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GY 52-1989 调频广播差转机运行技术指标等级

作者:标准资料网 时间:2024-05-09 14:54:35  浏览:8952   来源:标准资料网
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基本信息
标准名称:调频广播差转机运行技术指标等级
中标分类: 通信、广播 >> 广播、电视设备 >> 广播、电视发送与接收设备
替代情况:被GY/T 169-2001代替
发布日期:
实施日期:2003-05-01
首发日期:
作废日期:2001-06-01
出版日期:
页数:4页
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前言

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引用标准

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所属分类: 通信 广播 广播 电视设备 广播 电视发送与接收设备
下载地址: 点击此处下载
【英文标准名称】:Admixturesforconcrete,mortarandgrout-Testmethods-Part11:Determinationofairvoidcharacteristicsinhardenedconcrete;GermanversionEN480-11:1998
【原文标准名称】:混凝土,灰泥和薄灰浆的添加剂.试验方法.第11部分:固化混凝土中气孔特性的测定
【标准号】:DINEN480-11-1999
【标准状态】:现行
【国别】:德国
【发布日期】:1999-02
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:测定;掺和剂;生产;符号;混凝土;组分;额定值;定义;施工材料;特性;试验;灰浆
【英文主题词】:testing;airvoids;ratings;definitions;concretes;constructionmaterials;composition;mortars;additives;definition;symbols;properties;solidconcrete;groutingmortar;mixedprocesses;production;determination
【摘要】:
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:12P.;A4
【正文语种】:德语


【英文标准名称】:StandardSpecificationforDeformedandPlainStainless-SteelBarsforConcreteReinforcement
【原文标准名称】:混凝土配筋用变形和普通不锈钢钢筋的标准规格
【标准号】:ASTMA955/A955M-2011
【标准状态】:现行
【国别】:
【发布日期】:2011
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:A01.05
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:钢筋混凝土;耐腐蚀性;磁性能;不锈钢筋
【英文主题词】:concretereinforcement;corrosionresistance;magneticproperties;stainlesssteelbars
【摘要】:1.1Thisspecificationcoversdeformedandplainstainless-steelbarsforconcretereinforcementincutlengthsandcoilsusedinapplicationsrequiringresistancetocorrosionorcontrolledmagneticpermeability.ThestandardsizesanddimensionsofdeformedbarsandtheirnumericaldesignationshallbethoselistedinTable1.Thetextofthisspecificationreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthespecification.1.1.1Supplementaryrequirement(S1)ofanoptionalnatureisprovided.Itshallapplyonlywhenspecifiedbythepurchaser.Inordertoobtainacontrolledmagneticpermeabilityproduct,steelconformingtoSupplementaryRequirementS1shouldbeordered.1.2Thechemicalcompositionofthestainlesssteelalloyshallbeselectedforsuitabilitytotheapplicationinvolvedbyagreementbetweenthemanufacturerandthepurchaser.Thisisanimportantconsiderationinachievingthedesiredcorrosionresistanceorcontrolledmagneticpermeability,orboth,becausethesepropertiesarenotprovidedbyallstainlesssteels.Note18212;ThealloysshowninTable2havefoundthemostuseinNorthAmerica.Otheralloysmayalsoprovidedesiredproperties;consultwiththemanufacturerforstainlesssteelalloypropertiesandavailability.1.3Requirementsfortherelativedeformationareaofthree-sideddeformedbarsarecontainedinAnnexA4.1.4Barsareofthreeminimumyieldstrengthlevels,namely,40000[280MPa],60000[420MPa],and75000psi[520MPa],designatedasGrade40[280],Grade60[420],andGrade75[520],respectively.1.5Plainroundsinsizesuptoandincluding2in.[50.8mm]indiameterincoilsorcutlengths,whenordered,shallbefurnishedunderthisspecificationinGrade40[280],Grade60[420],andGrade75[520],respectively.Bendingproperties,whenrequired,shallbebyagreementbetweenthemanufacturerandpurchaser.Requirementsprovidingfordeformationsandmarkingshallnotbeapplicabletoplainbars.1.6Weldabilityofmoststainlesssteelcompositionsisgenerallygood,however,pre-weldorpost-weldprocedures,orboth,arenecessary.Wherematerialistobewelded,aweldingproceduresuitableforthechemicalcompositionandintendeduseorserviceshallbeused.Retestingofphysicalpropertiesshouldbeconsideredfollowingweldingproceduresdependinguponthesteelcompositionandweldingoperationinvolved.Note28212;ItisrecommendedthattheuserconsultthemanufacturerforinformationavailablefromtheNickelDevelopmentInstitute(NIDI)(Toronto,Canada).1.7Thisspecificationisapplicableforordersineitherinch-poundunits(asSpecificationA955)orinSIunits(asSpecificationA955M).1.8Thevaluesstatedineitherinch-poundorSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.1.9Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:77_140_60
【页数】:13P.;A4
【正文语种】:



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