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1、AS/NZS 4765:2007 Australian/New Zealand Standard Modified PVC (PVC-M) pipes for pressure applications AS/NZS 4765:2007 Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 27 Jun 2008 AS/NZS 4765:2007 This Joint Australian/New Zealand Standard was prepared by Joint Technical Committee PL-021, PVC, ABS and P
2、olyamide Pipe Systems. It was approved on behalf of the Council of Standards Australia on 29 June 2007 and on behalf of the Council of Standards New Zealand on 27 July 2007. This Standard was published on 20 September 2007. The following are represented on Committee PL-021: Australian Chamber of Com
3、merce and Industry Certification Interests (Australia) CSIRO Manufacturing and Infrastructure Technology Energy Networks Association Engineers Australia New Zealand Local Government Master Plumbers, Gasfitters and Drainlayers New Zealand New Zealand Water and Waste Association Plastics Industry Pipe
4、 Association of Australia Plastics New Zealand Water Services Association of Australia Keeping Standards up-to-date Standards are living documents which reflect progress in science, technology and systems. To maintain their currency, all Standards are periodically reviewed, and new editions are publ
5、ished. Between editions, amendments may be issued. Standards may also be withdrawn. It is important that readers assure themselves they are using a current Standard, which should include any amendments which may have been published since the Standard was purchased. Detailed information about joint A
6、ustralian/New Zealand Standards can be found by visiting the Standards Web Shop at .au or Standards New Zealand web site at www.standards.co.nz and looking up the relevant Standard in the on-line catalogue. Alternatively, both organizations publish an annual printed Catalogue with full details of al
7、l current Standards. For more frequent listings or notification of revisions, amendments and withdrawals, Standards Australia and Standards New Zealand offer a number of update options. For information about these services, users should contact their respective national Standards organization. We al
8、so welcome suggestions for improvement in our Standards, and especially encourage readers to notify us immediately of any apparent inaccuracies or ambiguities. Please address your comments to the Chief Executive of either Standards Australia or Standards New Zealand at the address shown on the back
9、cover. This Standard was issued in draft form for comment as DR 06616. Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 27 Jun 2008 AS/NZS 4765:2007 Australian/New Zealand Standard Modified PVC (PVC-M) pipes for pressure applications COPYRIGHT Standards Australia/Standards New Zealand All rights are res
10、erved. No part of this work may be reproduced or copied in any form or by any means, electronic or mechanical, including photocopying, without the written permission of the publisher. Jointly published by Standards Australia, GPO Box 476, Sydney, NSW 2001 and Standards New Zealand, Private Bag 2439,
11、 Wellington 6020 ISBN 0 7337 8383 X Originated as AS/NZS 4765(Int):2000. This edition 2007. Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 27 Jun 2008 AS/NZS 4765:2007 2 PREFACE This Australian/New Zealand Standard was prepared by Committee PL-021, PVC, ABS and Polyamide Pipe Systems, to supersede AS/
12、NZS 4765 (Int):2000. The objective of this Standard is to outline minimum requirements for the manufacture and performance of PVC-M pipes for pressure applications for use by manufacturers, specifiers and purchasers of these products. The objective of this revision is to update and replace the Inter
13、im Standard with a full Australian/New Zealand Standard. This Standard is intended to apply to PVC-M pipes that exhibit an enhanced level of toughness and ductility as a consequence of the addition of impact modifiers and provides a consistent means of assessment of quality and performance, together
14、 with a common design criterion. A comprehensive series of tests are given with the intention of ensuring PVC-M pipe has a combination of high strength and ductility over a wide range of service conditions. In the preparation of this Standard, consideration has been given to international best pract
15、ice. The test criteria specified apply to pipes at the time of manufacture. Pipes or fittings that have been in service might not meet the same performance requirements. The terms normative and informative have been used in this Standard to define the application of the appendix to which they apply.
