1、BSI Standards PublicationBS ISO 16132:2016Ductile iron pipes and fittings Seal coats for cement mortarliningsBS ISO 16132:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 16132:2016. It supersedes BS ISO 16132:2004 which is withdrawn. The UK participation i
2、n its preparation was entrusted to Technical Committee PSE/10, Iron pipes and fittings.A list of 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
3、its correct application. The British Standards Institution 2016. Published by BSI Standards Limited 2016ISBN 978 0 580 90826 2 ICS 23.040.10; 77.140.75 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Stan
4、dards Policy and Strategy Committee on 30 April 2016.Amendments/corrigenda issued since publicationDate Text affectedBS ISO 16132:2016 ISO 2016Ductile iron pipes and fittings Seal coats for cement mortar liningsTuyaux et raccords en fonte ductile Seal coats pour les revtements de mortier de cimentIN
5、TERNATIONAL STANDARDISO16132Second edition2016-05-01Reference numberISO 16132:2016(E)BS ISO 16132:2016ISO 16132:2016(E)ii ISO 2016 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be rep
6、roduced or utilized otherwise in any form or by any 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 request
7、er.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 16132:2016ISO 16132:2016(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Performance test require
8、ments . 24.1 Short-term sealing efficiency 24.2 Long-term sealing efficiency . 24.3 Cyclic pressure 25 Routine test requirements . 35.1 General . 35.2 Visual appearance 35.3 Coating thickness 35.4 Adhesion . 36 Marking 3Annex A (normative) Short-term sealing efficiency . 4Annex B (normative) Long-te
9、rm sealing efficiency . 6Annex C (normative) Cyclic pressure test .10Annex D (normative) Coating thickness measurement using test film .12Annex E (normative) Adhesion test 14Bibliography .16 ISO 2016 All rights reserved iiiContents PageBS ISO 16132:2016ISO 16132:2016(E)ForewordISO (the International
10、 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 body interested in a subject for which a technical committee has been est
11、ablished 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 Electrotechnical Commission (IEC) on all matters of electrotechnical standardiz
12、ation.The procedures used to develop this document 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 wi
13、th the editorial rules of the ISO/IEC Directives, 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
14、 patent rights identified during the development 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
15、.For an explanation on the meaning of ISO specific 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 f
16、or this document is ISO/TC 5, Ferrous metal pipes and metallic fittings, Subcommittee SC 2, Cast iron pipes, fittings and their joints.This second edition cancels and replaces the first edition (ISO 16132:2004), of which it constitutes a minor revision.iv ISO 2016 All rights reservedBS ISO 16132:201
17、6ISO 16132:2016(E)IntroductionThe intended purpose of a seal coat is to reduce the contact between a cement mortar lining and the contents of a water main, thereby restricting the leaching of inorganic materials into the water supply.Seal coats are usually specified where the pipeline is to convey s
18、oft waters and/or where residence times are very long. Supply water quality data for such pipelines should be discussed between the prospective client and the seal coated pipe supplier to ensure the suitability of the product for use.Attention is drawn to the fact that seal coated cement mortar line
19、d surfaces in contact with, or likely to come into contact with, potable water need to conform to the requirements of national or international water supply or water quality regulations. Approval may be required for the individual components of the system, or for the combined system, depending upon
20、the requirements of those national or international water supply or water quality regulations when used in accordance with the product manufacturers instructions for use, and under any other appropriate conditions defined for that product within any published list of substances, products and process
21、es approved to those water supply or water quality regulations. ISO 2016 All rights reserved vBS ISO 16132:2016BS ISO 16132:2016Ductile iron pipes and fittings Seal coats for cement mortar linings1 ScopeThis International Standard specifies the requirements for seal coatings for factory application
22、to the surfaces of cement mortar linings, which are factory applied to the interior of ductile iron pipes and fittings.It provides the performance requirements for short-term sealing efficiency, long-term durability and cyclic pressure, as well as the routine testing requirements for visual appearan
23、ce, coating thickness and adhesion.This International Standard is applicable to products for potable and other water applications.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated refer
24、ences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 2439, Flexible cellular polymeric materials Determination of hardness (indentation technique)ISO 2808, Paints and varnishes Determination of film thickn
25、essISO 10523, Water quality Determination of pHASTM D 3330, Standard Test Method for Peel Adhesion of Pressure-Sensitive Tape3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1ductile irontype of cast iron used for pipes, fittings and accessories i
26、n which graphite is present primarily in spheroidal form3.2fittingcasting other than a pipe, which allows pipeline deviation or change of direction or boreNote 1 to entry: Flanged sockets, flanged spigots and collars are also classified as fittings.3.3test filmfilm of consistent thickness and densit
27、y, morphologically stable at the temperature of the substrate during seal coat application, used as a surrogate surface for the measurement of coating thicknesses3.4pipecasting of uniform bore, with straight axis, having either socket, spigot or flanged endsNote 1 to entry: This does not apply to fl
28、anged sockets or flanged spigots and collars, which are classified as fittings.INTERNATIONAL STANDARD ISO 16132:2016(E) ISO 2016 All rights reserved 1BS ISO 16132:2016ISO 16132:2016(E)3.5productseal coated, cement mortar lined iron pipe or fitting3.6seal coatcoating applied over a cement mortar lini
29、ng to control the interactions between the lining and the contents of the conduit3.7performance testproof of design test, done once and repeated only after a relevant change of material or supplier of the seal coat or lining, or relevant change in process design4 Performance test requirements4.1 Sho
30、rt-term sealing efficiencyWhen tested in accordance with Annex A, the pH of the test water shall not exceed 9,5.By agreement between the manufacturer of the product and the customer, other performance tests with other exposure periods, test waters and/or limits of pH value may be undertaken to suit
31、particular national or customer requirements.4.2 Long-term sealing efficiencyWhen tested in accordance with Annex B, the pH of the test water shall not exceed 9,5 for each of the test samples.By agreement between the manufacturer of the product and the customer, other performance tests with other ex
32、posure periods, test waters and/or limits of pH value may be undertaken to suit particular national or customer requirements.Note that if the seal coat has been documented by the manufacturer to a National Standard and successfully used for a minimum of 5 years, the performance of the type test in a
33、ccordance with Annex B is only required for significant changes in the coating material, type or formulation which could adversely affect the performance of the seal coat.4.3 Cyclic pressureWhen tested in accordance with Annex C, visual inspection shall display no peeling of the seal coat or crackin
34、g with a width in excess of 0,8 mm. It is permissible to have some precipitation of white alkaline deposit.At the conclusion of the visual inspection, the pipe samples shall immediately be tested for sealing efficiency in accordance with Annex A. When tested in accordance with Annex A, the pH of the
35、 test water shall not exceed 9,5 in either of the pipe samples.Note that if the seal coat has been tested and successfully used for a minimum of 10 years, the performance of the type test in accordance with Annex C is only required for significant changes in the coating material, type, or formulatio
36、n which could adversely affect the performance of the seal coat.2 ISO 2016 All rights reservedBS ISO 16132:2016ISO 16132:2016(E)5 Routine test requirements5.1 GeneralCoating and re-work procedures (e.g. drying regimes for solvent-based coatings and mixing and curing regimes for multi-component mater
37、ials) shall be defined by the manufacturer of the product in agreement with the seal coat supplier, if necessary, so as to enable the product to conform to the requirements of this International Standard.The tests specified in 5.2 to 5.4 shall be carried out on factory seal coated pipes or fittings
38、as opposed to separately prepared samples.Sampling plans for the tests specified in 5.2 to 5.4, specific to the seal coating material used, the size of the batch and the storage conditions, shall be specified by the manufacturer of the product for each batch of product.Where a non-conforming product
39、 is identified, the product shall either be re-worked, so that it meets the requirements of this International Standard, or be rejected.5.2 Visual appearanceWhen examined visually, the seal coat shall be free from any coating irregularities likely to be detrimental to the performance of the seal coa
40、t (as required by the performance tests in this International Standard). The manufacturer shall define those coating irregularities (e.g. hairline cracks or pinholes) which are considered not to be detrimental to the performance of the seal coat (as required by the performance tests in this Internat
41、ional Standard), taking into account the nature of the seal coat material.5.3 Coating thicknessWhen tested in accordance with Annex D or any appropriate method defined in ISO 2808, the wet or dry coating thickness shall be within the limits specified by the manufacturer of the product in conjunction
42、 with the seal coat supplier, if necessary.5.4 AdhesionWhen tested in accordance with Annex E, one of the following requirements shall be met: where a cross cut is made in the seal coat, the adhesive strength shall fall within the range of 1 to 3; where no cross cut is used, the area of disbonded co
43、ating shall be less than 10 % of the test area.Any area damaged during testing shall be repaired in accordance with a procedure defined by the manufacturer of the product in agreement with the seal coat supplier.6 MarkingEach seal coated pipe or fitting shall be identified with the pipe manufacturer
44、s name or mark.In addition, seal coated pipes shall be indelibly and legibly marked on the external surface with the number and year of this International Standard.Where pipes are bundled, the required markings may be applied to the bundle rather than to individual pipes. ISO 2016 All rights reserve
45、d 3BS ISO 16132:2016ISO 16132:2016(E)Annex A (normative) Short-term sealing efficiencyA.1 PrincipleThe initial or short-term sealing efficiency of a seal coat applied to a cement mortar lined surface that is exposed to a given test water is determined by measuring the pH of test water after three su
46、ccessive 24 h periods of exposure within a seal coated pipe sample.A.2 Materials and apparatusA.2.1 Paraffin wax, solventless epoxy, silicone resin, or other suitable sealing material that does not affect the pH of the water.A.2.2 Test water, having a bicarbonate alkalinity of approximately 26 mg/l
47、as CaCO3, at equilibrium with the atmosphere (i.e. no artificially induced carbon dioxide level), and with a stable pH of 8,0 0,1.A.2.3 Petroleum jelly.This water shall be produced by dissolving (0,027 8 0,000 5) g of CaCl2(calcium chloride) and (0,042 8 0,000 5) g of NaHCO3(sodium bicarbonate) in 1
48、 l of distilled water.A.3 ApparatusA.3.1 Clear glass or plastic plate.A.3.2 pH meter, having capacity to measure pH 0 to pH 14, with discrimination of a pH of 0,01 or better.A.4 Preparation of test samplesThe test shall be carried out using a DN 150 seal coated and cement mortar lined pipe, 500 mm i
49、n nominal length, with a double spigot. The sample(s) shall be cut from pipe taken from normal production. Ensure any bare exposed cement mortar at pipe ends (resulting from cutting the pipe) has the seal coat applied.A.5 ProcedureA.5.1 Seal the pipe at its lower end in a shallow pan of molten paraffin wax, or with a solventless epoxy, silicone resin or other suitable sealing material (A.2.1). Allow the material to harden/cure.A.5.2 Fill the pipe to the brim with test water (A.2.2) at ambient temperature.A.5.3 Cover the top of the pipe
