additional marking . 22
11 Documentation . 23
11.1 Declaration of conformity . 23
11.2 User instructions . 23
Annex A (normative) Method for testing leaktightness of joints with tube under internal
hydrostatic pressure . 24
A.1 Scope . 24
A.2 Principle. 24
A.3 Apparatus . 24
A.4 Test assembly . 24
A.5 Procedure . 25
Annex B (normative) Method for testing leaktightness of joints with tube under internal pneumatic
pressure. 26
B.1 Scope . 26
B.2 Principle. 26
B.3 Apparatus . 26
B.4 Test assembly . 26
B.5 Procedure . 27
Annex C (normative) Method for testing resistance to pull-out of joints with tube . 28
C.1 Scope . 28
C.2 Principle. 28
C.3 Apparatus . 28
C.4 Test assembly . 28
C.5 Procedure . 28
Annex D (normative) Test method for resistance of joints with tube intended for water
applications to temperature cycling . 29
D.1 Scope . 29
D.2 Principle. 29
D.3 Apparatus . 29
D.4 Test assembly . 29
D.5 Procedure . 30
Annex E (normative) Test method for resistance of joints with tube intended for gas installations
to temperature cycling . 32
E.1 Scope . 32
E.2 Principle. 32
E.3 Apparatus . 32
E.4 Test assembly . 32
E.5 Test Procedure . 33
E.6 Test report . 35
Annex F (normative) Test method for the resistance of joints with tube to working temperature . 36
F.1 Scope . 36
F.2 Principle. 36
F.3 Apparatus . 36
F.4 Test assembly . 36
F.5 Procedure . 36
Annex G (normative) Method for testing the resistance of joints with tube to pressure cycling . 38
G.1 Scope . 38
G.2 Principle. 38
G.3 Apparatus . 38
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prEN 10358:2012 (E)
G.4 Test assembly . 39
G.5 Procedure . 39
Annex H (normative) Test method for leaktightness of joints with tube under vacuum . 40
H.1 Scope . 40
H.2 Principle . 40
H.3 Apparatus . 40
H.4 Test assembly . 40
H.5 Procedure . 41
Annex I (normative) Test method for the resistance of joints with tube to vibration . 42
I.1 Scope . 42
I.2 Principle . 42
I.3 Apparatus . 42
I.4 Test assembly . 42
I.5 Procedure . 43
Annex J (normative) Test method for the resistance of joints with tube to static flexural strength . 44
J.1 Scope . 44
J.2 Principle . 44
J.3 Apparatus . 44
J.4 Test assembly . 44
J.5 Procedure . 45
Annex K (normative) Test method for the resistance of joints with tube to high temperature . 46
K.1 Scope . 46
K.2 Principle . 46
K.3 Apparatus . 46
K.4 Test assembly . 46
K.5 Procedure . 47
K.6 Requirement . 47
Annex L (normative) Pressure test for fitting bodies with as-cast microstructure or fabricated by
welding . 48
L.1 Scope . 48
L.2 Principle . 48
L.3 Apparatus . 48
L.4 Test assembly . 48
L.5 Procedure . 49
Annex M (normative) Method for testing the non pressed fitting detection of press fittings . 50
M.1 Scope . 50
M.2 Principle . 50
M.3 Apparatus . 50
M.4 Test assembly . 50
M.5 Non pressed fitting detection. . 50

oSIST prEN 10358:2012
prEN 10358:2012 (E)
Foreword
This document (prEN 10358:2012) has been prepared by Technical Committee ECISS/TC 110 “Steel tubes,
and iron and steel fittings”, the secretariat of which is held by UNI.
This document is currently submitted to the CEN Enquiry.
1 Scope
This European Standard specifies materials and test requirements for tube connections with press fittings
made of unalloyed steel.
This European Standard specifies press fittings in the size range 12 mm to 108 mm for the purpose of joining
unalloyed steel tubes intended for use in heating and cooling systems, wet sprinkler systems, oil transporting
and compressed air.
