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1、BS EN 969:2009 ICS 23.040.10; 23.040.40 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Ductile iron pipes, fittings, accessories and their joints for gas pipelines Requirements and test methods Licensed CopyChinese University of Hong Kong, 13/06/2009 07:54, U
2、ncontrolled Copy, (c) BSI This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2009 BSI 2009 ISBN 978 0 580 58604 0 Amendments/corrigenda issued since publication DateComments BS EN 969:2009 National foreword This British Standard is the
3、UK implementation of EN 969:2009. It supersedes BS EN 969:1996 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PSE/10, Iron pipes and fittings. A list of organizations represented on this committee can be obtained on request to its secretary. This pub
4、lication 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. Licensed CopyChinese University of Hong Kong, 13/06/2009 07:54, Uncontrolled Copy, (c)
5、 BSI BS EN 969:2009BS EN 969:2009BS EN 969:2009BS EN 969:2009 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 969 March 2009 ICS 23.040.10; 23.040.40Supersedes EN 969:1995 English Version Ductile iron pipes, fittings, accessories and their joints for gas pipelines - Requirements and test method
6、s Tuyaux, raccords et accessoires en fonte ductile et leurs assemblages pour canalisations de gaz - Prescriptions et mthodes dessai Rohre, Formstcke, Zuberhrteile aus duktilem Gusseisen und ihre Verbindungen fr Gasleitungen - Anforderungen und Prfverfahren This European Standard was approved by CEN
7、on 10 February 2009. 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 and bibliographical references concerning such national standards
8、 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 responsibility of a CEN member into its own language and notified to th
9、e 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, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Nethe
10、rlands, 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: Avenue Marnix 17, B-1000 Brussels 2009 CENAll rights of exploitation i
11、n any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 969:2009: E Licensed CopyChinese University of Hong Kong, 13/06/2009 07:54, Uncontrolled Copy, (c) BSI BS EN 969:2009BS EN 969:2009BS EN 969:2009BS EN 969:2009 EN 969:2009 (E) 2 Contents Page Foreword 5? 1?Scope 6?
12、2?Normative references 6? 3?Terms and definitions .7? 4?Technical requirements 9? 4.1?General 9? 4.1.1?Ductile iron pipes and fittings 9? 4.1.2?Surface condition and repair . 10? 4.1.3?Types of joints and interconnection . 10? 4.2?Dimensional requirements . 11? 4.2.1?Wall thickness . 11? 4.2.2?Diame
13、ter . 12? 4.2.3?Length 12? 4.2.4?Straightness of pipes . 14? 4.3?Material characteristics 14? 4.3.1?Tensile properties . 14? 4.3.2?Hardness 14? 4.4?Coatings and linings for pipes 15? 4.4.1?General . 15? 4.4.2?External coating of zinc with finishing layer 16? 4.5?Coatings for fittings and accessories
14、. 16? 4.5.1?General . 16? 4.5.2?Paint coatings . 17? 4.6?Marking of pipes and fittings . 17? 4.7?Leak tightness . 18? 5?Performance requirements for joints 18? 5.1?General . 18? 5.2?Flexible joints 18? 5.2.1?General . 18? 5.2.2?Test conditions . 19? 5.2.3?Test parameters 19? 5.3?Restrained flexible
15、joints . 20? 5.4?Flanged joints as cast, screwed, welded and adjustable . 20? 6?Test methods . 21? 6.1?Pipe dimensions . 21? 6.1.1?Wall thickness . 21? 6.1.2?External diameter 21? 6.1.3?Internal diameter . 21? 6.1.4?Length 21? 6.2?Straightness of pipes . 22? 6.3?Tensile testing . 22? 6.3.1?Samples .