16、 A normative appendix is an integral part of a Standard, whereas an informative appendix is only for information and guidance. Statements expressed in mandatory terms in notes to tables and figures are deemed to be requirements of this Standard. Notes to text are for information and guidance only. A
17、ccessed by UNIVERSITY OF SOUTH AUSTRALIA on 27 Jun 2008 3 AS/NZS 4765:2007 CONTENTS Page FOREWORD5 SECTION 1 SCOPE AND GENERAL 1.1 SCOPE 6 1.2 MEANS FOR DEMONSTRATING COMPLIANCE6 1.3 REFERENCED DOCUMENTS 6 1.4 DEFINITIONS 7 1.5 NOTATION 8 1.6 CLASSIFICATION.9 SECTION 2 GENERAL REQUIREMENTS 2.1 SCOPE
18、 10 2.2 COMPOSITION 10 2.3 DIMENSIONS. 10 2.4 COLOUR. 10 2.5 EFFECT ON WATER. 11 2.6 FREEDOM FROM DEFECTS 11 2.7 SOLVENT CEMENTS 11 2.8 ELASTOMERIC JOINTING SEALS 11 2.9 WITNESS MARK. 11 SECTION 3 PERFORMANCE REQUIREMENTS 3.1 SCOPE OF SECTION 12 3.2 TESTS ON PIPES . 12 3.3 TESTS ON ELASTOMERIC SEAL
19、JOINTS 13 SECTION 4 PIPES 4.1 SCOPE OF SECTION 16 4.2 DIAMETER AND WALL THICKNESS. 16 4.3 LENGTH. 16 4.4 PIPE SPIGOT ENDS. 17 4.5 SOCKETS FORMED ON PIPES 17 4.6 MARKING 17 4.7 PACKAGING, STORAGE AND TRANSPORTATION. 18 SECTION 5 ELASTOMERIC SEAL JOINTS 5.1 SCOPE OF SECTION. 22 5.2 JOINT DESIGN 22 5.3
20、 DEPTH OF ENGAGEMENT 22 5.4 SOCKET DEPTH 22 SECTION 6 POST-FORMED BENDS AND COUPLINGS 6.1 SCOPE OF SECTION AND GENERAL. 23 6.2 SOCKETS. 23 6.3 BEND RADIUS. 23 6.4 SPIGOT LENGTHS 23 6.5 BEND ANGLE 23 6.6 MARKING 23 Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 27 Jun 2008 AS/NZS 4765:2007 4 APPENDICES
21、 A MEANS FOR DEMONSTRATING COMPLIANCE WITH THIS STANDARD. 24 B METHOD FOR DETERMINATION OF CRING TOUGHNESS . 29 C METHOD FOR THE DETERMINATION OF HIGH VELOCITY IMPACT FRACTURE MODE 32 D METHOD FOR THE DETERMINATION OF LONG-TERM TOUGHNESS 35 E METHOD FOR DETERMINING THE RESISTANCE OF NOTCHED PIPE TO
22、INTERNAL PRESSURE. 38 F WALL THICKNESS DESIGN FOR PIPES FOR SPECIAL APPLICATIONS 40 Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 27 Jun 2008 5 AS/NZS 4765:2007 FOREWORD This Australian/New Zealand Standard defines the requirements for modified PVC (PVC-M) pipes. The Standard covers two ranges of pip
23、e sizes, Series 1 and Series 2. Series 1 pipes are a metric pipe size and Series 2 pipes have dimensions that are compatible with cast iron pressure pipes and fittings. The out-of-roundness tolerance on the outside diameters is applicable to pressure classes PN 12 and above. No such tolerance is pla
24、ced on Classes PN 9 and below because the thinner walled pipes may be easily re-rounded when inserted into sockets. The wall thickness of pipes designed in accordance with this Standard have been calculated using the Barlow equation with a hydrostatic design stress of 17.5 MPa. In the interest of se
25、rviceability and irrespective of the calculated minimum wall thickness, this Standard does not provide for a wall thickness of less than 2.5 mm. Also in the interests of serviceability, the maximum SDR has been restricted to 47 irrespective of the wall thickness calculated by the hydrostatic design
26、stress of 17.5 MPa. Calculation of the minimum wall thickness is as follows: Tmin. = PDm min./(2S+P) where Tmin. = minimum wall thickness, in millimetres P = maximum allowable operating pressure, in megapascals Dm min. = minimum outside diameter of the pipe, in millimetres S = hydrostatic design str
27、ess of the material, in megapascals, at 20C. Conformance with the MRS requirement is determined from the 20C stress regression curve developed from testing of multiple specimens and analysing the results according to AS/NZS 1462.29, Methods for plastics pipes and fittings, Method 29: Plastics piping
28、 and ducting systemsDetermination of the long-term hydrostatic strength of thermoplastics materials in pipe form by extrapolation (ISO 9080:2003, MOD). The analysis adopts the 50 years extrapolation point on the regression curve as the reference for design purposes. This is consistent with long stan
29、ding international practice. It should not be taken that either (a)the pipes weaken with time; or (b)the predicted life is 50 years. Actual system life is dependent on manufacture, transport, handling, installation, operation, protection from third party damage and other external factors. For water
30、supply applications, the actual life can be expected to be in excess of 100 years before major rehabilitation is required. Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 27 Jun 2008 AS/NZS 4765:2007 6 COPYRIGHT STANDARDS AUSTRALIA/STANDARDS NEW ZEALAND Australian/New Zealand Standard Modified PVC (PVC
31、-M) pipes for pressure applications S E C T I O N 1 S C O P E A N D G E N E R A L 1.1 SCOPE This Standard specifies requirements for pipes, integral joints and post-formed bends of PVC-M for the conveyance of water and wastewater under pressure. The pipes are intended for installation below ground,
32、and above ground where they are not exposed to direct sunlight. NOTES: 1Relevant installation requirements for pipe systems, including PVC-M pressure pipes manufactured to this Standard and the associated fittings are covered by AS/NZS 2032, AS/NZS 2566.2 and the AS/NZS 3500 series, as applicable. 2