Permissible operating temperatures and maximum operating pressures are also established.
Fittings may comprise a combination of end types, specified in this standard or other standards, providing they
are suitable for the fluid /air being conveyed.
The standard establishes a designation tube system with press end joints made with the components fitting
and tube, pressed with a pressing tool.
This standard is applicable to press fittings for joining unalloyed steel tubes to EN 10305-3, EN ISO 2081,
EN 10346.
Fittings may be suitable for joining other metallic tubes provided the press fitting joint with the specified tube
meets the requirements of this standard.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 437:2003+A1:2009, Test gases — Test pressures — Appliance categories.
EN 549, Rubber materials for seals and diaphragms for gas appliances and gas equipment.
EN 681-1, Elastomeric seals — Material requirements for pipe joint seals used in water and drainage
applications — Part 1: Vulcanized rubber.
EN 10305-3, Steel tubes for precision applications - Technical delivery conditions - Part 3: Welded cold sized
tubes.
EN 10346, Continuously hot-dip coated steel flat products - Technical delivery conditions.
EN ISO 2081, Metallic and other inorganic coatings - Electroplated coatings of zinc with supplementary
treatments on iron or steel.
EN ISO 9001, Quality management systems – Requirements.
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prEN 10358:2012 (E)
ISO 7-1, Pipe threads where pressure-tight joints are made on the threads - Part 1: Dimensions, tolerances
and designation.
ISO 9924-1, Rubber and rubber products — Determination of the composition of vulcanizates and uncured
compounds by thermogravimetry — Part 1: Butadiene, ethylene-propylene copolymer and terpolymer,
isobutene-isoprene, isoprene and styrene-butadiene rubbers.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply:
3.1
adaptor fitting
fitting combining more than one connector type
3.2
factory production control (FPC)
means by which a manufacturer ensures that the performances declared by the manufacturer continue to be
valid for all subsequent products
3.3
initial type test (ITT)
verification of the product's performances described in the technical specification before starting serial
production
3.4
maximum operating pressure
MOP
maximum internal pressure at which pipe work can be operated under regular operating conditions
3.5
nominal diameter
outside diameter of the connecting tube
3.6
permanently marked
marked in such a way that the marking will remain readable up to the end of the life of the installation, e.g. by
stamping, etching or engraving
3.7
PN
reference figure to characterize components of a pipe work system, It comprises the letters "PN" (Pressure
Nominal) followed by an integer which indicates the design pressure in bar at room temperature.
Note 1 to entry: The allowable pressure of a pipe work component depends on the PN number, the material
and design of the component, its allowable temperature, etc.
3.8
press contour
appropriate design of the pressing tool to crimp press fittings
3.9
press fitting
component with at least one sealing element for connecting pipe components by pressing
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prEN 10358:2012 (E)
3.10
pressing machine
motor for the pressing tool
3.11
pressing tool
device to crimp press fittings
3.12
temporarily (removable) marked
marked in such a way that the marking will remain readable at least up to the time of commissioning the
installation, e.g. ink marking

4 Classification
There are two types of press fittings depending on the aggregate state of the medium with which they are
suitable for use, as shown in table 1.
Table 1 — Classification of press fittings
Type aggregate state of medium
1 liquiform / liquid
2 gasiform / gaseous
5 Operating temperatures and pressures
Operating temperatures and pressures for pressed joints shall not exceed the values in tables 2 or 3
according to classification.
Table 2 — Operating temperatures and pressures for type 1 press fitting
Operating temperature Maximum operating pressure (MOP) for nominal
diameters from 12 mm up to and including 108
mm
°C bar
30 16
95 10
NOTE 1 Intermediate pressure ratings shall be determined by linear interpolation.
NOTE 2 Certain designs of press fitting are suitable for use at temperature/pressure
ratings outside those given in this table. For such applications, the advice of the
manufacturer should be sought.

