【英文标准名称】:Protectivegloves-Generalrequirementsandtestmethods
【原文标准名称】:防护手套.一般要求和试验方法
【标准号】:BSEN420-2003+A1-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2003-09-24
【实施或试行日期】:2003-09-24
【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】:水解萃取物;化学危害;化学试剂;铬含量;分类系统;清洁处理;舒适;状态调节;制造日期;定义;设计;尺寸;效率;人类工效学;手套;信息;皮革;作标记;材料;数学计算;测量;移动性;职业安全;磁导;pH值;光度测定的;光度测量法;光度测量法(化学分析);图形符号;特性;防护服;防护服装;防护设备;防护手套;耐力;安全性;安全性要求;试样;抽样方法;规范(验收);试样制备;试件;测试;水渗透性;水蒸气吸收;水蒸气渗透性;工作场所安全性
【英文主题词】:Aqueousextracts;Chemicalhazards;Chemicals;Chromiumcontent;Classificationsystems;Cleaning;Comfort;Conditioning;Dataofthemanufacturer;Definitions;Design;Dimensions;Efficiency;Ergonomics;Gloves;Information;Leather;Marking;Materials;Mathematicalcalculations;Measurement;Mobility;Occupationalsafety;Permability;pH;Photometric;Photometry;Photometry(chemicalanalysis);Pictographs;Properties;Protectiveclothes;Protectiveclothing;Protectiveequipment;Protectivegloves;Resistance;Safety;Safetyrequirements;Samples;Samplingmethods;Specification(approval);Specimenpreparation;Testpieces;Testing;Waterpermeability;Watervapourabsorption;Watervapourpermeability;Workplacesafety
【摘要】:Thisstandarddefinesthegeneralrequirementsandrelevanttestproceduresforglovedesignandconstruction,resistanceofglovematerialstowaterpenetration,innocuousness,comfortandefficiency,markingandinformationsuppliedbythemanufacturerapplicabletoallprotectivegloves.NOTEItcanalsobeapplicabletoarmprotectorsandglovespermanentlyincorporatedincontainmentenclosures.ThisEuropeanStandarddoesnotaddresstheprotectivepropertiesofglovesandthereforeshouldnotbeusedalonebutonlyincombinationwiththeappropriatespecificEuropeanStandard(s).AnonexhaustivelistofthesestandardsisgivenintheBibliography.
【中国标准分类号】:C73
【国际标准分类号】:13_340_40
【页数】:30P.;A4
【正文语种】:英语


【英文标准名称】:Drysealpipethreads(inch)
【原文标准名称】:干封管螺纹(英制)
【标准号】:ASMEB1.20.3-1976
【标准状态】:现行
【国别】:美国
【发布日期】:1976-11-18
【实施或试行日期】:
【发布单位】:美国机械工程师协会(US-ASME)
【起草单位】:ASME
【标准类型】:()
【标准水平】:()
【中文主题词】:尺寸;规范;管;螺纹;管螺纹;名称与符号
【英文主题词】:Designations;Dimensions;Pipethreads;Pipes;Specification;Threads
【摘要】:DrysealpipethreadsarebasedontheUSA(American)pipethread,however,theydifferfromtheUSA(American)pipethreadinthattheyaredesignedtosealpressuretightjointswithoutthenecessityofusingsealingcompounds.Toaccomplishthissomemodificationofthreadformandgreateraccuracyinmanufactureisrequired.Therootsofboththeexternalandinternalthreadsaretruncatedslightlymorethanthecrests,Le.rootshavewiderflatsthancrests,sothatmetal-to-metalcontactoccursatthecrestsandrootscoincidentwithorpriortoflankcontact,seeFigure1.Thusasthethreadsareassembledbywrenching,therootsofthethreadscrushthesharpercrestsofthematingthreads.Thissealingactionatboththemajorandminordiameterstendstopreventspiralleakageandmakesthejointspressuretightwithoutthenecessityofusingsealingcompounds,providedthatthematingthreadsareinaccordancewithstandardspecificationsandtolerancesandarenotdamagedbygallinginassembly.Thecontrolofcrestandroottruncationissimplifiedbytheuseofproperlydesignedthreadingtools.Also,itisdesirablethatbothexternalandinternalthreadshavefullthreadheightfortheLIlength.However,wherenotfunctionallyobjectionable,theuseofacompatiblelubricantorsealantmaybeusedtominimizethepossibilityofgalling.ThisisdesirableinassemblingDrysealpipethreadsinrefrigerationandothersystemstoeffectapressuretightseal.1.1.1InordertoobtainapressuretightsealusingDrysealpipethreadswithoutasealer,itisnecessarytoholdcrestandroottruncationofbothinternalandexternalthreadswithinthelimitsspecified.Unlessthisisdonebyuseofthreadingtoolswiththecrestandroottruncationcontrolledsoastoassurerepro-ductionontheproductthreads,itisnecessarytouseasystemofmeasuringorasystemofgagingandmeasuringtodetermineconformance.1.1.2Evenwithouttruncationgages,thestandardpracticeofusingtwoseparatethreadgagesforDrysealpipethreads,eachwithadifferenceintruncation,lengthofengagementandpointofengagement,providesamoredetailedcheckofangle,leadandtaperdeviationsthanisrequiredfornon-drysealtaperpipethreads.1.I.3Onemethodofcheckingcresttruncationisbyusing6stepplaingages.Itshouldberecognizedthatthismethodmaygivemisleadingresultsinthatthecresttruncationoftheproductthreadsisalwaysless(flatnarrower)thanthatindicatedbythepositionofthegages,thedegreeofinconsistencydependingontheangle,leadandtaperdeviationspresentintheproductthread.1.1.4Anothermethodemploysbothcrestandroottruncationcheckgages.Therootcheckgageismadewithathreadformhavinganincludedangleof50degreesandwithasmallergagecrestflatthantherootflattobechecked.Themajordiameterofthisgageiscontrolledinrelationto6gagingstepsinasimilarmannertotheplain6stepcrestcheckgage.Likethecrestcheckgage,theresultsmaybesomewhatmisleadingexceptthatinthecaseoftherootcheckgage,theroottruncationoftheproductthreadisalwaysmore(flatwider)thanisindicatedbythepositionofthegages.1.1.5Unlesslead,angleandtaperofproductthreadsareveiywellcontrolled,useof6stepcrestandrootcheckgageswillresultinproductthreadswithnarrowercrestflatsandwiderrootflatsthanenvisionedbythedrysealtolerances.Useofsuchagagingsystemcouldresultinrejectionofthreadswhichwouldactuallyconformtothedrysealtolerancesspecified.Theonlycompletelyreliablerefereemethodfordeterminingwhethercrestandroottruncationhasbeenheldwithintoleranceisdirectmeasurementoftheexternalthreadflatsandmeasurementoftheseflatsonacastorsectionoftheinternalthread.
【中国标准分类号】:J04
【国际标准分类号】:21_040_20
【页数】:30P.;A4
【正文语种】:英语