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1、BRITISH STANDARD BS EN 10253-4:2008 Butt-welding pipe fittings Part 4: Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements ICS 23.040.40; 77.140.20 ? Licensed copy: The University of Hong Kong, The University of Hong Kong, Version correct as of
2、07/12/2008 07:50, (c) BSI BS EN 10253-4:2008 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2008 BSI 2008 ISBN 978 0 580 53411 9 National foreword This British Standard is the UK implementation of EN 10253-4:2008. It partially super
3、sedes BS 1640-2:1962 and BS 1640-4:1968, which will be withdrawn upon publication of BS EN 10253-3. The UK participation in its preparation was entrusted to Technical Committee ISE/19, Pipe fittings (other than cast iron). A list of organizations represented on this committee can be obtained on requ
4、est to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication DateComme
5、nts Licensed copy: The University of Hong Kong, The University of Hong Kong, Version correct as of 07/12/2008 07:50, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10253-4 March 2008 ICS 23.040.40; 77.140.20 English Version Butt-welding pipe fittings - Part 4: Wrought austenitic and au
6、stenitic-ferritic (duplex) stainless steels with specific inspection requirements Raccords souder bout bout - Partie 4: Aciers inoxydables austnitiques et austno-ferritiques avec contrle spcifique Formstcke zum Einschweien - Teil 4: Austenitische und austenitisch-ferritische (Duplex-)Sthle mit beson
7、deren Prfanforderungen This European Standard was approved by CEN on 5 January 2008. 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. Up-to-date lists a
8、nd bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the respons
9、ibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Icel
10、and, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de
11、 Stassart, 36 B-1050 Brussels 2008 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10253-4:2008: E Licensed copy: The University of Hong Kong, The University of Hong Kong, Version correct as of 07/12/2008 07:50, (c) BSI EN 10253-4:2
12、008 (E) 2 Contents Foreword3 Introduction.4 1Scope 5 2Normative references5 3Terms and definitions .7 4Symbols8 5Classification of grades and designation .9 6Information to be supplied by the purchaser .9 7Resistance to internal pressure.12 8Manufacturing process .12 9Technical requirements 14 10App
13、earance and internal soundness.22 11Dimensions and tolerances23 12Inspection.31 13Sampling.33 14Test methods35 15Marking.38 16Handling and packaging .38 Annex A (normative) Structural dimensions of fittings.39 Annex B (normative) Determination of pressure factors and wall thickness46 Annex C (normat
14、ive) Pressure factor tables for fittings of type A.67 Annex D (informative) Wall thickness tables for fittings of type B 80 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of the EU Directive 97/23/EC96 Bibliography97 BS EN 10253-4:2008 Licensed copy
15、: The University of Hong Kong, The University of Hong Kong, Version correct as of 07/12/2008 07:50, (c) BSI EN 10253-4:2008 (E) 3 Foreword This document (EN 10253-4:2008) has been prepared by Technical Committee ECISS/TC 29 “ Steel tubes and fittings for steel tubes” , the secretariat of which is he
16、ld by UNI/UNSIDER. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2008, and conflicting national standards shall be withdrawn at the latest by September 2008. Attention is drawn to the
17、possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Tr
18、ade Association, and supports essential requirements of the EU Directive 97/23/EC. For relationship with the EU Directive 97/23/EC, see informative Annex ZA, which is an integral part of this document. EN 10253 comprises a series of European Standards about Butt-welding pipe fittings, namely: Part 1
19、: Wrought carbon steel for general use and without specific inspection requirements Part 2: Non alloy and ferritic alloy steels with specific inspection requirements Part 3: Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements Part 4: Wrought
20、austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements In writing EN 10253 the competent committee recognized that there are two broad types of products commonly used for stainless steels, and decided to reflect these in the standard by differentiating bet
21、ween two parts, Part 3 and Part 4. Part 4 defines two types of fittings: Type A fittings have the same wall thickness at the welding ends than a pipe having the same specified wall thickness. Their resistance to internal pressure is, in general, less than that of a straight pipe with the same dimens
22、ions. Type B fittings showing increased wall thickness at the body of the fitting are designed to resist the same internal pressure as a straight pipe with same dimensions. These two types of fittings are intended to be used in applications covered by the EU Directive 97/23/EC. According to this Dir
23、ective and further interpretation guidelines (e.g. guideline 7/19), seamless fittings are considered as materials whereas welded fittings are considered as components. Therefore, in some areas of this European Standard, provisions for seamless and welded fittings are different. The committee recogni
24、zed the need to provide a basic type in which the minimum wall thickness of the fitting is guaranteed without formal reference to the pressure resistance. This type is considered in Part 3 and includes products not intended for use in applications covered by the Pressure Equipment Directive category
25、 I IV except applications according to Article 3 Paragraph 3. Information about structural dimensions of fittings is given in Annex A. For fittings specified in accordance with this part of EN 10253, the resistance to internal pressure of the fitting may be determined by calculation. Annex B gives i
26、nformation about the calculation. For some wall thickness series Annex C lists pressure factors for fittings type A and Annex D lists wall thickness values for the body of the fittings of fittings type B. BS EN 10253-4:2008 Licensed copy: The University of Hong Kong, The University of Hong Kong, Ver
27、sion correct as of 07/12/2008 07:50, (c) BSI ? tenitieni c and austenitic-ferrand austenitic- ? the competent cothe competent ss steels, and decis steels, and de o ty t ? an intin pe fittingsting , nameam cific inspection rinspection r c inspection reqpection re erritic (duerritic (d EN 10253-4:2008
28、 (E) 4 According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
29、Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Introduction The European Committee for Standardisation (CEN) draws attention to the fact that it is claimed that compliance with this d
30、ocument may involve the use of patents applied to steel grade 1.4410, the compositions of which is given in Table 3. CEN takes no position concerning the evidence, validity and scope of these patent rights. The holder of these patent rights has assured CEN that they are willing to negotiate licences
31、, under reasonable and non-discriminatory terms and conditions, with applicants throughout the world. In this respect, the statements of the holders of these patent rights are registered with CEN. Information may be obtained from: Sandvik AB SE-811 81 SANDVIKEN Sweden Attention is drawn to the possi
32、bility that some of the elements within this document may be the subject of patent rights other than those indicated above. CEN shall not be responsible for identifying any or all such patents rights. BS EN 10253-4:2008 Licensed copy: The University of Hong Kong, The University of Hong Kong, Version
33、 correct as of 07/12/2008 07:50, (c) BSI ? espect, ct, ed from: m: ? ents within this within this be responsible fesponsible EN 10253-4:2008 (E) 5 1 Scope 1.1 This European Standard specifies the technical delivery requirements for seamless and welded butt-welding fittings (elbows, concentric and ec
34、centric 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
35、.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 conformi
36、ty 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 thi
37、s 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. 2 Normative references The following referenced documents are indispen
38、sable for the application 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 287-1, Qualification test of welders - Fusion welding - Part 1: Steels EN 473, Non destructiv
39、e testing - Qualification and certification of NDT personnel - General principles EN 910, Destructive tests on welds in metallic materials Bend test EN 1418, Welding personnel - Approval testing of welding operators for fusion welding and resistance weld setters for fully mechanized and automatic we
40、lding of metallic materials EN 10002-1, Metallic materials - Tensile testing - Part 1: Method of test at ambient temperature BS EN 10253-4:2008 Licensed copy: The University of Hong Kong, The University of Hong Kong, Version correct as of 07/12/2008 07:50, (c) BSI ? a harmonised suppomonised su is l
41、imited to technicalimited to tec f equipment. Conseqequipment. Conseq ? ents of this specifints of this spec ? EN 10253-4:2008 (E) 6 EN 10002-5, Metallic materials - Tensile testing - Part 5: Method of testing at elevated temperature EN 10021:2006, General technical delivery conditions for steel pro
42、ducts EN 10027-1, Designation systems for steels - Part 1: Steel names EN 10027-2, Designation systems for steels - Part 2: Numerical system EN 10028-7, Flat products made of steels for pressure purposes - Part 7: Stainless steels EN 10045-1, Metallic materials Charpy impact test - Part 1: Test meth
43、od EN 10088-2, Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes EN 10168, Steel products - Inspection documents - List of information and description EN 10204, Metallic products - Types of inspection documents EN 10
44、216-5, Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 5 : Stainless steel tubes EN 10217-7, Welded steel tubes for pressure purposes - Technical delivery conditions - Part 7: Stainless steel tubes EN 10266:2003,Steel tubes, fittings and structural hollow sections -
45、 Symbols and definitions of terms for use in product standards EN 10272, Stainless steel bars for pressure purposes EN 13445-3, Unfired pressure vessels - Part 3: Design EN 13480-3:2002, Metallic industrial piping - Part 3: Design and calculation EN ISO 377:1997, Steel and steel products - Location
46、and preparation of samples and test pieces for mechanical testing (ISO 377:1997) EN ISO 1127, Stainless steel tubes - Dimensions, tolerances and conventional masses per unit length (ISO 1127:1992) EN ISO 3166-1, Codes for the representation of names of countries and their subdivisions - Part 1: Coun
47、try codes (ISO 3166-1:2006) EN ISO 3651-2, Determination of resistance to intergranular corrosion of stainless steels - Part 2: Ferritic, austenitic and ferritic-austenitic (duplex) stainless steels - Corrosion test in media containing sulfuric acid (ISO 3651-2:1998) EN ISO 6708, Pipework components
48、 - Definition and selection of DN (nominal size) (ISO 6708:1995) EN ISO 14284, Steel and iron - Sampling and preparation of samples for the determination of chemical composition (ISO 14284:1996) EN ISO 15614-1, Specification and qualification of welding procedures for metallic materials - Welding pr
49、ocedure test - Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys (ISO 15614-1:2004) BS EN 10253-4:2008 Licensed copy: The University of Hong Kong, The University of Hong Kong, Version correct as of 07/12/2008 07:50, (c) BSI ? art 3: Design3: Desig strial piping - Part 3trial piping - Par el and steel producl and steel pro 997)997) ? ainless sinless ? 5 onditions