1、July 2009DEUTSCHE NORM English price group 25No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 23.040.10; 23.040.40!$Xj“
2、1537129www.din.deDDIN EN 969Ductile iron pipes, fittings, accessories and their joints for gaspipelines Requirements and test methodsEnglish version of DIN EN 969:2009-07Rohre, Formstcke, Zubehrteile aus duktilem Gusseisen und ihre Verbindungen frGasleitungen Anforderungen und PrfverfahrenEnglische
3、Fassung DIN EN 969:2009-07SupersedesDIN EN 969:1995-11 andDIN EN 969/A1:1999-04www.beuth.deDocument comprises 77 pagesDIN EN 969:2009-07 2 National foreword This standard has been prepared by Technical Committee CEN/TC 203 “Cast iron pipes, fittings and their joints” (Secretariat: AFNOR, France). Th
4、e responsible German body involved in its preparation was the Normenausschuss Rohrleitungen und Dampfkesselanlagen (Piping and Boiler Plant Standards Committee), Technical Committee NA 082-00-05 AA Gusseiserne Druckrohre und Formstcke. Amendments This standard differs from DIN EN 969:1995-11 and DIN
5、 EN 969/A1:1999-04 as follows: a) Normative references have been updated. b) Clause 9 “Evaluation of conformity” has been added. c) Annex ZA relating to the requirements of the mandate given under the EU Construction Products Directive (89/106/EEC) has been added. DIN EN 969:2009-07 3 Previous editi
6、ons DIN EN 969: 1995-11 DIN 28530-2: 1963-12 DIN EN 969/A1: 1999-04 DIN 28530-3: 1963-12 DIN 2422: 1935-02, 1949-06 DIN 28532-1: 1963-12 DIN 2431: 1938-02 DIN 28532-2: 1963-12 DIN 2833: 1934-09, 1935-02, 1938x-05 DIN 28532-3: 1963-12 DIN 2834: 1934-09, 1935-02, 1938-05 DIN 28534-1: 1963-12 DIN 2839:
7、 1934-09, 9 1938-05 DIN 28534-2: 1963-12 DIN 2840: 1934-09, 1935-02, 1938-05 DIN 28534-3: 1963-12 DIN 2841: 1934-09, 1935-02, 1938-05 DIN 28537: 1963-12 DIN 2846: 1943-03 DIN 28538: 1963-12 DIN 2847: 1943-03 DIN 28539: 1963-12 DIN 2849: 1943x-03 DIN 28543: 1963-12 DIN 2850: 1943-03 DIN 28546: 1963-1
8、2 DIN 2851: 1943-03 DIN 28600: 1968-08, 1977-08, 1983-01 DIN 28511: 1962-03 DIN 28610: 1968-08, 1977-08 DIN 28512: 1962-03 DIN 28610-1: 1983-01 DIN 28513: 1962-03 DIN 28610-2: 1983-01 DIN 28514: 1966-03 DIN 28614: 1970-11, 1977-08, 1990-01 DIN 28522-1: 1963-12 DIN 28615: 1976-03 DIN 28522-2: 1963-12
9、 DIN 28615-1: 1990-01 DIN 28522-3: 1963-12 DIN 28615-2: 1990-01 DIN 28523: 1963-12 DIN 28622: 1970-11, 1977-08, 1990-01 DIN 28524-1: 1963-12 DIN 28623: 1970-11, 1977-08, 1990-01 DIN 28524-2: 1963-12 DIN 28624: 1970-11, 1977-08, 1990-01 DIN 28524-3: 1963-12 DIN 28625: 1970-11, 1977-08, 1990-01 DIN 28
10、525-1: 1963-12 DIN 28626: 1970-11, 1977-08, 1990-01 DIN 28525-2: 1963-12 DIN 28628: 1970-11, 1977-08, 1990-01 DIN 28525-3: 1963-12 DIN 28629: 1970-11, 1990-01 DIN 28526-1: 1963-12 DIN 28630: 1970-11, 1977-08, 1990-01 DIN 28526-2: 1963-12 DIN 28632: 1970-11, 1977-08, 1990-01 DIN 28526-3: 1963-12 DIN
11、28634: 1970-11, 1977-08, 1990-01 DIN 28528-1: 1963-12 DIN 28637: 1970-11, 1977-08, 1990-01 DIN 28528-2: 1963-12 DIN 28638: 1970-11, 1977-08, 1990-01 DIN 28528-3: 1963-12 DIN 28639: 1970-11, 1977-08, 1990-01 DIN 28529-1: 1963-12 DIN 28643: 1970-11, 1977-08, 1990-01 DIN 28529-2: 1963-12 DIN 28645: 197
12、0-11, 1977-08, 1990-01 DIN 28529-3: 1963-12 DIN 28646: 1970-11, 1977-08, 1990-01 DIN 28530-1: 1963-12 DIN 30674-3: 1982-09, 2001-03DIN EN 969:2009-07 4 This page is intentionally blank EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 969March 2009ICS 23.040.10; 23.040.40 Supersedes EN 969:1995 Engl
13、ish VersionDuctile iron pipes, fittings, accessories and their joints for gaspipelines - Requirements and test methodsTuyaux, raccords et accessoires en fonte ductile et leursassemblages pour canalisations de gaz - Prescriptions etmthodes dessaiRohre, Formstcke, Zuberhrteile aus duktilem Gusseisenun
