BS-EN-10253-2-2007.pdf
《BS-EN-10253-2-2007.pdf》由会员分享,可在线阅读,更多相关《BS-EN-10253-2-2007.pdf(128页珍藏版)》请在三一文库上搜索。
1、BRITISH STANDARD BS EN 10253-2:2007 Butt-welding pipe fittings Part 2: Non alloy and ferritic alloy steels with specific inspection requirements The European Standard EN 10253-2:2007 has the status of a British Standard ICS 23.040.40 ? BS EN 10253-2:2007 This British Standard was published under the
2、 authority of the Standards Policy and Strategy Committee on 30 November 2007 BSI 2007 ISBN 978 0 580 53080 7 National foreword This British Standard is the UK implementation of EN 10253-2:2007. Together with BS EN 10253-1:1999 it supersedes BS 1965-1:1963, which is withdrawn. It partially supersede
3、s BS 1640-1:1962, and BS 1640-3:1968, which will be withdrawn upon publication of BS EN 10253-3 and BS EN 10253-4. 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 o
4、btained on request 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 issued since publication Amd.
5、No. DateComments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10253-2 October 2007 ICS 77.140.45; 23.040.40 English Version Butt-welding pipe fittings - Part 2: Non alloy and ferritic alloy steels with specific inspection requirements Raccords souder bout bout - Partie 2: Aciers non allis et
6、 aciers ferritiques allis avec contrle spcifique Formstcke zum Einschweien - Teil 2: Unlegierte und legierte ferritische Sthle mit besonderen Prfanforderungen This European Standard was approved by CEN on 18 August 2007. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which
7、 stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Sta
8、ndard 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 CEN Management Centre has the same status as the official versions. CEN members are the national s
9、tandards bodies of Austria, Belgium, Bulgaria, 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 and United
10、 Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10253-2:2007:
11、 E EN 10253-2:2007 (E) 2 Contents Foreword4 1 Scope 5 2 Normative references5 3 Terms and definitions .7 4 Symbols9 5 Designations 10 5.1 Designation of steel grades10 5.2 Designation of fittings.10 6 Information to be supplied by the purchaser .10 6.1 Mandatory information10 6.2 Options .11 6.3 Exa
12、mples of an order 12 7 Resistance to internal pressure.12 7.1 General12 7.2 Fittings of type A12 7.3 Fittings of type B13 8 Manufacturing process .13 8.1 Steelmaking process.13 8.2 Product making process for fittings and heat treatment.13 9 Technical requirements 17 9.1 General17 9.2 Chemical compos
13、ition 17 9.3 Mechanical properties.19 9.4 Weldability24 10 Appearance and internal soundness.24 11 Dimensions and tolerances25 11.1 Dimensions.25 11.2 Dimensional tolerances 39 11.3 End finishing43 12 Inspection.44 12.1 Type of inspection.44 12.2 Inspection documents.44 12.3 Summary of inspection an
14、d testing.45 13 Sampling.46 EN 10253-2:2007 (E) 3 13.1 Frequency of tests.46 13.2 Preparation of samples and test pieces47 14 Test methods.48 14.1 Chemical analysis .48 14.2 Tensile test on the base material.49 14.3 Transverse tensile test on the weld.49 14.4 Hardness test.49 14.5 Weld bend test.49
15、14.6 Impact testing 49 14.7 Dimensional testing 50 14.8 Visual inspection.50 14.9 Non destructive testing.50 14.10 Material identification53 15 Marking.53 15.1 Marking to be applied53 15.2 Methods54 16 Protection and packaging 54 Annex A (informative) Determination of pressure factors and wall thick
16、ness.55 Annex B (informative) Pressure factor tables for Fittings of type A79 Annex C (informative) Wall thickness tables for Fittings of type B.97 Annex D (informative) Recommended heat treatment temperatures 122 Annex ZA (informative) Relationship between this European Standard and the Essential R
17、equirements of EU Directive 97/23/EC123 Bibliography125 EN 10253-2:2007 (E) 4 Foreword This document (EN 10253-2:2007) has been prepared by Technical Committee ECISS/TC 29 “Steel tubes and fittings for steel tubes”, the secretariat of which is held by UNI/UNSIDER. This European Standard shall be giv
18、en the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2008, and conflicting national standards shall be withdrawn at the latest by May 2008. This document has been prepared under a mandate given to CEN by the European Commission and
19、the European Free Trade Association, and supports essential requirements of EU Directive (97/23/EC). For relationship with EU Directive, 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: P
20、art 1 : 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 :
21、 Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements In writing this European Standard the competent committee recognized that there are two broad types of products commonly used, and decided to reflect these in the standard by differentiating b
22、etween two parts. EN 10253-1 describes fittings without formal reference to the pressure resistance, which are not intended to be used in applications covered by the Pressure Equipment Directive (97/23/EC). EN 10253-2 defines two types of fittings : Type A fittings have the same wall thickness at th
23、e welding ends and at the body of the fitting 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 dimensions. Type B fittings showing increased wall thickness at the body of the fitting are design
24、ed 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 Directive and further interpretation guidelines (e.g. guideline 7/19), seamless fittings are co
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- BS EN 10253 2007
链接地址:https://www.31doc.com/p-3737099.html