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prEN 10358:2012 (E)
To allow for system malfunctions, fittings shall be capable of temporary excursions up to a temperature of
110 °C at a pressure of 10 bar.
Table 3 — Operating temperatures and pressures for type 2 press fitting
Operating temperature Maximum operating pressure for nominal diameters from
12 mm up to and including 108 mm
°C bar
MOP 5 MOP 1
- 20 to + 70 5 1
6 Requirements
6.1 General
Fittings, including reducers, shall conform to the requirements of 6.2 to 6.3.
6.2 Materials
6.2.1 Metals
Fitting bodies and tubes shall be made from unalloyed steel grades shown in the list below or selected from
materials specified in EN 10305-3.
NOTE Some of the standardized unalloyed steel grades commonly used for the manufacture of fittings are
shown in table 4.
Table 4 — Examples of commonly used materials
Material designation
Standard
Steel Name Steel Number
E195 1.0034 EN 10305-3
E220 1.0215 EN 10305-3
E235 1.0308 EN 10305-3
Other components can be made from metallic or non-metallic materials, provided that they do not prevent the
fitting meeting the functional requirements of this standard and do not cause degradation of the connected
tube, fitting or sealing element.
6.2.2 Elastomers
Sealing elements for type 1 fittings shall conform to the requirements for elastomeric materials in EN 681-
1:2006-11 and table 5 of this standard.
Sealing elements for type 2 fittings shall conform to the requirements for elastomeric materials in
EN 549:1995-04 and table 6 of this standard.
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prEN 10358:2012 (E)
Additional requirement are necessary considering that press fitting design does not allow maintenance and/or
substitution of sealing rings after installation. The original sealing ring shall consequently insure a relevant
lifetime expectance
Table 5 — Sealing elements for type 1 fittings - additional requirements and tests
Test procedures
Tear strength also for butyl rubber in accordance with EN 681-1:2006-11, table 3.
Minimum tear strength: ≥ 20 N
Identity testing of elastomeric materials
For identification testing of elastomers the following procedures will be applied:
- thermogravimetric analysis (TGA)
- determination of extractable components
- infrared spectrum of the extract
The TGA is carried out in accordance with ISO 9924-1.
Frequency of test — All types of identification tests will be applied during initial
type testing and during requalification after 5 years. For yearly test in between the
TGA-test is sufficient. If the yearly TGA shows differences to the ITT results in a
way that lets assume that the formulation of the elastomer has been changed,
then all types of identification test must be applied.
Compression set test in water, in accordance with EN 681-1 appendix B, and
ISO 815
Test duration: 10 000 h
Test temperature: 110 °C
Test medium: Distilled water
Compression set after  3 000 h:
≤ 30 %
Compression set after 10 000 h:
≤ 40 %
Compression set shall be measured after 500, 1 000, 1 500, 2 000, 2 500, 3 000,
4 000, 5 000, 6 000, 8 000, 10 000 h. The significant compression set values for
3 000 h and 10 000 h will be calculated by a regression line. For a graphical
visualisation of the regression line a logarithmical time scale shall be used.
Volume change / swelling (differing to EN 681-1:2006-11 the following
requirement is applicable for IIR only):
Test duration  7 d
Temperature 95 °C
Test medium Distilled water
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prEN 10358:2012 (E)
Volume change ≤15 %
Cold compression set acc. to EN 681-1:2006-11, clause 4.2.5.3
All tests shall be performed with rings of approximately 28 mm x 3 mm

Table 6 — Sealing elements for type 2 fittings - additional requirements and tests
Test procedures
Ozone resistance testing and requirements in accordance with EN 549:1995-04,
7.8 and 6.2, table 3
Requirement — no cracks
Material identity by TGA
Frequency of test – the test shall be carried out at the initial type testing stage to
produce the master graph. Further analysis will be made to compare the
production to the master graph at a frequency of once per year thereafter.