14、d ihre Verbindungen fr Gasleitungen - Anforderungenund PrfverfahrenThis European Standard was approved by CEN on 10 February 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standar
15、d without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 lang
16、uage made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
17、France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR
18、 NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 969:2009: EEN 969:2009 (E) 2 Contents Page Foreword 51 Scope 62 Normative references 63 Terms and definitions .74 Techn
19、ical requirements 94.1 General 94.1.1 Ductile iron pipes and fittings 94.1.2 Surface condition and repair . 104.1.3 Types of joints and interconnection . 104.2 Dimensional requirements . 114.2.1 Wall thickness . 114.2.2 Diameter . 124.2.3 Length 124.2.4 Straightness of pipes . 144.3 Material charact
20、eristics 144.3.1 Tensile properties . 144.3.2 Hardness 144.4 Coatings and linings for pipes 154.4.1 General . 154.4.2 External coating of zinc with finishing layer 164.5 Coatings for fittings and accessories. 164.5.1 General . 164.5.2 Paint coatings . 174.6 Marking of pipes and fittings . 174.7 Leak
21、 tightness . 185 Performance requirements for joints 185.1 General . 185.2 Flexible joints 185.2.1 General . 185.2.2 Test conditions . 195.2.3 Test parameters 195.3 Restrained flexible joints . 205.4 Flanged joints as cast, screwed, welded and adjustable . 206 Test methods . 216.1 Pipe dimensions .
22、216.1.1 Wall thickness . 216.1.2 External diameter 216.1.3 Internal diameter . 216.1.4 Length 216.2 Straightness of pipes . 226.3 Tensile testing . 226.3.1 Samples . 226.3.2 Preparation of test bar . 226.3.3 Apparatus and test method . 236.3.4 Test results 246.4 Brinell hardness 246.5 Works leak tig
23、htness test for pipes and fittings 246.5.1 General . 246.5.2 Centrifugally cast pipes . 24DIN EN 969:2009-07 EN 969:2009 (E) 3 6.5.3 Pipes not centrifugally cast and fittings . 256.6 Zinc mass . 256.7 Thickness of paint coatings . 267 Performance test methods . 267.1 Leak tightness of flexible joint
24、s to positive internal pressure . 267.2 Leak tightness of flexible push-in joints to positive external pressure 277.3 Leak tightness and mechanical resistance of flanged joints . 288 Tables of dimensions 288.1 Socket and spigot pipes . 288.2 Flanged pipes 298.2.1 General . 298.2.2 Centrifugally cast
25、 pipes with welded flanges . 308.2.3 Centrifugally cast pipes with screwed flanges 308.2.4 Pipes with integrally cast flanges 308.3 Fittings for socketed joints 308.3.1 General . 308.3.2 Flanged sockets 308.3.3 Flanged spigots . 318.3.4 Collars 328.3.5 Double socket 90 (1/4) bends . 338.3.6 Double s
26、ocket 45 (1/8) bends . 338.3.7 Double socket 2230 (1/16) bends 348.3.8 Double socket 1115 (1/32) bends 358.3.9 All socket tees . 368.3.10 Double socket tees with flanged branch, DN 40 to DN 250 . 388.3.11 Double socket tees with flanged branch, DN 300 to DN 600. 408.3.12 Double socket tapers 418.4 F
27、ittings for flanged joints . 438.4.1 Double flanged 90 (1/4) bends 438.4.2 Double flanged duckfoot 90 (1/4) bends 438.4.3 Double flanged 45 (1/8) bends 458.4.4 Double flanged 2230 (1/16) bends . 468.4.5 Double flanged 1115 (1/32) bends . 468.4.6 All-flanged tees, DN 40 to DN 250 478.4.7 All-flanged
28、tees, DN 300 to DN 600 498.4.8 Double flanged tapers . 508.4.9 Blank flanges PN 10 518.4.10 Blank flanges PN 16 518.4.11 Reducing flanges PN 10 528.4.12 Reducing flanges PN 16 539 Evaluation of conformity 549.1 General . 549.2 Initial performance testing . 549.2.1 General . 549.2.2 Characteristics .
