GB 1241-1983 船用外螺纹锻钢截止止回阀
时间:2024-05-12 22:12:40 来源: 标准资料网 作者：标准资料网 阅读：9327
基本信息
| 标准名称： | 船用外螺纹锻钢截止止回阀 |
| 英文名称： | Marine forged steel male thread stop and check valves |
| 中标分类： |
船舶 >>
船舶管路附件 >>
船用阀件 |
| ICS分类： |
|
| 替代情况： | 替代GB 1241-76;被GB/T 1241-2008代替 |
| 发布部门： | 中国船舶工业集团公司 |
| 发布日期： | 1983-01-02 |
| 实施日期： | 1984-10-01 |
| 首发日期： | 1976-09-08 |
| 作废日期： | 2008-08-01 |
| 主管部门： | 中国船舶工业集团公司 |
| 归口单位： | 全国船用机械标准化技术委员会 |
| 起草单位： | 江西船用阀门厂 |
| 出版社： | 中国标准出版社 |
| 出版日期： | 1984-10-01 |
| 页数： | 3页 |
适用范围
内容详见本标准。
前言
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目录
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引用标准
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所属分类： 船舶 船舶管路附件 船用阀件
【英文标准名称】:StandardTestMethodforSurfaceWaterAbsorptionofTerryFabrics(WaterFlow)
【原文标准名称】:丝绒纺织品表面吸水性的标准试验方法(水流试验法)
【标准号】:ASTMD4772-1997(2004)
【标准状态】:现行
【国别】:
【发布日期】:1997
【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】:D13.59
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:水;吸收;表面水吸收;丝绒纺织品;制毛巾的布料
【英文主题词】:absorption;surfacewaterabsorption;terryfabric;toweling;water;
【摘要】:Thistestmethodmaybeusedtotestthesurfacewaterabsorptionofterryfabricsforbathtowels,bathsheets,handtowels,kitchentowels,dishcloths,washcloths,beachwear,bathrobes,andthelike.Differentspecificationsmaybeneededforeachofthesefabricsbecauseofdifferentapplications.4Itisrecognizedthatsurfacewaterabsorptionisonlyoneofthecharacteristicsthattheultimateconsumermayuseindeterminingwhichterryfabricisacceptable.ConsultSpecificationD5433forothercharacteristicsthatmaybeapplicabletoterryfabrics.Thistestmethodisrecommendedforqualitycontroltestingofterryfabricsduringmanufacturingandproductcomparisonsofdifferentterryfabricsbymanufacturers,retailers,andusers.Thistestmethodmaybeusedfortheacceptancetestingofcommercialshipmentsofterryfabrics,butcautionisadvisedsinceinterlaboratoryprecisionisknowntobepoor.Comparativetestsasdirectedin5.4.1maybeadvisable.5.4.1Incaseofadisputearisingfromdifferencesinreportedtestresultswhenusingthistestmethodforacceptancetestingofcommercialshipments,thepurchaserandthesuppliershouldconductcomparativeteststodetermineifthereisastatisticalbiasbetweentheirlaboratories.Competentstatisticalassistanceisrecommendedfortheinvestigationofbias.Asaminimum,thetwopartiesshouldtakeagroupoflaboratorysamplingunits(suchastowels)thatareashomogeneousaspossibleandthatarefromalotofmaterialofthetypeinquestion.Thelaboratorysamplingunitsshouldthenberandomlyassignedinequalnumberstoeachlaboratoryfortesting.Theaverageresultsfromthetwolaboratoriesshouldbecomparedusingappropriatestatisticalanalysisforunpaireddataandanacceptableprobabilitylevelchosenbythetwopartiesbeforethetestingisbegun.Ifabiasisfound,eitheritscausemustbefoundandcorrectedorthepurchaserandsuppliermustagreetointerpretfuturetestresultswithconsiderationoftheknownbias.1.1Thistestmethoddeterminestheabilityofaterryfabrictorapidlyabsorbandretainliquidwaterfromsurfacessuchashumanskin,dishes,andfurniture.1.2Thistestmethodisnotapplicabletonon-terryfabricssuchashucktowels,honeycombtowels,crashtowels,flour-sacktowels,andnonwovenwipes.Thesteepangleofthespecimenontheapparatusmaycausealargeamountofwatertorunoffthesenon-pilefabrics,orthelightweight/openstructureofthesefabricsmayallowalargeamountofwatertocompletelypassthroughthespecimen;thusthetestresultmaynotbeavalidmeasureofanon-terryfabric'sabilitytoabsorbwater.1.3Thistestmethodisnotapplicabletodecorativeterryfabricsthatwillnotbeusedtoabsorbwaterfromsurfaces.1.4ThistestmethodiswritteninSIunits.Theinch-poundunitsthatareprovidedarenotnecessarilyexactequivalentsoftheSIunits.Eithersystemofunitsmaybeusedinthistestmethod.IncaseofrefereedecisionstheSIunitswillprevail.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:W04
【国际标准分类号】:59_080_99
【页数】:10P.;A4
【正文语种】: