标准资料网-标准资料免费资源平台

【英文标准名称】:NormalParaffinsbyCapillaryGasChromatography
【原文标准名称】:毛细管气相色谱法测定正链烷
【标准号】:ASTMUOP915-1992
【标准状态】:现行
【国别】:美国
【发布日期】:1992
【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】:
【标准类型】:(UOP)
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Thismethodisfordeterminingtotalnormalparaffins(TNP)andindividualnormalparaffinsinhydrocarbons,suchastheUOPMolexprocessstreams,includingsamplescontainingtheMolexprocessdesorbent.SamplesaretypicallyintheC8toC20carbonnumberrange.Bypreheatingthesampleandaddingasuitablesolvent,therangecanbeextendeduptoC40.Themass-%TNPatthehighandlowconcentrationstendtobebiasedslightlyhighbecauseofincompletecompensationfornon-normalsatthenormalparaffinsites.AslightlymoreaccurateTNPvaluewouldbeexpectedusingUOPMethod411(seeNOTE).Thelowerlimitofdetectionis0.01mass-%foranycompound.
【中国标准分类号】:
【国际标准分类号】:
【页数】:10P.;A4
【正文语种】:英语


【英文标准名称】:Non-destructivetestingofsteeltubes.Automatedfullperipheralultrasonictestingofseamlessandwelded(exceptsubmergedarc-welded)steeltubesforthedetectionoflongitudinaland/ortransverseimperfections
【原文标准名称】:钢管的无损检测.横向和/或纵向缺陷探测用无缝和焊接(埋弧焊除外)钢管的自动全周界超声波检验
【标准号】:BSENISO10893-10-2011
【标准状态】:现行
【国别】:英国
【发布日期】:2011-04-30
【实施或试行日期】:2011-04-30
【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】:
【英文主题词】:Automation;Definitions;Dimensions;Errorchecking;Irregularities;Longitudinaldirections;Non-destructivetesting;Permissibility;Seamedpipes;Seamless;Seamlesspipes;Specification(approval);Steelpipes;Steeltubes;Steels;Testequipment;Testmethods;Testreports;Testing;Transversewaves;Ultrasonictesting;Weldseamtesting;Welded
【摘要】:ThispartofISO10893specifiesrequirementsforautomatedfullperipheralultrasonicshearwave(generatedbyconventionalorphasedarraytechnique)testingofseamlessandwelded[exceptsubmergedarc-welded(SAW)]steeltubes,forthedetectionoflongitudinaland/ortransverseimperfections.Unlessotherwisespecifiedinthepurchaseorder,thetestingmethodisapplicabletothedetectionofpredominantlylongitudinalimperfections.Inthecaseoftestingonlongitudinalimperfections,Lambwavetestingcanbeappliedatthediscretionofthemanufacturer.Forseamlesstubes,byagreementbetweenthepurchaserandmanufacturer,testingprinciplesofthispartofISO10893canbeappliedtodetectimperfectionshavingotherorientations.ThispartofISO10893isapplicabletotheinspectionoftubeswithanoutsidediametergreaterthanorequalto10mm,normallywithanoutsidediameter-to-thicknessratiogreaterthanorequalto5.ThispartofISO10893canalsobeapplicabletothetestingofcircularhollowsections.NOTEForoptionsfortestingtubeswithanoutsidediameter-to-thicknessratiolessthan5onlongitudinalimperfections,seeAnnexA.
【中国标准分类号】:H26
【国际标准分类号】:23_040_10;77_040_20;77_140_75
【页数】:22P.;A4
【正文语种】:英语