16、 22? 6.3.2?Preparation of test bar . 22? 6.3.3?Apparatus and test method . 23? 6.3.4?Test results 24? 6.4?Brinell hardness 24? 6.5?Works leak tightness test for pipes and fittings 24? 6.5.1?General . 24? 6.5.2?Centrifugally cast pipes . 24? Licensed CopyChinese University of Hong Kong, 13/06/2009 07
17、:54, Uncontrolled Copy, (c) BSI BS EN 969:2009BS EN 969:2009BS EN 969:2009BS EN 969:2009 EN 969:2009 (E) 3 6.5.3?Pipes not centrifugally cast and fittings . 25? 6.6?Zinc mass . 25? 6.7?Thickness of paint coatings . 26? 7?Performance test methods . 26? 7.1?Leak tightness of flexible joints to positiv
18、e internal pressure . 26? 7.2?Leak tightness of flexible push-in joints to positive external pressure 27? 7.3?Leak tightness and mechanical resistance of flanged joints . 28? 8?Tables of dimensions 28? 8.1?Socket and spigot pipes . 28? 8.2?Flanged pipes 29? 8.2.1?General . 29? 8.2.2?Centrifugally ca
19、st pipes with welded flanges . 30? 8.2.3?Centrifugally cast pipes with screwed flanges 30? 8.2.4?Pipes with integrally cast flanges 30? 8.3?Fittings for socketed joints 30? 8.3.1?General . 30? 8.3.2?Flanged sockets 30? 8.3.3?Flanged spigots . 31? 8.3.4?Collars 32? 8.3.5?Double socket 90 (1/4) bends
20、. 33? 8.3.6?Double socket 45 (1/8) bends . 33? 8.3.7?Double socket 2230 (1/16) bends 34? 8.3.8?Double socket 1115 (1/32) bends 35? 8.3.9?All socket tees . 36? 8.3.10?Double socket tees with flanged branch, DN 40 to DN 250 . 38? 8.3.11?Double socket tees with flanged branch, DN 300 to DN 600. 40? 8.3
21、.12?Double socket tapers 41? 8.4?Fittings for flanged joints . 43? 8.4.1?Double flanged 90 (1/4) bends 43? 8.4.2?Double flanged duckfoot 90 (1/4) bends 43? 8.4.3?Double flanged 45 (1/8) bends 45? 8.4.4?Double flanged 2230 (1/16) bends . 46? 8.4.5?Double flanged 1115 (1/32) bends . 46? 8.4.6?All-flan
22、ged tees, DN 40 to DN 250 47? 8.4.7?All-flanged tees, DN 300 to DN 600 49? 8.4.8?Double flanged tapers . 50? 8.4.9?Blank flanges PN 10 51? 8.4.10?Blank flanges PN 16 51? 8.4.11?Reducing flanges PN 10 52? 8.4.12?Reducing flanges PN 16 53? 9?Evaluation of conformity 54? 9.1?General . 54? 9.2?Initial p
23、erformance testing . 54? 9.2.1?General . 54? 9.2.2?Characteristics . 54? 9.2.3?Treatment of calculated values and design 54? 9.2.4?Sampling, testing and conformity criteria 55? 9.3?Factory production control (FPC) 55? 9.3.1?General . 55? 9.3.2?FPC requirements for all manufacturers. 56? 9.3.3?Manufa
24、cturer-specific FPC system requirements . 58? Annex A (normative) Longitudinal bending resistance of pipes . 60? Annex B (normative) Diametral stiffness of pipes 61? Annex C (informative) Field of use, characteristics of soils . 63? Annex D (informative) Calculation method of buried pipelines, heigh
25、ts of cover . 64? D.1?Calculation method . 64? Licensed CopyChinese University of Hong Kong, 13/06/2009 07:54, Uncontrolled Copy, (c) BSI BS EN 969:2009BS EN 969:2009BS EN 969:2009BS EN 969:2009 EN 969:2009 (E) 4 D.1.1?Calculation formula 64? D.1.2?Pressure from earth loading 64? D.1.3?Pressure from
26、 traffic loading . 65? D.1.4?Bedding factor, K 65? D.1.5?Factor of lateral pressure, f . 65? D.1.6?Modulus of soil reaction, E . 65? D.2?Heights of cover 66? Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives . 67? ZA.1?Sco
27、pe and relevant characteristics 67? ZA.2?Procedure for attestation of conformity of ductile iron pipes, fittings, accessories and their joints for gas applications. . 69? ZA.2.1?System of attestation of conformity . 69? ZA.2.2?Declaration of conformity 69? ZA.3?CE marking and labelling . 70? Bibliog
28、raphy . 73? Licensed CopyChinese University of Hong Kong, 13/06/2009 07:54, Uncontrolled Copy, (c) BSI BS EN 969:2009BS EN 969:2009BS EN 969:2009BS EN 969:2009 EN 969:2009 (E) 5 Foreword This document (EN 969:2009) has been prepared by Technical Committee CEN/TC 203 “Cast iron pipes, fittings and th
29、eir joints”, the secretariat of which is held by AFNOR. 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 2009, and conflicting national standards shall be withdrawn at the latest by Decem
30、ber 2010. Attention is drawn to the 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 supersedes EN 969:1995. This European Standard has been prepar
31、ed under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of the EU Construction Products Directive (89/106/EEC). This European Standard is in conformity with the general requirements already established by CEN/TC 165 “Was
32、te water engineering“ in the field of sewerage. Annex ZA includes the requirements of the mandate given under the EU Construction Products Directive (89/106/EEC). Only if the requirements specified in Annex ZA are met, the CE marking will be effected. For reasons of conformity with mandate M/131 “Pi
