iso 4422-1~4-1996 给水用硬聚氯乙烯(pvc-u)管材和管件(系列标准)

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1、INTERNATIONALIS0STANDARD4422-IFirstedition1996-12-l5Pipesandfittingsmadeofunplasticizedpoly(vinylchloride)(PVC-U)forwaterSUPPlY-Specifications-Part1:GeneralTubesetraccordsenpoiylchloruredevinylejnonplastifiktPVC-U)pourI’adductiond’eau-Spkcifications-Partie7:GBn&alit&ThismaterialisreproducedfromIS0d

2、ocumentsunderInternationalOrganizationforStandardization(ISO)CopyrightLicensenumberIHS/ICC/1996.Notforresale.NopartoftheseIS0documentsmaybereproducedinanyform,electronicretrievalsystemorotherwise,exceptasallowedinthecopyrightlawofthecountryofuse,orwiththepriorwrittenconsentofIS0(Casepostale56,1211G

3、eneva20,Switzerland,Fax941227341079),IHSortheIS0LicensoPsmembers.ReferencenumberIS04422-l:I996(E)IS04422-1:1996(E)ForewordIS0(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(IS0memberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutt

4、hroughIS0technicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,inliaisonwithISO,alsotakepartinthework.IS0collaboratescloselywiththeInternationalElectrote

5、chnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirculatedtothememberbodiesforvoting.PublicationasanInternationalStandardrequiresapprovalbyatleast75%ofthememberbodiescastingavote.InternationalStandardIS04422-lwasprepar

6、edbyTechnicalCommitteelSO/TC138,Plasticspipes,fittingsandvalvesforthetransportoffluids,SubcommitteeSC2,Plasticspipesandfittingsforwatersupplies.Togetherwiththeotherparts,thispartofIS04422cancelsandreplacesIS04422:1990,whichhasbeentechnicallyrevised.IS04422consistsofthefollowingparts,underthegeneral

7、titlePipesandfittingsmadeofunplasticizedpoly(vinylchloride)(PVC-U)forwatersupply-Specifications:-Part7:General-Part2:Pipes(withorwithoutintegralsockets)-Part3:Fittingsandjoints-Part4:Valvesandancillaryequip