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1、 Reference number ISO 16422:2006(E) ISO 2006 INTERNATIONAL STANDARD ISO 16422 First edition 2006-05-15 Pipes and joints made of oriented unplasticized poly(vinyl chloride) (PVC-O) for the conveyance of water under pressure Specifications Tubes et assemblages en poly(chlorure de vinyle) non plastifi
2、orient (PVC-O) pour le transport de leau sous pression Spcifications Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/12/2007 22:04:53 MDTNo reproduction or networking permitted without l
3、icense from IHS -,-,- ISO 16422:2006(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
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6、ariat at the address given below. ISO 2006 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 from either ISO at the addr
7、ess 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 2006 All rights reserved Copyright International Organization for
8、 Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/12/2007 22:04:53 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 16422:2006(E) ISO 2006 All rights reserved iii Contents Page Foreword. v Introducti
9、on. vi 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 2 4 Symbols and abbreviated terms . 4 4.1 Symbols. 4 4.2 Abbreviations 5 5 Material 5 5.1 General. 5 5.2 Rework material 6 6 Effect of materials on water quality 6 7 Material classification. 6 7.1 MRS value 6 7.2 Overall service (
10、design) coefficient 6 7.3 Design stress 6 8 Classification and selection of pipes 7 8.1 Classification. 7 8.2 Calculation of wall thickness. 7 8.3 Determination of the allowable operating pressure, PFA, for temperatures up to 45 C 8 8.4 Derating factor related to application of the system. 8 9 Gener
11、al requirements for pipes 10 9.1 Appearance . 10 9.2 Opacity. 10 10 Geometrical characteristics for pipes 10 10.1 Measurement. 10 10.2 Outside diameters and wall thicknesses 10 10.3 Pipes with integral sockets 10 10.4 Plain ends 11 11 Mechanical characteristics of pipes. 11 11.1 Resistance to hydros
12、tatic pressure 11 11.2 Resistance to external blows at 0 C 12 11.3 Ring stiffness 12 12 Physical characteristics Tensile strength . 12 13 Mechanical characteristics of assemblies, including joints 13 13.1 Assemblies with non-end-load-bearing joints. 13 13.2 Short-term pressure test for leaktightness
13、 of assemblies. 13 13.3 Short-term negative pressure test for leaktightness of assemblies . 14 13.4 Long-term pressure test for leaktightness. 15 13.5 End-load-bearing joints Pressure and bending test for leaktightness and strength 15 14 Elastomeric sealing rings 15 15 Marking 15 Annex A (normative)
14、 Establishment of the minimum required strength (MRS) 16 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/12/2007 22:04:53 MDTNo reproduction or networking permitted without license from
15、IHS -,-,- ISO 16422:2006(E) iv ISO 2006 All rights reserved Annex B (informative) Minimum depth of engagement of sockets .17 Annex C (normative) Temperature derating factor.20 Annex D (informative) Ring stiffness of pipes.21 Annex E (informative) Explanation of calculated pressures for long-term lea
16、k-tightness testing23 Bibliography .24 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/12/2007 22:04:53 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1642
17、2:2006(E) ISO 2006 All rights reserved v Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member b
18、ody 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 liaison with ISO, also take part in the work. ISO collaborates closely with the International Electro
19、technical 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 technical committees is to prepare International Standards. Draft International Standards adopted
20、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 drawn to the possibility that some of the elements of this document may be the subject of patent r
21、ights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 16422 was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for the transport of fluids, Subcommittee SC 2, Plastics pipes and fittings for water supplies. Copyright Internationa
22、l Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/12/2007 22:04:53 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 16422:2006(E) vi ISO 2006 All rights reserved Introduction Molecu
23、lar orientation of thermoplastics results in improvement of physical and mechanical properties. Orientation is carried out at temperatures well above the glass transition temperature. Orientation of PVC-U pipe-material can be induced by different processes. One is the off-line process, where the thi
24、ck-walled extruded tube is conditioned in a tubular mould at the desired temperature, and in which means are designed to activate the orientation process in the circumferential and axial directions. A second option is the in-line process, where the thick-walled tube, directly after the extrusion pro
25、cess, is conditioned in-line at the orientation temperature, and in which means are incorporated to activate the orientation process in the circumferential and axial directions. After the orientation process, the pipe is cooled down quickly to ambient temperature. The structure of this oriented pipe
26、 is stable up to the glass transition temperature ( 75 C), above which the material will have a rubber phase where the pipe will shrink back to its original dimensions after extrusion. The orientation of the molecules creates a laminar structure in the material of the pipe wall. This structure gives
27、 the ability to withstand brittle failure emanating from minor flaws in the material matrix or from scratches at the surface of the pipe wall. PVC-O can therefore be considered as highly resistant to notches and no testing is needed. Because of the morphology of oriented PVC-U pipe-material, there i
