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1、INTERNATIONA1.STANDARDISO4779editionSeCOnd202108Chaincomponentsfor1.iftingpurposesForgedeyehookwithpointand1.atchGrade41.stain1.essstee1.,so1.utionannea1.edE1.ementsdechainesdeIevageCrochetsdeIevageforgesenacierabeeetacei1.Grade4,acierinofdab1.efrecuitdhomog6n包sationISoR而加强O?财COPYRIGHTPROTECTEDDOCUM
2、ENTISO2021岫rkdea/山thUcdOthcnviscjftc三orrtmcehDVBiwixuioiti08phnn11UatiocBhrhotocp)Mng,ptbcatonpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanherequestedfromeitherISOattheaddressbe1.oworISn11thvcekHpfff1.0brjfigbodyhirHMwbtandriteN(nowMycamitteehasbeenestab1.ishedhastheri
3、ghttoberepresentedonthatcommittee.Internationa1.organizations,governmenta1.andnon-governmenta1.,in1.iaisonwithISO,a1.sotakepartinthework.ISOco1.1.aboratesc1.ose1.ywiththee1.ectrotechnica1.standardization.Internationa1.E1.ectrotechnica1.Commission(IEC)ona1.1.mattersofTheproceduresusedtodeve1.opthisdo
4、cumentandthoseintendedforitsfurthermaintenanceare蜩映也搬0f1.S0IECdWM1.h如。trWW1WekOrdanCeVMtheeditoria1.ru1.esoftheISO/IECDirectives.Part2(secwww.iso.org/dircctives).MionrigbtS.丽n施腻中栅泅序nsi曲?麻出就时做刑他doc三据R哪ssubjectofanypatentrightsidentifiedduringthedeve1.opmerUW4iewmwVw1.1.beintheIntroductionand/orontheI
5、SO1.istofpatentdec1.arationsreceived(seewww.iso.org/pa1.ents).Anytradeusedinthisconstitutenameendorsement.documentisinformationgivenfortheconvenienceofusersanddoesnotForanexp1.anationonthevo1.untarynatureofstandards,themeaningofISOspecifictermsand螂tt三UW网副腌Mth等惜用施膈解品tE神船用诺升刷即enc酰帼WingUR1.:www.iso.org
6、/iso/foreword.htm1.展妍楹验叔86忸桶13。吧叫微I雕乐磊A翩魄为reeMkchains,chains1.ings.Thissecondeditioncance1.sandrep1.acesthefirstedition(ISO4779:1986),whichhasbeentechnica1.1.yrevised.Themainchangescomparedtothepreviouseditionareasfo1.1.ows:1.imitationofthemateria1.susedtostain1.essstee1.s;correspondingadaptationoft
7、hea1.1.oye1.ementsandheattreatment;reductionOfthesizes.Correspondingtothere1.atednomina1.chainsizes；inc1.udingdetai1.ed44nwUebaseforca1.cu1.ationofdimensions,working1.oad1.imitsandmechanica1.requirementsinAnnexA.AJW博加用d哂嫩油t*wstaniiesthiscabd金u11ng(uWww405啷HveiHbertwhwiWnaHonaIstandardsbody.AChaincom
8、ponentsfor1.iftingpurposesForgedeyehookwithpointand1.atchGrade4,stain1.essstee1.,so1.utionannea1.ed1 ScopeConstnictionofgradeso1.utionannea!edstee1.andPreferabIponentinchains1.ingsofwe1.ded-49IMPORTANT-Forotherapp1.ications,e.g.stee1.wireropes1.ingsortexti1.es1.ings,itisimportantthatthehookdesignisc
9、heckedtoensureitsfitnessforasafeuse.according1.835.Tab1.e(s1.ingchainsandmechanica1.requirementsaccordingva1.uesTab1.etheWorkingdirectcorre1.ationSee-AftHex-B.Hooksaccordingtothisdocumentareforuseinthetemperaturerange-100to+400.NOTE2Thetermeyehookwithpointand1.atch*istakenfromISO1837:2003,Figure5.2
10、Normativereferencesconstitutesrequirements1.atesteditiondocment.referencedreferences,(inc1.udingamendments)app1.ies.app1.ies.stain1.essstee1.ISO3452-1,NOn-destructivetestingPenetranttestingPart1:Genera1.princip1.esTension/compressiontestingmachinesCa1.ibrationandverificationoftheforce-measuringsyste
11、mDesn1.3385-1,metro1.ogica1.Characteristicsspecifications(GPS)Dimensiona1.measuringequipmentPart1：bars,rodsandsectionsThisdocumentspecifiestherequirementsforforgedeyehookswithpointand1.atchofgrade4fromstain1.essstee1.and4fromstain1.essforuseso1.utionasNOTE1ThegradeforthehookaccordingtothisdocumentisUkenfromthegradeofthes1.ingchainaccordingtoISOtoBoth2andva1.uesforIhehooks)haveidentica1.scopestofor3.Thus,the1.oad1.imitW1.1.,ofhookstothes1.ingchainisgivenbytheW1.1.andespecia1.1.ythecodesystemontheproductbodyitse1.f.Thegradeofthehook
