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The European Committee for Standardization is one of three European Standardization Organizations (together with CENELEC and ETSI) that have been officially recognized by the European Union and by the European Free Trade Association (EFTA) as being responsible for developing and defining voluntary standards at European level.

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Reference EN 10253-4:2008
Title Butt-welding pipe fittings - Part 4: Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements
Work Item Number EC110072
Abstract/Scope 1.1 This European Standard specifies the technical delivery requirements for seamless and welded butt-welding fittings (elbows, concentric and eccentric reducers, equal and reducing tees, caps) made of austenitic and austenitic-ferritic (duplex) stainless steel which are intended for pressure and corrosion resisting purposes at room temperature, at low temperature or at elevated temperatures. It specifies:  the type of fittings;  type A (see 7.2)  type B (see 7.3)  the steel grades;  the mechanical properties;  the dimensions and tolerances;  the requirements for inspection and testing;  the inspection documents;  the marking;  the handling and packaging. NOTE In the case of a harmonised supporting standard for materials, presumption of conformity to the Essential Requirement(s) (ESRs) is limited to technical data of materials in the standard and does not presume adequacy of the material to a specific item of equipment. Consequently the technical data stated in the material standard should be assessed against the design requirements of this specific item of equipment to verify that the ESRs of the Pressure Equipment Directive (PED) are satisfied. 1.2 Unless otherwise specified in this European Standard the general technical delivery requirements in EN 10021 apply.
Status
Published
Reference Document
date of Availability (DAV) 2008-03-19
ICS 23.040.40 - Metal fittings
77.140.20 - Stainless steels
A-Deviation(s)  
Special National Condition(s)  

Legal

Directive(s) 2014/68/EU, 97/23/EC
Mandate(s) M/071
Citation in OJEU C 293/01 (2016-08-12) for Directive 2014/68/EU, C 46 (2009-02-25) for Directive 97/23/EC

Implementation Dates

date of Ratification (DOR) (1) 2008-01-05
date of Availability (DAV) (2) 2008-03-19
date of Announcement (DOA) (3) 2008-06-30
date of Publication (DOP) (4) 2008-09-30
date of Withdrawal (DOW) (5) 2008-09-30

Relations


(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved


(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat


(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level


(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement


(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn


(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.


In the case of undated standard, a link to the last dated version is provided.


In the case of series, a link to each standard identified in the series is provided.


We also invite you to check (via the website) whether corrigenda and/or amendments shall be read in conjunction with the main standard.

 

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