1、 STD.BSI BS EN 10253-3-ENGL 1999 m lb24bb9 0820389 4TO m BS EN 10253-1: 1999 BRITISH STANDARD Butt-welding pipe fittings - Part 1: Wrought carbon steel for general use and without specific inspection requirements The European Standard EN 10253-1:1999 has the status of a British Standard ICs 23.040.4
2、0 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW _ STD.BSI BS EN 10253-1-ENGL L999 1624669 OBt0190 112 Amd. No. BS EN 10253-1:1999 Date Comments National foreword This British Standard is the Enghsh language version of EN 10253-1:1999. Together with BS EN 10253-2 it will supe
3、rsede BS 1965-1:1963, which will be withdrawn upon publication of BS EN 10253-2. The K participation in its preparation was entrusted to Technical Committee ISW19, Ferrous pipe fittings (excluding cast iron), which has the responsibiiity to: - aid enquirers to understand the tex$ - present to the re
4、sponsible European committee any enquiries on the - monitor related international and European developments and promulgate interpretation, or proposals for change, and keep the UK interests informed them in the UK. A list of organizations represented on this committee can be obtahed on request to it
5、s secretary. Cross-references The British Sandards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “Intrnational Standards Correspondence Index“, or by using the “Find“ facility of the BSI Stan
6、dards Electronic Catalogue. A British Standard does not purport to include ail the necessary provisions of a contmct. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pag
7、es This document comprises a front cover, an inside front cover, the EN titie page, pages 2 to 33 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. This British Standard, having been prepared under the dimtion of the Engineering Sector
8、 Committee, was published under the authority of the Standards Committee and comes into effect on i5 December 1999 ISBN O 580 32846 5 - STD-BSI BS EN 10253-L-ENGL 1999 Lb2YbbS 0620191 059 W EUROPEAN STANDARD NORME EUROPENNE EUR0P)USCHE NORM EN 10253-1 September 1999 ICs 23.040.40 English version But
9、t-welding pipe fittings - Part 1: Wrought carbon steel for general use and without specific inspection requirements Raccords souder bout bout - Pattie 1: Acier au carbone pour usages gbnraux et sans contrle spcifique FomstOcke zum Einschweien -Teil 1: Untlegierter Stahl fr allgemeine Anwendungen und
10、 ohne besondere Prfanforderungen This European Standard was approved by CEN on 2 July 1999. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date l
11、ists and bibliographical references concerning sich national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by traislation under the res
12、ponsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as tie oficial versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland. Italy. Luxembourg, Ne
13、therlands, Noway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION EUROPISCHES KOMITEE FR NORMUNG COMIT EUROPEN DE NORMALISATION Centrai Secretariat: rue de Stassart, 36 8-1050 Brussels O 1999 CEN All rights of exploitation in any form and by any means
14、reserved worldwide for CEN national Members. Ref. No. EN 10253-1:1999 E . . STDmBSI BS EN L0253-L-ENGL L777 Lb24bb7 0820192 T95 Page 2 EN 10253-1:1999 Contents Foreword 3 1 1 . 1 1.2 1.3 2 3 3.1 3.2 4 4.1 4.2 4.3 5 5.1 5.2 6 6.1 6.2 6.3 7 7.1 7.2 7.3 8 8.1 8.2 8.3 9 9.1 9.2 9.3 9.4 io 11 Scope . 4 S
15、cope . 4 Limitation of use 4 Technical delivery conditions . 4 Normative references 4 Definitions and symbols 5 Definitions - 5 Symbols 5 Information to be supplied by the purchaser - . 6 Mandatory information Options . Examples . 7 Manufacturing process 8 Steelmaking process . 8 Fitting-making proc
16、ess and heat treatment 8 Metallurgical properties . 9 Mechanical characteristics . 9 Weldability 10 Dimensions and tolerances 10 Dimensions . 10 Tolerances on dimensions 23 End finishing . 25 Appearance, imperfections and repair 27 Appearance . 27 Imperfections . .- . 27 Repair . . 27 Inspection and
17、 testing . 2. . General 28 Inspection documents . I . 28 Summary of inspection and testing . 28 Inspection and test methods 28 Marking 29 Protection and packaging . 30 Chemical composition . - . 9 Annex A (normative) Alternative specification for all types of fittings . 31 A.1 Steel grade 31 A.2 Dim
18、ensions . 31 Annex B (informative) Adeviation 33 Q BSI 12-1999 STDmBSI BS EN 10253-1-ENGL 1999 = Lb24669 0820193 921 E Page 3 EN 10253-1 :I 999 Foreword This European Standard has been prepared by Technical Committee ECISSTTC 29 “Steel tubes and fittings for steel tubes“, the Secretariat of which is