33、pes, tanks and ancillaries not in contact with water intended for human consumption”, EN 969 has been revised by extension with Annex ZA (see Resolution CEN/BT 113/1994 and CEN/BT 63/1996) and Clause 9 for the evaluation of conformity. According to the CEN/CENELEC Internal Regulations, the national
34、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, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Polan
35、d, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed CopyChinese University of Hong Kong, 13/06/2009 07:54, Uncontrolled Copy, (c) BSI BS EN 969:2009BS EN 969:2009BS EN 969:2009BS EN 969:2009 EN 969:2009 (E) 6 1 Scope This European Standard specifies
36、the requirements and associated test methods applicable to ductile iron pipes, fittings, accessories and their joints used for the construction of pipelines outside buildings: to convey air or combustible gases (e.g. natural gas or town gas) at pressures up to 16 bar; to be installed below or above
37、ground. NOTE 1 A combustible gas is a gas or any fuel that is in gaseous state at a temperature of 15 C at a pressure of 1 bar. This European Standard applies to pipes, fittings and accessories which are: manufactured with socketed, flanged or spigot ends; normally delivered externally and internall
38、y coated; suitable for gas temperatures between 15 C and 50 C. This European Standard covers pipes, fittings and accessories cast by any type of foundry process or manufactured by fabrication of cast components, as well as corresponding joints, in a size range extending from DN 40 to DN 600 inclusiv
39、e. This European Standard specifies requirements for materials, dimensions and tolerances, mechanical properties and standard coatings of ductile iron pipes and fittings. It also gives performance requirements for all components including joints. Joint design and gasket shape are outside the scope o
40、f this European Standard. NOTE 2 In this European Standard, all pressures are relative pressures expressed in bars (100 kPa = 1 bar). 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies
41、. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 545:2006, Ductile iron pipes, fittings, accessories and their joints for water pipelines Requirements and test methods EN 681-1, Elastomeric seals Material requirements for pipe joint seals
42、 used in water and drainage applications Part 1: Vulcanized rubber EN 682, Elastomeric seals Material requirements for seals used in pipes and fittings carrying gas and hydrocarbon fluids EN 1092-2, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated
43、Part 2: Cast iron flanges EN 10002-1, Metallic materials Tensile testing Part 1: Method of test at ambient temperature EN ISO 4016, Hexagon head bolts Product grade C (ISO 4016:1999) EN ISO 4034, Hexagon nuts Product grade C (ISO 4034:1999) EN ISO 6506-1, Metallic materials Brinell hardness test Par
44、t 1: Test method (ISO 6506-1:2005) EN ISO 7091, Plain washers Normal series Product grade C (ISO 7091:2000) Licensed CopyChinese University of Hong Kong, 13/06/2009 07:54, Uncontrolled Copy, (c) BSI BS EN 969:2009BS EN 969:2009BS EN 969:2009BS EN 969:2009 EN 969:2009 (E) 7 3 Terms and definitions Fo
45、r the purposes of this European Standard, the following terms and definitions apply. 3.1 ductile iron cast iron used for pipes, fittings and accessories in which graphite is present substantially in spheroidal form 3.2 pipe casting of uniform bore, straight in axis, having either socket, spigot or f
46、langed ends, except for flanged socket pieces, flanged spigot pieces and collars which are classified as fittings 3.3 fitting casting other than a pipe which allows pipeline deviation, change of direction or bore; in addition flanged socket pieces, flanged spigot pieces and collars are also classifi
47、ed as fittings 3.4 accessory any casting other than a pipe or fitting which is used in a pipeline, for example: glands and bolts for mechanical flexible joints (see 3.13) glands, bolts and locking rings for restrained flexible joints (see 3.14) pipe saddles for service cock connection adjustable fla
48、nges and flanges to be welded or screwed-on NOTE Valves of all types are not covered by the term accessory. 3.5 flange flat circular end of a pipe or fitting extending perpendicular to its axis, with bolt holes equally spaced on a circle NOTE A flange may be fixed (e.g. integrally cast or welded) or
49、 adjustable; an adjustable flange comprises a ring, in one or several parts assembled together, which bears on an end hub and can freely rotate around the barrel axis before jointing. 3.6 spigot male end of a pipe or fitting 3.7 spigot end maximum insertion depth of the spigot plus 50 mm 3.8 socket female end of a pipe or fitting to make the connection with the spigot of the next component 3.9 gasket sealing component of a joint Licensed CopyChinese University of Hong Kong, 13/06/2009 07:54, Uncontrolled Co
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