1、BSI Standards PublicationBS ISO 4437-1:2014Plastics piping systems forthe supply of gaseous fuels -Polyethylene (PE)Part 1: GeneralBS ISO 4437-1:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 4437-1:2014.T o g e t h e r w i t h B S I S O 4 4 3 7 - 2 : 201
2、4, BS ISO 4437-3:2014 and BS ISO 4437-5:2014, it supersedes BS ISO 4437:2007, BS ISO 8085-1:2001, BS ISO 8085-2:2001 and BS ISO 8085-3:2001, which are withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/88/2, Plastics piping for pressure applications.A list of
3、organizations represented on this committee can be obtained 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. The British Standards Institution 2014.Published by BSI Standards Limite
4、d 2014ISBN 978 0 580 77429 4ICS 75.200; 83.140.30Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2014.Amendments/corrigenda issued since publicationDa
5、te T e x t a f f e c t e dBS ISO 4437-1:2014 ISO 2014Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) Part 1: GeneralSystmes de canalisations en matires plastiques pour la distribution de combustibles gazeux Polythylne (PE) Partie 1: GnralitsINTERNATIONAL STANDARDISO4437-1
6、First edition2014-01-15Reference numberISO 4437-1:2014(E)BS ISO 4437-1:2014ISO 4437-1:2014(E)ii ISO 2014 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2014All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any
7、means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Genev
8、a 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 4437-1:2014ISO 4437-1:2014(E) ISO 2014 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 33.1 Geometrical defini
9、tions . 33.2 Material definitions . 43.3 Definitions related to material characteristics 53.4 Definitions related to service conditions . 63.5 Definitions related to joints . 64 Symbols 75 Abbreviated terms 76 Material 86.1 Material of the components . 86.2 Compound . 86.3 Fusion compatibility . 116
10、.4 Classification and designation 116.5 Design coefficient and design stress . 126.6 Change of compound formulation . 12Annex A (informative) LPG and manufactured gas .13Bibliography .14BS ISO 4437-1:2014ISO 4437-1:2014(E)ForewordISO (the International Organization for Standardization) is a worldwid
11、e federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that
12、 committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this docume
13、nt and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives
14、, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development
15、 of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specif
16、ic terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 138, Plastics pipes,
17、fittings and valves for the transport of fluids, Subcommittee SC 4, Plastics pipes and fittings for the supply of gaseous fuels.This first edition of ISO 4437-1 together with the first editions of ISO 4437-2, ISO 4437-3 and ISO 4437-5 cancel and replace ISO 4437:2007, ISO 8085-1:2001, ISO 8085-2:200
18、1 and ISO 8085-3:2001, of which they constitute a technical revision.ISO 4437 consists of the following parts, under the general title Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) : Part 1: General Part 2: Pipes Part 3: Fittings Part 4: Valves Part 5: Fitness for purpose
19、 of the systemiv ISO 2014 All rights reservedBS ISO 4437-1:2014ISO 4437-1:2014(E)IntroductionThis part of ISO 4437 specifies the requirements for a piping system and its components made from polyethylene (PE), and which is intended to be used for the supply of gaseous fuels.Requirements and test met
20、hods for components of the piping system are specified in ISO 4437-2, ISO 4437-3, and ISO 4437-4.Characteristics for fitness for purpose of the system are covered in ISO 4437-5. Recommended practice for installation is given in ISO/TS 10839.1This part of ISO 4437 covers the general aspects of the pl
21、astics piping system. ISO 2014 All rights reserved vBS ISO 4437-1:2014BS ISO 4437-1:2014Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) Part 1: General1 ScopeThis part of ISO 4437 specifies the general properties of polyethylene (PE) compounds for the manufacture of pipes
22、 and fittings intended to be used for the supply of gaseous fuels.It also specifies the test parameters for the test methods referred to in this International Standard.In conjunction with ISO 4437-2, ISO 4437-3, ISO 4437-4, and ISO 4437-5, it is applicable to PE pipes, fittings and valves, their joi
23、nts, and joints with components of PE and other materials intended to be used under the following conditions:a) the maximum operating pressure (MOP), is based on the design stress determined from the compound minimum required strength (MRS) divided by the C factor, and taking into account rapid crac
24、k propagation (RCP) requirements;b) a temperature of 20 C as reference temperature for the design basis.NOTE 1 For other operating temperatures, guidance is given in ISO 4437-5:2014.NOTE 2 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, t
25、aking into account their particular requirements and any relevant national regulations and installation practices or codes.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references,
26、only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 472, Plastics VocabularyISO 1043-1, Plastics Symbols and abbreviated terms Part 1: Basic polymers and their special characteristicsISO 1133-1, Plastics Determi
27、nation of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics Part 1: Standard methodISO 1167-1, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 1: General methodISO 1167-2, Thermoplastic
28、s pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 2: Preparation of pipe test piecesISO 1183-1, Plastics Methods for determining the density of non-cellular plastics Part 1: Immersion method, liquid pyknometer method and titration
29、 methodISO 1183-2, Plastics Methods for determining the density of non-cellular plastics Part 2: Density gradient column methodINTERNATIONAL STANDARD ISO 4437-1:2014(E) ISO 2014 All rights reserved 1BS ISO 4437-1:2014ISO 4437-1:2014(E)ISO 4437-2:2014, Plastics piping systems for the supply of gaseou
