ISO 4427-2-2007 Plastics piping systems - Polyethylene (PE) pipes and fittings for water supply - Part 2 Pipes《塑料管道系统 给水用聚乙烯(PE)管和管件 第2部分 管》.pdf
《ISO 4427-2-2007 Plastics piping systems - Polyethylene (PE) pipes and fittings for water supply - Part 2 Pipes《塑料管道系统 给水用聚乙烯(PE)管和管件 第2部分 管》.pdf》由会员分享,可在线阅读,更多相关《ISO 4427-2-2007 Plastics piping systems - Polyethylene (PE) pipes and fittings for water supply - Part 2 Pipes《塑料管道系统 给水用聚乙烯(PE)管和管件 第2部分 管》.pdf(26页珍藏版)》请在麦多课文档分享上搜索。
1、 Reference number ISO 4427-2:2007(E) ISO 2007INTERNATIONAL STANDARD ISO 4427-2 First edition 2007-08-01 Plastics piping systems Polyethylene (PE) pipes and fittings for water supply Part 2: Pipes Systmes de canalisations en plastique Tubes et raccords en polythylne (PE) destins lalimentation en eau
2、Partie 2: Tubes ISO 4427-2:2007(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the
3、editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can
4、 be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat
5、 at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2007 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing fro
6、m either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2007 All rights reservedISO 4427-2:2007(E
7、) ISO 2007 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 2 3 Terms, definitions, symbols and abbreviated terms. 2 4 Material 3 4.1 Compound . 3 4.2 Identification compound 3 5 General characteristics 3 5.1 Appearance . 3 5.2 Colour 3 5.3 Effect
8、 on water quality 3 6 Geometrical characteristics. 3 6.1 Measurements. 3 6.2 Mean outside diameter and out-of-roundness (ovality) 3 6.3 Wall thicknesses and their tolerances 5 6.4 Coiled pipe. 10 6.5 Lengths 10 7 Mechanical characteristics 10 7.1 Conditioning 10 7.2 Requirements 10 7.3 Retest in cas
9、e of failure at 80 C . 12 8 Physical characteristics. 12 8.1 Conditioning 12 8.2 Requirements 12 9 Chemical characteristics of pipes in contact with chemicals 14 10 Performance requirements 14 11 Marking 14 11.1 General. 14 11.2 Minimum required marking of pipes. 14 Annex A (normative) Layered pipes
10、. 15 Annex B (informative) Relationship between PN, MRS, S and SDR . 17 Bibliography . 18 ISO 4427-2:2007(E) iv ISO 2007 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of prepar
11、ing 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 committee. International organizations, governmental and non-governmental, in li
12、aison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of
13、 technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is
14、 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. ISO 4427-2 was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for the transport
15、of fluids, Subcommittee SC 2, Plastics pipes and fittings for water supplies. This first edition, together with ISO 4427-1, cancels and replaces ISO 4427:1996, of which it constitutes a technical revision. ISO 4427 consists of the following parts, under the general title Plastics piping systems Poly
16、ethylene (PE) pipes and fittings for water supply: Part 1: General Part 2: Pipes Part 3: Fittings Part 5: Fitness for purpose of the system ISO 4427-2:2007(E) ISO 2007 All rights reserved v Introduction ISO 4427, the system standard, specifies the requirements for a piping system and its components
17、when made from polyethylene (PE). The piping system is intended to be used for water supply intended for human consumption, including the conveyance of raw water prior to treatment and that of water for general purposes. In respect of potential adverse effects on the quality of water intended for hu
18、man consumption caused by the products covered by ISO 4427: a) ISO 4427 provides no information as to whether the products may be used without restriction; b) existing national regulations concerning the use and/or the characteristics of these products are in force. NOTE Guidance for assessment of c
19、onformity can be found in Bibliographical references 5 and 6. INTERNATIONAL STANDARD ISO 4427-2:2007(E) ISO 2007 All rights reserved 1 Plastics piping systems Polyethylene (PE) pipes and fittings for water supply Part 2: Pipes 1 Scope This part of ISO 4427 specifies the pipes made from polyethylene
20、(PE) intended for the conveyance of water for human consumption, including raw water prior to treatment and water for general purposes. It also specifies the test parameters for the test methods to which it refers. In conjunction with the other parts of ISO 4427, it is applicable to PE pipes, their
21、joints, to joints with components of PE and to mechanical joints with components of other materials, intended to be used under the following conditions: a) a maximum operating pressure (MOP) up to and including 25 bar 1) ; b) an operating temperature of 20 C as the reference temperature. NOTE 1 For
22、applications operating at constant temperatures greater than 20 C and up to 40 C, see ISO 4427-1:2007, Annex A. NOTE 2 ISO 4427 covers a range of maximum operating pressures and gives requirements concerning colours and additives. It is the responsibility of the purchaser or specifier to make the ap
23、propriate selections from these aspects, taking into account their particular requirements and any relevant national guidance or regulations and installation practices or codes. Three types of pipe are specified: PE pipes (outside diameter d n ), including any identification stripes; PE pipes with c
24、o-extruded layers on either or both the outside and/or inside of the pipe (total outside diameter d n ), as specified in Annex A, where all layers have the same MRS rating. PE pipes (outside diameter d n ) having a peelable, contiguous, thermoplastics additional layer on the outside of the pipe (“co
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- ISO442722007PLASTICSPIPINGSYSTEMSPOLYETHYLENEPEPIPESANDFITTINGSFORWATERSUPPLYPART2PIPES 塑料管道 系统 给水 聚乙烯

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