NF M87-500-1972 法兰.总则
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来源:标准资料网
【英文标准名称】:Petroleumindustry.Flanges-General.
【原文标准名称】:法兰.总则
【标准号】:NFM87-500-1972
【标准状态】:现行
【国别】:法国
【发布日期】:1972-05-01
【实施或试行日期】:1972-04-28
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:J15
【国际标准分类号】:23_040_60;75_180_99
【页数】:5P.;A4
【正文语种】:其他
【英文标准名称】:Non-destructivetestingofsteeltubes-Part7:Automaticfullperipheralultrasonictestingofseamlessandwelded(exceptsubmergedarcwelded)tubesforthedetectionoflongitudinalimperfections;GEnglishversionofDINEN10246-7:2005
【原文标准名称】:钢管的无损检验.第7部分:无缝和焊接钢管(埋弧焊除外)纵向缺陷检测用全圆周自动超声波检验
【标准号】:EN10246-7-2005
【标准状态】:现行
【国别】:
【发布日期】:2005-12
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:密封性;检验方法;密度;定义;误差检测;无损检验;规范(验收);尺寸;管;试验;可容许性;壁厚;钢管;缺陷与故障;超声检验;不规则性;金属导管;无缝管;有缝管;自动;金属管;纵向裂纹;不渗透性;外径
【英文主题词】:Automatic;Defects;Definition;Definitions;Density;Dimensions;Errordetection;Impermeability;Inspectionmethods;Irregularities;Longitudinalflaws;Metalconduits;Metaltubes;Non-destructivetesting;Outsidediameters;Permissibility;Pipes;Seamedpipes;Seamlesspipes;Specification(approval);Steelpipes;Steeltubes;Testing;Tightness;Ultrasonictesting;Wallthicknesses
【摘要】:
【中国标准分类号】:H26
【国际标准分类号】:23_040_10;77_040_20
【页数】:13P.;A4
【正文语种】:英语
【英文标准名称】:Determinationoftheviscosityofpolymersindilutesolutionusingcapillaryviscometers-Part2:Poly(vinylchloride)resins
【原文标准名称】:用毛细管粘度计测定稀溶液中聚合物的粘度第2部分:聚氯乙烯树脂
【标准号】:ISO1628-2-1998
【标准状态】:现行
【国别】:国际
【发布日期】:1998-12
【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/TC61
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;试验;树脂;粘度计;溶剂;稀释;粘度;高聚物;测量技术;测量;溶液;聚氯乙烯;塑料;测定
【英文主题词】:Determination;Dilution;Measurement;Measuringtechniques;Plastics;Polymers;Polyvinylchloride;Resins;Solutions;Solvents;Testing;Vinylchloride;Viscometers;Viscosity;Viscositynumbers
【摘要】:ThispartofISO1628specifiesconditionsforthedeterminationofthereducedviscosity(alsoknownasviscositynumber)andK-valueofPVCresins.Itisapplicabletoresinsinpowderformwhichconsistofhomopolymersofthemonomervinylchlorideandcopolymers,terpolymers,etc.,ofvinylchloridewithoneormoreothermonomers,butwherevinylchlorideisthemainconstituent.Theresinsmaycontainsmallamountsofunpolymerizedsubstances(e.g.emulsifyingorsuspendingagents,catalystresidues,etc.)andothersubstancesaddedduringthecourseofthepolymerization.ThispartofISO1628isnotapplicable,however,toresinshavingavolatile-mattercontentinexcessof0,5%±0,1%,whendeterminedinaccordancewithISO1269.Inadditiontothis,itisnotapplicabletoresinswhicharenotentirelysolubleincyclohexanone.ThereducedviscosityandK-valueofaparticularresinarerelatedtoitsmolecularmass,buttherelationshipvariesdependingontheconcentrationandtype(s)ofothermonomer(s)present.HencehomopolymersandcopolymershavingthesamereducedviscosityorK-valuemaynothavethesamemolecularmass.ThevaluesdeterminedforreducedviscosityandK-value,foraparticularsampleofPVCresin,areinfluenceddifferentlybytheconcentrationofthesolutionchosenforthedetermination.HencetheuseoftheproceduresdescribedinthispartofISO1628willonlygivevaluesforreducedviscosityandK-valuethatarecomparablewhentheconcentrationsofthesolutionsusedareidentical.LimitingviscositynumberisnotusedforPVCresins.TheexperimentalproceduresdescribedinthispartofISO1628canalsobeusedtocharacterizethepolymericfractionobtainedduringthechemicalanalysisofaPVCcomposition.However,thevaluescalculatedforthereducedviscosityandK-valueinthesecircumstancesmaynotindicatetheactualvaluesfortheresinusedtoproducethecompositionbecauseoftheimpurenatureoftherecoveredpolymerfraction.
【中国标准分类号】:G31
【国际标准分类号】:83_080_20
【页数】:14P.;A4
【正文语种】:英语
