BS 7417-1991 平面'O'形密封液压耦合器界面尺寸规范
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【英文标准名称】:Specificationforinterfacedimensionsofflatface'O'-ringsealhydrauliccouplings
【原文标准名称】:平面'O'形密封液压耦合器界面尺寸规范
【标准号】:BS7417-1991
【标准状态】:现行
【国别】:英国
【发布日期】:1991-04-30
【实施或试行日期】:1991-04-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:液压传动系统;螺纹;螺纹管接头;管连接件;管联接器;密封件;液压联轴器;尺寸;界面;环形密封圈;粗糙度(表面)
【英文主题词】:Dimensions;Hydrauliccouplings;Hydraulictransmissionsystems;Interfaces;Pipecouplings;Roughness(surface);Screwedfittings;Seals;Threads;Toroidalsealingrings
【摘要】:Basicinterfacedimensionstoensureinterchangeabilityofhydraulicconnectorsandadaptorsforconnectingrigidandflexibletubingtohydraulicfluidpowerequipment.
【中国标准分类号】:J20
【国际标准分类号】:23_100_40
【页数】:12P.;A4
【正文语种】:英语
【英文标准名称】:TestMethodsforSamplingandTestingFlyAshorNaturalPozzolansforUseasaMineralAdmixtureinPortland-CementConcrete
【原文标准名称】:硅酸盐水泥混凝土中矿物掺合料用飞灰或天然火山灰的取样和试验方法
【标准号】:ASTMC311-1995
【标准状态】:作废
【国别】:美国
【发布日期】:1995
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:建筑;水泥;混凝土;火山灰;施工材料;试验;火山灰水泥;矿质集料;飞灰;集料;硅酸盐水泥
【英文主题词】:aggregates;testing;flyash;constructionmaterials;pozzolaniccement;cements;pozzolanas;construction;mineralaggregates;portlandcement;concretes
【摘要】:
【中国标准分类号】:Q13
【国际标准分类号】:91_100_20
【页数】:
【正文语种】:英语
【英文标准名称】:StandardPracticeforUltrasonicExaminationoftheWeldZoneofWeldedPipeandTubing
【原文标准名称】:焊接管道焊接区域的超声波检验标准实施规程
【标准号】:ASTME273-2001(2005)
【标准状态】:现行
【国别】:
【发布日期】:2001
【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】:管;无损检验;超声波学
【英文主题词】:anglebeam;longitudinalweldedpipe;longitudinalweldedtubing;nondestructiveexamination;ultrasonicexamination
【摘要】:1.1Thispracticedescribesgeneralultrasonicexaminationproceduresforthedetectionofdiscontinuitiesintheweldandadjacentheataffectedzonesofweldedpipeandtubingbyscanningwithrelativemotionbetweenthesearchunitandpipeortube.Whencontactorunfocusedimmersionsearchunitsareemployed,thispracticeisintendedfortubularproductshavingspecifiedoutsidediameters2in.(50mm)andspecifiedwallthicknessesof1/8to11/16in.(3to27mm).Whenproperlyfocusedimmersionsearchunitsareemployed,thispracticemayalsobeappliedtomaterialofsmallerdiameterandthinnerwall.Note18212;Whencontactorunfocusedimmersionsearchunitsareused,precautionsshouldbeexercisedwhenexaminingpipesortubesnearthelowerspecifiedlimits.Certaincombinationsofsearchunitsize,frequency,thin-wallthicknesses,andsmalldiameterscouldcausegenerationofunwantedsoundwavesthatmayproduceerroneousexaminationresults.1.2Allsurfacesofmaterialtobeexaminedinaccordancewiththispracticeshallbecleanfromscale,dirt,burrs,slag,spatterorotherconditionsthatwouldinterferewiththeexaminationresults.Theconfigurationoftheweldmustbesuchthatinterferingsignalsarenotgeneratedbyreflectionsfromit.Treatmentoftheinnersurfaceandoutersurfaceweldbeadssuchastrimming("scarfing")orrollingisoftenrequiredtoremoveprotuberancesthatcouldresultinspuriousreflections.1.3Thispracticedoesnotestablishacceptancecriteria,theymustbespecifiedbytheusingparties.1.4Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.TheSIequivalentsareinparenthesesandmaybeapproximate.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H26
【国际标准分类号】:23_040_01
【页数】:4P.;A4
【正文语种】:
