SIST EN 10312:2003/A1:2005

SLOVENSKI STANDARD
01-september-2005
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Welded stainless steel tubes for the conveyance of water and other aqueous liquids -
Technical delivery conditions
Geschweißte Rohre aus nichtrostenden Stählen für den Transport von Wasser und
anderen wässrigen Flüssigkeiten - Technische Lieferbedingungen
Tubes soudés en acier inoxydable pour le transport d'eau et d'autres liquides aqueux -
Conditions techniques de livraison
Ta slovenski standard je istoveten z: EN 10312:2002/A1:2005
ICS:
23.040.10 Železne in jeklene cevi Iron and steel pipes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 10312:2002/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2005
ICS 23.040.10
English version
Welded stainless steel tubes for the conveyance of water and
other aqueous liquids - Technical delivery conditions
Tubes soudés en acier inoxydable pour le transport d'eau Geschweißte Rohre aus nichtrostenden Stählen für den
et d'autres liquides aqueux - Conditions techniques de Transport von Wasser und anderen wässrigen
livraison Flüssigkeiten - Technische Lieferbedingungen
This amendment A1 modifies the European Standard EN 10312:2002; it was approved by CEN on 25 April 2005.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant 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 amendment 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 10312:2002/A1:2005: E
worldwide for CEN national Members.

Contents
Page
Foreword.3
1 Scope .4
2 Modification to the Title .4
3 Modification to the Foreword .4
4 Modification to the Introduction.4
5 Modification to Clause 1 .4
6 Modification to Clause 2 .5
7 Modification to Clause 3 .5
8 Modification to Clause 6 .5
9 Modification to Subclause 6.1 .5
10 Modification to Subclause 9.3 .5
11 Modification to Subclause 11.4.1 .5
12 Addition of Clause 15 .5
15 Evaluation of conformity.6
13 Modification to Annex ZA .8

Foreword
This document (EN 10312:2002/A1:2005) has been prepared by Technical Committee ECISS/TC 29 “Steel
tubes and fittings for steel tubes”, the secretariat of which is held by UNI.
This Amendment to the European Standard EN 10312:2002 shall be given the status of a national standard,
either by publication of an identical text or by endorsement, at the latest by December 2005, and conflicting
national standards shall be withdrawn at the latest by December 2005.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and United Kingdom
1 Scope
This document amends the wording and content of EN 10312:2002 as scheduled in the following text, to
enable the combined document to be used as the basis for regulatory marking.
2 Modification to the Title
Title – amend to read:
Welded stainless steel tubes for the conveyance of water and other aqueous liquids – Technical delivery
conditions
3 Modification to the Foreword
Foreword - add the following new paragraphs:
Another European Standard covering tubes for the conveyance of aqueous liquids is:
EN 10224, Non-alloy steel tubes and fittings for the conveyance of water and other aqueous liquids –
Technical delivery conditions
Compliance of a product with this document does not confer a presumption of fitness of the product for the
transport of water intended for human consumption within the meaning of the Directive 89/106/EEC. However,
until the operation of the envisaged European Acceptance Scheme for construction products in contact with
water intended for human consumption and the revision of the present document, products complying with this
document may be used for the transport of water intended for human consumption if they comply with the
relevant national, regional or local regulatory provisions applicable in the place of use.
4 Modification to the Introduction
Introduction – amend as follows:
Add as first sentence to the Introduction: "This European Standard applies to welded tubular products in
stainless steels for use with all types of aqueous liquids".
5 Modification to Clause 1
1 – replace the existing text with:
This European Standard specifies the technical delivery conditions for light gauge welded stainless steel tubes,
primarily for water applications, supplied in straight lengths and for use at ambient temperatures. This
document does not cover applications where elevated temperature properties are required. The tube is
suitable for use with compression fittings or press fittings and for adhesive bonding, silver brazing or inert gas
welding of capillary fittings. The document is applicable to tubes in the size range from 6 mm to 267 mm
outside diameter made of stainless (except martensitic and precipitation hardening) steel grades taken from
EN 10088-2.
6 Modification to Clause 2
2 – amend as follows:
Amend the following references:
'prEN 10266' and 'prEN 10168' to read 'EN 10266' and 'EN 10168', move to appropriate position in list and
1)
delete footnote and footnote reference.
7 Modification to Clause 3
3 – amend as follows
Amend 'prEN 10266' to read 'EN 10266'
8 Modification to Clause 6
6 - replace title with the following:
Information to be obtained by the manufacturer
9 Modification to Subclause 6.1
6.1 replace text with the following:
The following information shall be obtained by the manufacturer at the time of enquiry and order.
10 Modification to Subclause 9.3
9.3 – amend as follows
st
1 line, amend 'prEN 10168' to read 'EN 10168'
11 Modification to Subclause 11.4.1
Subclause 11.4.1 - Delete text and add the following:
The manufacturer shall declare the leak tightness applied test method in accordance with either 11.4.2;
11.4.3; or 11.4.4. (See ZA.3) The choice of test method is at the discretion of the manufacturer, unless Option
7 is specified.
12 Addition of Clause 15
New Clause 15 – add the following new clause:
15 Evaluation of conformity
15.1 General
The compliance of tubes with the requirements of this document and with the stated values (including classes)
shall be demonstrated by:
 initial type testing;
 factory production control.
15.2 Initial type testing (ITT)
15.2.1 General
ITT is the complete set of tests or other procedures described in the technical specification, determining the
performance of samples of products representative of the steel tube designs. Initial type testing shall be
performed to show conformity with this document on first use of this document for welded stainless steel tubes
being put onto the market and:
 at the beginning of the production of a new or modified steel tube type or change to the raw material;
 at the beginning of a new or modified method of production.
In the case of type testing on welded stainless steel tubes for which initial type testing in accordance with this
document was already performed, type testing may be reduced:
 if it has been established that the performance characteristics compared with the already tested steel
tubes have not been affected or;
 if historical data is available (see 15.2.4).
The results of all type tests shall be recorded and stored for at least 5 years.
15.2.2 Characteristics
All characteristics in Clause 8, for which the manufacturer is stating a value, shall be subject to ITT by tests
and/or calculation and/or tabulated values in accordance with the relevant subclasses of Clause 8.
15.2.3 Product families
For the purposes of testing (including FPC testing) welded stainless steel tubes may be grouped into families,
where it is considered that the results for a characteristic from any one product is common to all tubes within
that family.
15.2.4 Use of historical data
Tests previously performed on the same steel tube type in accordance with the provisions of this document
(same characteristic(s), test method, sampling procedure, system of attestation of conformity, etc.) may be
taken into account.
15.2.5 ‘Deemed to satisfy’ provisions and use of reference tabulated data
In those cases where conformity with this document is based on ‘deemed to satisfy’ provisions or tabulated
values, type testing shall be limited to the verification of whether the steel tube meets the requirements to use
those values, classes or levels, unless better values, classes or levels are being claimed.
15.2.6 Sampling
ITT shall be performed on samples of welded stainless steel tubes representative of the manufactured types
in accordance with Table 4. The frequency of testing or assessment shall be in accordance with Clause 9.4.
Table 16 Characteristics and compliance criteria for the initial type testing of welded stainless steel
tubes.
Characteristic Requirement Assessment Compliance
Clause Method Criteria
Yield Strength 8.3
...