28、s no risk of long-line rapid crack propagation. Improved hoop strength and improved resistance to impact also result. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/12/2007 22:04:53 MDT
29、No reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 16422:2006(E) ISO 2006 All rights reserved 1 Pipes and joints made of oriented unplasticized poly(vinyl chloride) (PVC-O) for the conveyance of water under pressure Specifications 1 Scope This Internati
30、onal Standard specifies the general aspects of pipes and joints made of oriented unplasticized poly(vinyl chloride) (PVC-O), for piping systems intended to be used underground or above-ground where not exposed to direct sunlight, for water mains and services, pressurized sewer systems and irrigation
31、 systems. The piping system according to this International Standard is intended for the conveyance of cold water under pressure, for drinking water and for general purposes up to and including 45 C, and especially in those applications where special performance requirements are needed, such as impa
32、ct loads and pressure fluctuations, up to pressure ratings of 25 bars1). Joints constructed of other materials shall meet their own relevant standards in addition to the fitness-for- purpose requirements of this International Standard. 2 Normative references The following referenced documents are in
33、dispensable 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. ISO 3:1973, Preferred numbers Series of preferred numbers ISO 161-1, Thermoplastics pipes
34、for the conveyance of fluids Nominal outside diameters and nominal pressures Part 1: Metric series ISO 1167-1:2006, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 1: General method ISO 1628-2, Plastics Determinatio
35、n of the viscosity of polymers in dilute solution using capillary viscometers Part 2: Poly(vinyl chloride) resins ISO 2045, Single sockets for unplasticized poly(vinyl chloride) (PVC-U) and chlorinated poly(vinyl chloride) (PVC-C) pressure pipes with elastic sealing ring type joints Minimum depths o
36、f engagement ISO 2507-1, Thermoplastics pipes and fittings Vicat softening temperature Part 1: General test method ISO 2507-2, Thermoplastics pipes and fittings Vicat softening temperature Part 2: Test conditions for unplasticized poly(vinyl chloride) (PVC-U) or chlorinated poly(vinyl chloride) (PVC
37、-C) pipes and fittings and for high impact resistance poly(vinyl chloride) (PVC-HI) pipes ISO 2531, Ductile iron pipes, fittings, accessories and their joints for water or gas applications 1) 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2 Copyright International Organization for Standardization Provided
38、by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/12/2007 22:04:53 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 16422:2006(E) 2 ISO 2006 All rights reserved ISO 3126, Plastics piping systems Plastics components Determinat
39、ion of dimensions ISO 3127, Thermoplastics pipes Determination of resistance to external blows Round-the-clock method ISO 4065, Thermoplastics pipes Universal wall thickness table ISO 4422-2:1996, Pipes and fittings made of unplasticized poly(vinyl chloride) (PVC-U) for water supply Specifications P
40、art 2: Pipes (with or without integral sockets) ISO 4633, Rubber seals Joint rings for water supply, drainage and sewerage pipelines Specification for materials ISO 6259-2:1997, Thermoplastics pipes Determination of tensile properties Part 2: Pipes made of unplasticized poly(vinyl chloride) (PVC-U),
41、 chlorinated poly(vinyl chloride) (PVC-C) and high-impact poly(vinyl chloride) (PVC-HI) ISO 7686, Plastics pipes and fittings Determination of opacity ISO 9080:2003, Plastics piping and ducting systems Determination of the long-term hydrostatic strength of thermoplastics materials in pipe form by ex
42、trapolation ISO 9969, Thermoplastics pipes Determination of ring stiffness ISO 11922-1:1997, Thermoplastics pipes for the conveyance of fluids Dimensions and tolerances Part 1: Metric series ISO 12162, Thermoplastics materials for pipes and fittings for pressure applications Classification and desig
43、nation Overall service (design) coefficient ISO 13783, Plastics piping systems Unplasticized poly(vinyl chloride) (PVC-U) end-load-bearing double- socket joints Test method for leaktightness and strength while subjected to bending and internal pressure ISO 13844, Plastics piping systems Elastomeric-
44、sealing-ring-type socket joints of unplasticized poly(vinyl chloride) (PVC-U) for use with PVC-U pipes Test method for leaktightness under negative pressure ISO 13845, Plastics piping systems Elastomeric-sealing-ring-type socket joints for use with unplasticized poly(vinyl chloride) (PVC-U) pipes Te
45、st method for leaktightness under internal pressure and with angular deflection ISO 13846, Plastics piping systems End-load-bearing and non-end-load-bearing assemblies and joints for thermoplastics pressure piping Test method for long-term leaktightness under internal water pressure 3 Terms and defi
46、nitions For the purposes of this document, the following terms and definitions apply 3.1 nominal outside diameter dn numerical designation of size which is common to all components in a thermoplastics piping system other than flanges and components designated by thread size NOTE 1 It is a convenient
47、 round number for reference purposes. NOTE 2 For pipe conforming to ISO 161-1, the nominal outside diameter, expressed in millimetres, is the minimum mean outside diameter dem, min. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technica
48、l Standards 1/9972545001 Not for Resale, 04/12/2007 22:04:53 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 16422:2006(E) ISO 2006 All rights reserved 3 3.2 nominal wall thickness en specified wall thickness, in millimetres NOTE It is identical to the specified minimum wall thickness at any point ey, min. 3.3 nominal pressure PN alphanumeric designation related to the mechanic