19、 held by UNI. 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 March 2000, and conflicting national standards shall be withdrawn at the latest by March 2000. This European Standard has been prepare
20、d under a mandate given to CEN by the European Commission and the European Free Trade Association. This European Standard is considered to be a supporting standard to those application and product standards which in themselves support an essential safety requirement of a New Approach Directive and w
21、hich make reference to this European Standard. In writing the European Standard EN 10253, the competent committee recognized that there are two broad types of products commonly used and decided to reflect these in the standard by the differentiation between two parts. Firstly the committee recognize
22、d 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 1 ; it consists of fittings which are not intended to be used in applications covered by the European Pressure Equi
23、pment Directive. Secondly the equipment standards under the Pressure Equipment Directive will impose that the fitting has a defined resistance to internal pressure. This approach imposes enhanced requirements that are considered in Part 2. Pari 1 : fittings are not designed to fulfil specific design
24、 requirements in regard of pressure resistance and are only defined by their chemical composition, mechanical characteristics and dimensions (outside diameter, wall thickness, radius .). Part 2 : fittings are designed to fulfil specific design requirements. It is the ultimate responsibility of the u
25、ser to select the appropriate part for the intended application. NOTE This European Standard intends to reflect the needs of various national markets ; consequently it offers in a normative annex an alternative solution for an associated combination of steel grade and dimensions (see clause 1). Acco
26、rding to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal
27、, Spain, Sweden, Switzerland and the United Kingdom. O BSI 12-1999 STDmBSI BS EN 10253-1-ENGL 3ib24bb9 0820194 ab8 W Page 4 EN 10253-1 :1999 1 Scope 1.1 Scope This European Standard specifies requirements for steel butt-welding fittings (elbows and return bends, concentric and eccentric reducers, eq
28、ual and reducing tees, dished ends and caps) made of wrought carbon steel and delivered without specific inspection. The fittings described in this European Standard do not fulfil specific design requirements ; consequently they cannot be considered as conforming to the Essential Requirements of the
29、 Pressure Equipment Directive (Directive 97/23/EC of 29.05.1997). It specifies : - the steel grade and its chemical composition ; - the mechanical characteristics : - the dimensions and tolerances ; - the technical conditions for inspection and testing ; - the marking, packaging and inspection docum
30、ents. When steel grade S265 is specified in 4.1.2, the normative annex A applies and takes preference over conflicting requirements in the relevant areas of the main text. Another part of this European Standard (describing fittings intended to fulfil the Essential Requirements of the PED) is : - But
31、t-welding pipe fittings - Part 2 : Wrought carbon and ferritic alloy steels with specific inspection requirements. 1.2 Limitation of use The allowed pressures and temperatures are the responsibility of the customer according to the state of the art and in application of the safety coefficients speci
32、fied in the applicable regulations, codes or standards. 1.3 Technical delivery conditions Unless otherwise specified in this European Standard the general technical delivery conditions specified in EN 10021 apply. 2 Normative references This European Standard incorporates by dated or undated referen
33、ces, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporat
34、ed in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. EN 287-1, Approval testing of welders - Fusion welding - Patt 7 : Steels. EN 288-1, Specification and qualification of welding procedures for metallic materials - Part 7 : General ru
35、les for fusion welding. EN 10002-1, Metallic materials - tensile tesfini. Part 1 Method of fest (at ambient temperature). O BSI 12-1999 Page 5 EN 10253-1 1 999 EN 10003-1, Metallic materials - Brinell hardness testing - Part 7 : Method of test. EN 10020, Definitions and classification of grades of s