33、If it is intended to use pipes complying with this Standard for the conveyance of fluids other than water, the manufacturer should be consulted. 3Two series of pipes are specified (see the Foreword in this Standard). 1.2 MEANS FOR DEMONSTRATING COMPLIANCE Compliance with this Standard shall be demon
34、strated in accordance with Appendix A. 1.3 REFERENCED DOCUMENTS The following documents are referred to in this Standard. AS 1199 Sampling procedures for inspection by attributes 1199.1 Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot- by-lot inspection AS/NZS 1462 Methods
35、of test for plastics pipes and fittings 1462.1 Method 1: Method for determining the dimensions of pipes and fittings 1462.4 Method 4: Method of determining reversion of UPVC pipes 1462.5 Method 5: Vicat softening temperature 1462.6 Method 6: Method for hydrostatic pressure testing of pipes 1462.15 M
36、ethod 15: Method for determination of vinyl chloride monomer content 1462.16 Method 16: Method for high temperature testing of pipe 1462.29 Method 29: Plastics piping and ducting systemsDetermination of the long- term hydrostatic strength of thermoplastics materials in pipe form by extrapolation (IS
37、O 9080:2003, MOD) 1646 Elastomeric seals for waterworks purposes 1646.1 Part 1: General requirements 1646.2 Part 2: Material requirements for pipe joint seals used in water and wastewater applicationsSpecifies by prescription formulation 1646.3 Part 3: Material requirements for pipe joint seals used
38、 in water and wastewater applications with the exception of natural and polyisoprene compounds Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 27 Jun 2008 7 AS/NZS 4765:2007 COPYRIGHT AS/NZS 2032 Installation of PVC pipe systems 2566 Buried flexible pipelines 2566.2 Part 2: Installation 3500 Plumbing a
39、nd drainage (all parts) 3879 Solvent cements and priming fluids for PVC (PVC-U and PVC-M) and ABS pipes and fittings 4020 Testing of products for use in contact with drinking water ISO 4422 Pipes and fittings made of unplasticized poly(vinyl chloride) (PVC-U) for water supplySpecifications 13783 Pla
40、stics piping systemsUnplasticized poly(vinyl chloride) (PVC-U) end-load- bearing double-socket jointsTest method for leaktightness and strength while subjected to bending and internal pressure 13844 Plastics piping systemsElastomeric-sealing-ring-type socket joints of unplasticized poly(vinyl chlori
41、de) (PVC-U) for use with PVC-U pipesTest method for leaktightness under negative pressure 13845 Plastics piping systemsElastomeric-sealing-ring-type socket joints for use with unplasticized poly(vinyl chloride) (PVC-U) pipesTest method for leaktightness under internal pressure and with angular defle
42、ction 13846 Plastics piping systemsEnd-load-bearing assemblies and joints for thermoplastics pressureTest method for long-term leaktightness under internal water pressure SA/SANZ HB18 Conformity assessment HB18.28 Guide 28: Guidance on third-party certification scheme for products 1.4 DEFINITIONS Fo
43、r the purposes of this Standard, the definitions below apply. 1.4.1 Ductile mode The type of failure of the material where macroscopic plastic deformation occurs. In the case of a fractured surface, stress whitening is visible to the naked eye (normal or corrected vision). 1.4.2 Elevated temperature
44、 Any temperature above 20C. 1.4.3 Hoop stress The stress in a pipe under pressure acting tangentially to the perimeter of a transverse section. 1.4.4 Hydrostatic design stress The hoop stress due to internal hydrostatic pressure that can be continuously applied at a specified temperature. It is deri
45、ved by the application of a design factor to the minimum required stress at 50 y. Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 27 Jun 2008 AS/NZS 4765:2007 8 COPYRIGHT 1.4.5 Lower confidence limit of the predicted hydrostatic strength (LPL) A stress that represents the 97.5% lower confidence limit o
46、f the predicted hydrostatic strength at 50 y. 1.4.6 Maximum allowable operating pressure (MAOP) The maximum pressure that can be sustained, with a design factor, by the class of pipe for its estimated useful life under the anticipated operating conditions. 1.4.7 Out-of-roundness The difference betwe
47、en the measured maximum outside diameter and the measured minimum outside diameter in the same cross-section of the pipe. 1.4.8 Nominal pressure (PN) The maximum allowable operating pressure (MAOP) at 20C designated in bar, but also referenced in megapascals i.e., PN/10 = MPa (see Clause 1.6). 1.4.9
48、 Post-formed bend A bend produced from pipe conforming to this specification. 1.4.10 Standard dimension ratio (SDR) A nominal ratio of the pipe outside diameter to its wall thickness. 1.5 NOTATION The following symbols are used in this Standard: = chamfer angle Di = socket mouth, mean inside diamete
49、r, in millimetres Dr = socket root, mean inside diameter, in millimetres Dm = mean outside diameter, in millimetres DN = nominal size, in millimetres f = test pressure factor (see Clause 3.3.1.2) l = chamfer length, in millimetres L = socket length, in millimetres m = minimum depth of engagement, in millimetres T = pipe wall thickness, in millimetres P = maximum allowable operating pressure, in megapascals (see Clause 1.4.6) PN = nominal pressure (see Clauses 1.4.8 and 1.6) pT = test pressure (see Clause 3.3.1.2) S =
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