BS4825-1-1991

LicensedCopy:WangBin,ISO/ExchangeChinaStandardsInformationCentre,28April2003,UncontrolledCopy,(c)BSIBRITISHSTANDARDBS4825-1:1991IncorporatingAmendmentNo.1Stainlesssteeltubesandfittingsforthefoodindustryandotherhygienicapplications—Part1:Specificationfortubes

 
 LicensedCopy:WangBin,ISO/ExchangeChinaStandardsInformationCentre,28April2003,UncontrolledCopy,(c)BSIBS4825-1:1991ThisBritishStandard,havingbeenpreparedunderthedirectionofthePipingSystemsComponentsStandardsPolicyCommittee,waspublishedundertheauthorityoftheStandardsBoardandcomesintoeffecton31January1992©BSI21January2003ThefollowingBSIreferencesrelatetotheworkonthisstandard:CommitteereferencePSE8Draftforcomment8872919DCISBN0580193586CommitteesresponsibleforthisBritishStandardThepreparationofthisBritishStandardwasentrustedbythePipingSystemsComponentsStandardsPolicyCommittee(PSE/-)toTechnicalCommitteePSE/8,uponwhichthefollowingbodieswererepresented:AdhesiveTapeManufacturers’AssociationBritishCompressedAirSocietyBritishGasplcBritishMalleableTubeFittingsAssociationBritishSteelIndustryBritishValveandActuatorManufacturers’AssociationBritishWeldedSteelTubeAssociationEngineeringEquipmentandMaterialsUsers’AssociationFoodandDrinkFederationInstitutionofCivilEngineersInstitutionofGasEngineersInstitutionofWaterandEnvironmentalManagementLargeDiameterSteelTubeAssociationMechanicalHandlingEngineers’AssociationStainlessSteelFabricators’AssociationofGreatBritainSteelTubeFittingsManufacturers’TechnicalAssociationWaterCompaniesAssociationWaterResearchCentreWaterServicesAssociationofEnglandandWalesCooptedmemberThefollowingbodieswerealsorepresentedinthedraftingofthestandard,throughsubcommitteesandpanels:BrewersSocietyDairyTradeFederationInstitutionofProductionEngineersMilkingMachineManufacturers’AssociationAmendmentsissuedsincepublicationAmd.No.DateComments1404221January2003Revisionoftolerancelevelin5.2LicensedCopy:WangBin,ISO/ExchangeChinaStandardsInformationCentre,28April2003,UncontrolledCopy,(c)BSIBS4825-1:1991©BSI21January2003iContentsPageCommitteesresponsibleInsidefrontcoverForewordii1Scope12Informationtobesuppliedbythepurchaser13Materialsandmanufacture14Dimensions25Tolerances36Surfacefinish37Manufacturer’scertificate38Marking4AppendixAInformationtobesuppliedbythepurchaserintheenquiryand/ororder5AppendixBPurchaseroptions5Table1—Materialgrades1Table2—Dimensionsoftubes2Table3—Surfacefinishoftubes3Publication(s)referredto7LicensedCopy:WangBin,ISO/ExchangeChinaStandardsInformationCentre,28April2003,UncontrolledCopy,(c)BSIBS4825-1:1991ii©BSI21January2003ForewordThisPartofBS4825hasbeenpreparedunderthedirectionofthePipingSystemsComponentsStandardsPolicyCommittee.ItisarevisionofBS4825-1:1972,whichiswithdrawn.BS4825ispublishedinfiveParts:—Part1:Specificationfortubes;—Part2:Specificationforbendsandtees;—Part3:Specificationforclamptypecouplings;—Part4:Specificationforthreaded(IDFtype)couplings;—Part5:Specificationforrecessedringjointtypecouplings.ThisPartofBS4825incorporatestherangeofsizesgreaterthan101.6mmasspecifiedinISO2037,publishedbytheInternationalOrganizationforStandardization.Sizesuptoandincluding101.6mmaredirectmetricequivalentsoftherangeofimperialsizesandwallthicknessespreferredbyUnitedKingdomindustry.TheessentialdifferencesbetweenthisPartofBS4825andBS4825-1:1972areasfollows.a)Agreaterselectionofmaterialsisgiven.b)Sizesuptoandincluding101.6mmoutsidediameterareexactmetricequivalentsofimperialsizesoftube.c)Alternativethicknessesoftubeof1.6mmand1.2mmhavebeenincludedintherangefrom25.4mmto50.8mmoutsidediameter.d)Thetolerancebandforexactlengthshasbeenreduced.e)Markingrequirementsaregiveningreaterdetail.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,pagesiandii,pages1to7andabackcover.TheBSIcopyrightnoticedisplayedinthisdocumentindicateswhenthedocumentwaslastissued.LicensedCopy:WangBin,ISO/ExchangeChinaStandardsInformationCentre,28April2003,UncontrolledCopy,(c)BSIBS4825-1:1991©BSI21January200311ScopeThisPartofBS4825specifiesrequirementsforstainlesssteeltubesinstraightlengthsforthefoodindustryandotherindustrieswherehygienicrequirementsarenecessary.Thisstandardcoversseamlessandlongitudinallyweldedausteniticstainlesssteeltubefrom12.7mmto406.4mmoutsidediameter,andspecifiesdimensions,tolerances,surfacefinishandmaterials.ThestandarddoesnotcoverERWtube.NOTE1Thesuitabilityofatubeforahygienicapplicationisdeterminedmainlybyitsmaterial,finishandtheconditionofthelongitudinalweld(seeClause7).NOTE2Thetitlesofthepublicationsreferredtointhisstandardarelistedontheinsidebackcover.2Informationtobesuppliedbythepurchaser2.1ThepurchaseristoprovidetothesuppliertheinformationgiveninAppendixAtoenableproductstobesuppliedinaccordancewiththisstandard.2.2AnumberofoptionsarepermittedbythisstandardasgiveninAppendixB.Boththedefinitiverequi