30、s fuels Polyethylene (PE) Part 2: PipesISO 4437-3:2014, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 3: FittingsISO 4437-4:1), Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 4: ValvesISO 4437-5:2014, Plastics piping systems for the su
31、pply of gaseous fuels Polyethylene (PE) Part 5: Fitness for purpose of the systemISO 6259-1, Thermoplastics pipes Determination of tensile properties Part 1: General test methodISO 6259-3, Thermoplastics pipes Determination of tensile properties Part 3: Polyolefin pipesISO 6964, Polyolefin pipes and
32、 fittings Determination of carbon black content by calcination and pyrolysis Test method and basic specificationISO 9080, Plastics piping and ducting systems Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolationISO 11357-6, Plastics Differentia
33、l scanning calorimetry (DSC) Part 6: Determination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT)ISO 11413:2008, Plastics pipes and fittings Preparation of test piece assemblies between a polyethylene (PE) pipe and an electrofusion fittingISO 11414:200
34、9, Plastics pipes and fittings Preparation of polyethylene (PE) pipe/pipe or pipe/fitting test piece assemblies by butt fusionISO 12162, Thermoplastics materials for pipes and fittings for pressure applications Classification, designation and design coefficientISO 13477, Thermoplastics pipes for the
35、 conveyance of fluids Determination of resistance to rapid crack propagation (RCP) Small-scale steady-state test (S4 test)ISO 13478, Thermoplastics pipes for the conveyance of fluids Determination of resistance to rapid crack propagation (RCP) Full-scale test (FST)ISO 13479, Polyolefin pipes for the
36、 conveyance of fluids Determination of resistance to crack propagation Test method for slow crack growth on notched pipesISO 13953, Polyethylene (PE) pipes and fittings Determination of the tensile strength and failure mode of test pieces from a butt-fused jointISO 13954, Plastics pipes and fittings
37、 Peel decohesion test for polyethylene (PE) electrofusion assemblies of nominal outside diameter greater than or equal to 90 mmISO 15512, Plastics Determination of water contentISO 16871, Plastics piping and ducting systems Plastics pipes and fittings Method for exposure to direct (natural) weatheri
38、ngISO 18553, Method for the assessment of the degree of pigment or carbon black dispersion in polyolefin pipes, fittings and compoundsEN 12099, Plastics piping systems Polyethylene piping materials and components Determination of volatile content1) To be published. (Revision of ISO 10933:1997)2 ISO
39、2014 All rights reservedBS ISO 4437-1:2014ISO 4437-1:2014(E)3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 472 and ISO 1043-1 and the following apply.3.1 Geometrical definitions3.1.1nominal size DN/ODnumerical designation of the size of a component,
40、other than a component designated by thread size, which is a convenient round number approximately equal to the manufacturing dimension in millimetres (mm) and related to the outside diameter3.1.2nominal outside diameterdnspecified outside diameter, in millimetres, assigned to a nominal size DN/OD3.
41、1.3outside diameter at any pointdevalue of the measurement of the outside diameter through its cross-section at any point of the pipe, rounded to the next greater 0,1 mm3.1.4mean outside diameterdemvalue of the measurement of the outer circumference of the pipe or spigot end of a fitting in any cros
42、s-section divided by (= 3,142), rounded to the next greater 0,1 mm3.1.5minimum mean outside diameterdem,minminimum value for the mean outside diameter as specified for a given nominal size3.1.6maximum mean outside diameterdem,maxmaximum value for the mean outside diameter as specified for a given no
43、minal size3.1.7out-of-roundnessovalitydifference between the maximum and the minimum outside diameters in the same cross-section of a pipe or spigot3.1.8nominal wall thicknessennumerical designation of the wall thickness of a component, which is a convenient round number, approximately equal to the
44、manufacturing dimension in millimetres (mm)Note 1 to entry: For thermoplastics components conforming to the different parts of ISO 4437, the value of the nominal wall thickness, en, is identical to the specified minimum wall thickness at any point, emin. ISO 2014 All rights reserved 3BS ISO 4437-1:2
45、014ISO 4437-1:2014(E)3.1.9wall thickness at any pointewall thickness at any point around the circumference of a component rounded to the next greater 0,1 mmNote 1 to entry: The symbol for the wall thickness of the fittings and valves body at any point is E.3.1.10minimum wall thickness at any pointem
46、inminimum value for the wall thickness at any point around the circumference of a component, as specified3.1.11maximum wall thickness at any pointemaxmaximum value for the wall thickness at any point around the circumference of a component, as specified3.1.12mean wall thicknessemarithmetical mean of
47、 a number of measurements of the wall thickness, regularly spaced around the circumference and in the same cross-section of a component, including the measured minimum and the measured maximum values of the wall thickness in that cross-section3.1.13tolerancepermitted variation of the specified value
48、 of a quantity, expressed as the difference between the permitted maximum and the permitted minimum value3.1.14wall thickness tolerancetypermitted difference between the wall thickness at any point, e, and the nominal wall thickness, enNote 1 to entry: en e en+ ty3.1.15standard dimension ratioSDRnum
49、erical designation of a pipe series, which is a convenient round number, approximately equal to the dimension ratio of the nominal outside diameter, dn, and the nominal wall thickness, en3.1.16pipe seriesSdimensionless number for pipe designation conforming to ISO 40652Note 1 to entry: The relationship between the pipe series S and the standard dimension ratio (SDR) is given by the following equation as specified in ISO 4065.2S =SDR123.2 M
