DIN 4425-1990 脚手架的轻型可调节底板.结构要求、承载能力的评估和检查
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【英文标准名称】:Lightadjustablebaseplatesforscaffolds;structuralrequirements,assessmentofload-bearingcapacityandinspection
【原文标准名称】:脚手架的轻型可调节底板.结构要求、承载能力的评估和检查
【标准号】:DIN4425-1990
【标准状态】:现行
【国别】:德国
【发布日期】:1990-11
【实施或试行日期】:1990-11-01
【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】:脚手架零件;防腐蚀;数学计算;脚手架;安全工程;建筑;作标记;规范(审批);设计;钢;定义;材料;脚手架搭设;安全;监督(认可);验证;额定值;荷载能力;轻;主轴;硬挺度;螺纹;设备安全
【英文主题词】:
【摘要】:Ligthadjustablebaseplatesforscaffoldsareusedtogetherwithbaseplatesforverticaladjustmentofstandardsatthebaseofascaffold.Inmostcasestheirload-bearingcapacityisdecisiveforthelimitationoftheload-bearingcapacityofthescaffold.Apartfromstructuralrequirementsthisstandardincludesregulationsfortheassessmentofload-bearingcapacityandtheinspection.
【中国标准分类号】:P96
【国际标准分类号】:7430
【页数】:6P;A4
【正文语种】:德语
【英文标准名称】:StandardPracticeforContactUltrasonicTestingofWeldments
【原文标准名称】:焊接的超声接触检验的标准实施规程
【标准号】:ASTME164-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:E07.06
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:NDTofweldments;nondestructivetesting;ultrasoniccontactexamination;ultrasonicNDTofweldments;weldments;Aluminumalloys;Calibration--ultrasonicanalysisinstrumentation;Ferrousmetals/alloys;Ultrasonictesting;Ultrasonictesting--welds;W
【摘要】:Thetechniquesforultrasonicexaminationofweldsdescribedinthispracticeareintendedtoprovideameansofweldexaminationforbothinternalandsurfacediscontinuitieswithintheweldandtheheat-affectedzone.Thepracticeislimitedtotheexaminationofspecificweldgeometriesinwroughtorforgedmaterial.Thetechniquesprovideapracticalmethodofweldexaminationforinternalandsurfacediscontinuitiesandarewellsuitedtothetaskofin-processqualitycontrol.Thepracticeisespeciallysuitedtothedetectionofdiscontinuitiesthatpresentplanarsurfacesperpendiculartothesoundbeam.Othernondestructiveexaminationsmaybeusedwhenporosityandslaginclusionsmustbecriticallyevaluated.Whenultrasonicexaminationisusedasabasisofacceptanceofwelds,thereshouldbeagreementbetweenthemanufacturerandthepurchaserastothespecificreferencestandardsandlimitstobeused.ExamplesofreferencestandardsaregiveninSection7.Adetailedprocedureforweldexaminationdescribingallowablediscontinuitylimitsshouldbewrittenandagreedupon.1.1ThispracticecoverstechniquesfortheultrasonicA-scanexaminationofspecificweldconfigurationsjoiningwroughtferrousoraluminumalloymaterialstodetectwelddiscontinuities(Note1).Thereflectionmethodusingpulsedwavesisspecified.Manualtechniquesaredescribedemployingcontactofthesearchunitthroughacouplantfilmorwatercolumn.1.2Thispracticeutilizesanglebeamsorstraightbeams,orboth,dependinguponthespecificweldconfigurations.Practicesforspecialgeometriessuchasfilletweldsandspotweldsarenotincluded.Thepracticeisintendedtobeusedonthicknessesof0.250to8in.(6.4to203mm).Note18212;Thispracticeisbasedonexperiencewithferrousandaluminumalloys.Othermetallicmaterialscanbeexaminedusingthispracticeprovidedreferencestandardscanbedevelopedthatdemonstratethattheparticularmaterialandweldcanbesuccessfullypenetratedbyanultrasonicbeam.Note28212;ForadditionalpertinentinformationseePracticeE317,TerminologyE1316,andPracticeE587.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J33
【国际标准分类号】:25_160_40
【页数】:24P.;A4
【正文语种】:英语
【英文标准名称】:Determinationofchromiumcontentofsteelandironbypotentiometricorvisualmethod(ISO4937:1986);germanversionEN24937:1990
【原文标准名称】:钢和铁.铬含量的测定.电位滴定法或目视检验法
【标准号】:DINEN24937-1992
【标准状态】:现行
【国别】:德国
【发布日期】:1992-11
【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】:钢;含量测定;容量分析;外观检查(试验);铁;铸铁;宏观检查;电势分析法;铬;视觉的;化学分析和试验;电位测量法;滴定法
【英文主题词】:Cast-iron;Chemicalanalysisandtesting;Chromium;Determinationofcontent;Iron;Macroscopicexamination;Potentiometricanalysis;Potentiometricmethods;Steels;Titration;Visual;Visualinspection(testing
【摘要】:Thedocumentspecifiesamethodforthedeterminationofchromiuminsteelandironbypotentiometricorvisualtitrationforchromiumcontentsbetween0.25and35%.
【中国标准分类号】:H11
【国际标准分类号】:77_080_01
【页数】:10P;A4
【正文语种】:德语