29、 549.2.3 Treatment of calculated values and design 549.2.4 Sampling, testing and conformity criteria 559.3 Factory production control (FPC) 559.3.1 General . 559.3.2 FPC requirements for all manufacturers. 569.3.3 Manufacturer-specific FPC system requirements . 58Annex A (normative) Longitudinal ben
30、ding resistance of pipes . 60Annex B (normative) Diametral stiffness of pipes 61Annex C (informative) Field of use, characteristics of soils . 63Annex D (informative) Calculation method of buried pipelines, heights of cover . 64D.1 Calculation method . 64DIN EN 969:2009-07 EN 969:2009 (E) 4 D.1.1 Ca
31、lculation formula 64D.1.2 Pressure from earth loading 64D.1.3 Pressure from traffic loading . 65D.1.4 Bedding factor, K 65D.1.5 Factor of lateral pressure, f . 65D.1.6 Modulus of soil reaction, E . 65D.2 Heights of cover 66Annex ZA (informative) Clauses of this European Standard addressing essential
32、 requirements or other provisions of EU Directives . 67ZA.1 Scope and relevant characteristics 67ZA.2 Procedure for attestation of conformity of ductile iron pipes, fittings, accessories and their joints for gas applications. . 69ZA.2.1 System of attestation of conformity . 69ZA.2.2 Declaration of c
33、onformity 69ZA.3 CE marking and labelling . 70Bibliography . 73DIN EN 969:2009-07 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 their joints”, the secretariat of which is held by AFNOR. This European Standard
34、 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 December 2010. Attention is drawn to the possibility that some of the elements of t
35、his 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 prepared under a mandate given to CEN by the European Commission and the European Fr
36、ee 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 “Waste water engineering“ in the field of sewerage. Annex ZA includes the requirem
37、ents 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 “Pipes, tanks and ancillaries not in contact with water intended for human consum
38、ption”, 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 standards organizations of the following countries are bound to implement this
39、 European Standard: 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 the U
40、nited Kingdom. DIN EN 969:2009-07 EN 969:2009 (E) 6 1 Scope This European Standard specifies 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 ga
41、ses (e.g. natural gas or town gas) at pressures up to 16 bar; to be installed below or above 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: ma
42、nufactured with socketed, flanged or spigot ends; normally delivered externally and internally 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 compone
43、nts, as well as corresponding joints, in a size range extending from DN 40 to DN 600 inclusive. 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 requiremen
44、ts for all components including joints. Joint design and gasket shape are outside the scope of 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 indispensab
45、le 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 545:2006, Ductile iron pipes, fittings, accessories and their joints for water pipelines Require
46、ments and test methods EN 681-1, Elastomeric seals Material requirements for pipe joint seals 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
47、and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated 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 nut
48、s Product grade C (ISO 4034:1999) EN ISO 6506-1, Metallic materials Brinell hardness test Part 1: Test method (ISO 6506-1:2005) EN ISO 7091, Plain washers Normal series Product grade C (ISO 7091:2000) DIN EN 969:2009-07 EN 969:2009 (E) 7 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply.
