【英文标准名称】:Hexagonsocketcountersunkheadscrews(ISO10642:2004);GermanversionENISO10642:2004
【原文标准名称】:内六角埋头螺钉
【标准号】:DINENISO10642-2004
【标准状态】:现行
【国别】:德国
【发布日期】:2004-06
【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】:规范(验收);米制的;螺纹;紧固件;特性;材料强度;验收规范;机械链接;交货条件;公差(测量);埋头紧固件;最小断裂负荷;六角头螺钉;凹头紧固件;名称与符号;尺寸;六角凹头螺钉;强度等级;尺寸公差;沉头螺钉;量规尺寸;螺钉;六
【英文主题词】:
【摘要】:Thedocumentcontainsdimensionalandtechnicalrequirementsofhexagonsocketcountersunkheadscrewsandspecifiestheirdesignation.
【中国标准分类号】:J13
【国际标准分类号】:21_060_10
【页数】:16P;A4
【正文语种】:德语


【英文标准名称】:StandardTestMethodforDeterminingFormaldehydeConcentrationsinAirandEmissionRatesfromWoodProductsUsingaLargeChamber
【原文标准名称】:使用一个大室测定空气中的甲醛浓度和木制品的甲醛排放的标准试验方法
【标准号】:ASTME1333-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D07.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:chromotropicacidanalysis;concentrationinair;emissionrate;formaldehyde;largechamber;woodproductscontainingformaldehyde;Airleakagetesting--buildingmaterials/constructions;Chromotropicacidanalysis;Conversionunits/factors;Formaldehyde;
【摘要】:SignificanceandUse:Limitationsonformaldehydeconcentrationsinairhavebeenestablishedforsomebuildingproductspermanentlyinstalledinmanufacturedandconventionalhomes.Thistestmethodprovidesastandardmeansoftestingtypicalproductsizes,suchas1.2by2.4m(4by8ft)sheets,atproductloadingsconsistentwithproductenduse.SummaryofTestMethod:Thistestmethodincorporatesachamberof22m3(800ft3)minimumsizetoevaluateformaldehydeconcentrationsinairandemissionratesfrombuildingproductsoveraspecifieddurationoftime.Thistestmethodemploysasinglesetofenvironmentalconditionsbutdifferentproductloadingratiostoassessformaldehydeconcentrationsinairandemissionratesfromcertainwoodproducts.Conditionscontrolledintheprocedureareasfollows:Conditioningofspecimenspriortotesting,Exposedsurfaceareaofthespecimensinthetestchamber,Testchambertemperatureandrelativehumidity,Numberofairchangesperhour,andAircirculationwithinthechamber.Attheendofa16to20-hperiodinthetestchamber,theairissampledandtheconcentrationofformaldehydeinairandemissionratearedetermined.Note38212;Caremustbeexercisedintheextensionoftheresultstoformaldehydeconcentrationsinairandemissionratesfromproductsunderdifferentconditionsofairchangerateorloadingratio,orboth.1.1Thistestmethodmeasurestheformaldehydeconcentrationinairandemissionratefromwoodproductscontainingformaldehydeunderconditionsdesignedtosimulateproductuse(see11.5andNote9).Theconcentrationinairandemissionrateisdeterminedinalargechamberunderspecifictestconditionsoftemperatureandrelativehumidity.Thegeneralproceduresarealsointendedfortestingproductcombinationsatproduct-loadingratiosandatair-exchangeratestypicaloftheindoorenvironment(1).Theproductstested,theloadingratiosandtheairexchangeratesemployedaredescribedinthetestreport.1.2Thistestmethoddeterminestheaverageformaldehydeconcentrationinairandemissionratefromanumberoflargesizesamples.Theaverageconcentrationandemissionratereported,thus,willnotprovideinformationonhigherorloweremittingpanelsinthetestlot.1.3Thismethodisprimarilyusedfortestingnewlymanufacturedpanelproductsthatareshippedfortestingeitherseal-wrappedinpolyethyleneorwithwastersheets,orwithboth.Whenthistestmethodisusedforevaluatingotherthannewlymanufacturedpanelproducts(afteroriginalapplication,installationoruse),themethodofpackagingandshippingtheproductfortestingshallbedescribedinthetestreport.1.4ThequantityofformaldehydeintheairsampletakenfromthechamberisdeterminedbyanadaptationoftheNationalInstituteforOccupationalSafetyandHealth(NIOSH)chromotropicacidtestprocedure.Ifanotheranalyticalprocedureisusedtodeterminethequantityofformaldehydeintheairsample,thatprocedureshallgiveresultsofequivalentorgreateraccuracyandprecisionthantheadaptedchromotropicacidprocedure.Detailedproceduresbasedonacetylacetone,pararosaniline(seeTestMethod),2,4-dinitrophenylhydrazine(DNPH)(seeTestMethodD5197)and3-methyl-2-benzothiazoline(MBTH)(seeTestMethod