36、teel. EN 1002 1 , General technical delivery requirements for iron and steel. EN 10052, Vocabulary of heat treatment terms for femus products. EN 10079, Definition of steel products. EN 10204, Metallic products - Types of inspection documents. EN IS0 6708, Pipework components - Definition and select
37、ion of DN (nominal size). EN 10246-7, Non destructive testing of steel tubes - Pad 7 : Automatic full peripheral ultrasonic testing of seamless and welded (except submerged arc welded) steel tubes for the detection of longitudinal imperfections. prEN 10246-8? ), Non destructive testing of steel tube
38、s - Part 8 : Automatic ultrasonic testing of the weld seam of electric welded tubes for the detection of longitudinal imperfections IS0 3166, Codes for the representation of names of countries. 3 Definitions and symbols 3.1 Definitions For the purpose of this European Standard the definitions in EN
39、10020, EN 10021, EN 10052 and EN 10079 shall apply. In addition following definitions apply : type For elbows and return bends the type defines the bending radius of the piece. Possible types are : - type2D:R-1D; - type3D:R=11,5D; - type 5D : R = 2,5D. welded fitting Fitting made from a welded tube
40、or fitting where welding is part of the fabrication of the fitting. 3.2 Symbols DN Conventional dimension used in piping ; non measurable value (See EN IS0 6708) D Specified outside diameter for elbows, return bends, equal tees and large diameter for reducers and reducing tees, in millimetres Dl Spe
41、cified small outside diameter for reducers and reducing tees, in millimetres T Specified wall thickness at the welding ends, in millimetres ?) In preparation. Until this document is published as a European Standard, the corresponding national standard should be agreed at the time of enquiry and orde
42、r. O BSI 12-1999 STD-BSI BS EN L0253-L-ENGL 1777 lb24bb7 082019b b30 Page 6 EN 10253-1 1999 TI R C B F G h H Kl K2 L Q Rrn ReH A HB Specified wall thickness at the welding end of the D, face of reducers and reducing tees, in millimetres Radius of elbows and return bends, in millimetres Centre to cen
43、tre distance for return bends (C = 217, in millimetres Face to top distance for return bends, in millimetres Distance from the axis of the branch outlet to the face of the centre body of tees, in millimetres Distance from the axis of the centre line to the face of the branch outlet of reducing tees,
44、 in millimetres Height of the straight part of dished ends, in millimetres Face to centre distance for 45“ elbows, in millimetres Internal height for dished ends, in millimetres Total height for caps, in millimetres Face to face distance for reducers, in millimetres Tolerance on the form for fitting
45、s Tensile strength at room temperature, in Newton per square millimetre Upper yield limit at room temperature, in Newton per square millimetre Percentage of elongation at rupture, with reference to a gauge length of 5,65 - for return bends : The type (20, 30 or 5D), the outside diameter 0 and the wa
46、ll thickness T ; - reducers: - the form (1 or 2), the large diameter 0 and the wall thickness T, the small diameter Dl and the wall thickness il. - The form does not apply for eccentric reducers ; O BSI 12-1999 STD-BSI BS EN 10253-II-ENGL 1999 Lb24669 0820L97 577 m Page 7 EN 10253-1 :1999 - tees: -
47、for equal tees : The outside diameter D and the wall thickness T ; - for reducing tees : The large diameter D and the wall thickness T, the small diameter Dl and the wall thickness TI ; - dished ends : - the outside diameter D and the wall thickness T ; - caps : - the outside diameter D and the wall
48、 thickness T. 4.1.2 The enquiry and order shall include following information : - quantity; - designation of fittings ; - steel grade (see clause 6 and annex A) ; - reference to this European Standard. 4.2 Options A number of options are specified in this European Standard and these are listed below
49、. In the event that the purchaser does not indicate his wish to implement any of these options at the time of enquiry and order, the supplier shall supply in accordance with the basic specification : - type of tube as starting product (seamless or welded). See 5.2.1 ; - definition of coating. See clause 11, 4.3 Examples EXAMPLE 1 : 1 O00 elbows in accordance with this European Standard of type 30 with angle 90“ and dimensions 60,3 X 2,9 made of steel grade S235. 1 O00 elbows - EN 10253-1 - type 30 - 90“ - 60,3 X 2,9 - S235. EXAMPLE 2 :
