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【英文标准名称】:Pipethreadswherepressure-tightjointsaremadeonthethreads-Part2:Verificationbymeansoflimitgauges
【原文标准名称】:用螺纹密封的管螺纹第2部分:用极限量规检验
【标准号】:ISO7-2-2000
【标准状态】:现行
【国别】:国际
【发布日期】:2000-09
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC5
【标准类型】:()
【标准水平】:()
【中文主题词】:管道配件;管螺纹;螺纹;管道工程系统;验证;尺寸公差;尺寸;螺纹量规;极限量规;管联接器;压紧
【英文主题词】:Dimensionaltolerances;Dimensions;Limitgauges;Pipecouplings;Pipefittings;Pipethreads;Pipeworksystems;Pressure-tight;Threadgauges;Threads;Verification
【摘要】:ThispartofISO7specifiesaprocessusinglimitgauges,forthevalidationoftaperinternalandexternalthreadsandparallelinternalthreadsonpipingsystemscomponentsandotherproducts,thedimensionsandtolerancesofwhicharedetailedinISO7-1.Thegaugingsystemdescribedmaynotbesuitable,withoutspecialprecautions,forgaugingofthreadsoninjectionmouldedplasticworkpieces.ThispartofISO7doesnotcovercompletelyalltherequirementsnecessaryforfullcontrolofthreadqualityanddimensions.AdditionalcontroloftoolsandequipmentandvisualinspectionduringproductionarerequiredtoensurecompletecompliancewithISO7-1,forexamplethelengthofusefulthreadoninternallythreadedworkpiecesshouldbecheckedbydirectmeasurement.AnnexAgivesasummaryofthegaugesincludedinthispartofISO7,togetherwithdetailsofthethreadelementscontrolledbyeachgaugeandgaugeidentificationnumbers.IntheeventofadisputeovercompliancewiththerequirementsofISO7-1,thegaugesinthispartofISO7aretobeconsideredasdecisiveforthethreadelementswhichtheycontrolontheworkpiece.
【中国标准分类号】:J05
【国际标准分类号】:21_040_30
【页数】:30P.;A4
【正文语种】:英语