6.3 Design and manufacture
Press fittings and seals shall be designed to meet the expected lifetime of a building or to the first expected
renovation period of the building.
The tightness of the joint, based on actual technical knowledge, is presumed to be capable of maintaining
required performance over a period of at least 50 years under the influence of foreseeable actions and normal
maintenance to fulfil the essential requirements, if the joint itself is in conformity with the requirements of this
standard.
6.3.1 Pressing machine and pressing tools
It is important to use appropriate pressing machine and appropriate pressing tools to ensure that the
connection has been made correctly.
6.3.2 Tube abutment
Fittings are usually manufactured with an abutment to limit tube insertion and to retain a loose supporting
sleeve, if used. Fittings may be produced for special purposes, particularly useful for repairs, where the fittings
do not incorporate abutments, allowing for the fitting to slide along the tube.
6.3.3 Tolerance for the alignment of the fitting ends
The alignment of the ends of the fitting shall be within 2° of the specified axis.
6.3.4 Tube specification
Press fittings produced to this standard are suitable for joining unalloyed steel tubes to EN 10305-3 with wall
thicknesses as specified by the manufacturer.
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prEN 10358:2012 (E)
7 Evaluation of conformity
7.1 General
The conformity of press fittings to the requirements of this standard and with the stated values shall be
demonstrated by:
 initial type testing, ITT, controlled by a certification body;
 factory production control, FPC, by the manufacturer, including product assessment.
For the purposes of testing, press fittings may be grouped into families, where it is considered that the
selected property/properties is/are common to all the fittings within that family.
7.2 Type testing
7.2.1 Initial Type Testing, ITT
7.2.1.1 General
Initial type testing shall be performed to show conformity with this standard.
7.2.1.2 Requirements
All requirements in clause 6 and sub-clause 8.1 shall be subject to initial type testing. The material
characteristics in sub-clauses 6.2.1 do not need testing because:
 reaction to fire — stainless steel is class A.1 according to Commission Decision;
 properties at high temperature – mechanical properties are not reduced significantly at temperatures
concerned.
7.2.1.3 Use of historical data
Tests previously performed on press fittings of the same design and dimensions in accordance with the
provisions of this standard (same characteristic(s), test method, sampling procedure, system of attestation of
conformity, etc.) may be taken into account.
7.2.1.4 Further type testing
Whenever a change occurs in the fitting design, the raw material or supplier of the joint components, or the
production process (subject to the definition of a family), which would change significantly one or more of the
characteristics, the type tests shall be repeated for the appropriate characteristic(s).
7.2.1.5 Transferability of test results, obtained with a specific press contour
Test results, obtained with a specific press contour, can only be transferred from one manufacturer of pressing
tools to another manufacturer with the same nominal press contour under the following conditions:
 identical geometry
 identical material properties
 identical drive
The type testing shall be performed with every allocated construction of joint assembly and pressing tools.
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prEN 10358:2012 (E)
7.2.2 Sampling, testing and conformity criteria
7.2.2.1 Sampling
Initial type testing shall be performed on representative samples of press fittings’ production to be placed on
the market.
7.2.2.2 Testing and conformity criteria
The connection made with press fitting, tube and appropriate pressing tool shall be tested for conformity to the
requirements and characteristics listed in clauses 6 and 8 in accordance with the relevant methods given in
annexes A to M.
The results of all type tests shall be recorded and held by the manufacturer for at least 5 years.
7.3 Factory production control (FPC)
7.3.1 General
The manufacturer shall establish, document and maintain an FPC system to ensure that the products placed
on the market conform to the declared performance characteristics. The FPC system shall consist of written
procedures (works' manual), regular inspections and tests and/or assessments and the use of the results to
control raw and other incoming materials, equipment, the production process and the product.
All the elements, requirements and provisions adopted by the manufacturer shall be documented in a
systematic manner in the form of written policies and procedures. This production control system
documentation shall ensure a common understanding of conformity evaluation and enable the achievement of
the required component characteristics and checking the effective operation of the production control system.
Factory production control therefore brings together operational techniques and all measures allowing
maintenance and control of the conformity of the component with its technical specifications. Its
implementation may be achieved by controls and tests on measuring equipment, raw materials and
constituents, processes, machines and manufacturing equipment and finished components, including material
properties in components, and by making use of the results thus obtained.
7.3.2 General FPC requirements
The FPC system shall fulfil the requirements as described in the following clauses of EN ISO 9001:2008,
where applicable:
 Documentation requirements acc. to clause 4.2 except 4.2.1 a)
 Management commitment acc. to clauses 5.1 e), 5.5.1, 5.5.2
 Resource management acc. to clause 6
 Planning of product realization acc. to clauses 7.1 except 7.1 a), 7.2.3 c), 7.4, 7.5, 7.6
 Monitoring and measurement acc. to clauses 8.2.3, 8.2.4, 8.3, 8.5.2
The FPC system may be part of a quality management system, e.g. in accordance with EN ISO 9001:2008.
The manufacturer shall establish procedures to ensure that the production tolerances allow for the press
fittings’ performances to be in conformity with the declared values derived from initial type testing.
The requirements, and the means of verification, are given in clause 6 and clause 8 and annexes A to M and
the minimum frequency of testing is given by the manufacturer’s quality system.
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prEN 10358:2012 (E)
The manufacturer shall record the results of the tests specified above. These records shall at least include the
following information:
 identification of the press fittings tested;
 the date of testing;
 the test results.
The results of inspections, tests or assessments requiring action shall be recorded, as shall any action taken.
The action to be taken when control values or criteria are not met shall be recorded and retained for the period
specified in the manufacturer’s FPC procedures.
7.3.3 Personnel
The responsibility, authority and the relationship between personnel that manages, performs or verifies work
affecting product conformity, shall be defined. This applies in particular to personnel that need to initiate
actions preventing product non-conformities from occurring, actions in case of non-conformities and to identify
and register product conformity problems.
7.3.4 Equipment
All weighing, measuring and testing equipment necessary to achieve, or produce evidence of, conformity shall
be calibrated or verified and regularly inspected according to documented procedures, frequencies and
criteria. Control of monitoring and measuring devices shall conform to the appropriate clause of
EN ISO 9001:2008.
All equipment used in the manufacturing process shall be regularly inspected and maintained to ensure use,
wear or failure does not cause inconsistency in the manufacturing process.
Inspections and maintenance shall be carried out and recorded in accordance with the manufacturers written
procedures and the records retained for the period defined in the manufacturer's FPC procedures.
7.3.5 Raw materials and connection components
The specifications of all incoming raw materials and components shall be documented, as shall the inspection
scheme for ensuring their conformity. The verification of conformity of the raw material with the specification
shall be in accordance with EN ISO 9001:2008, 7.4.3.
7.3.6 In-process control
The manufacturer shall plan and carry out production under controlled conditions. Compliance with
EN ISO 9001:2008, 7.5.1 and 7.5.2 shall be deemed to satisfy the requirements of this clause.
7.3.7 Traceability and marking
Batches or packages of press fittings shall be identifiable and traceable with regard to their production origin.
The manufacturer shall have written procedures ensuring that processes related to affixing traceability codes
and/or markings (see clause 10) are inspected regularly. Compliance with EN ISO 9001:2008, 7.5.3 shall be
deemed to satisfy the requirements of this clause.
7.3.8 Non-conforming products
The manufacturer shall have written procedures, which specify how non-conforming products shall be dealt
with. Any such events shall be recorded as they occur and these records shall be kept for the period defined
in the manufacturer’s written procedures.
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prEN 10358:2012 (E)
7.3.9 Corrective action
...