美标蝶阀结构视频

188体育手机投注_188体育投注:Peopleattendthe"ILoveEurope"marchwhichwascalledtocelebratethe60thanniversaryoftheTreatyofRomeinWarsaw,Poland,onSaturday.[Photo/Agencies]Citingdata,someBelgianmediaoutletshavereportedthatChineseinvestorsinBelgiumhavecreatedupto18,500jobsforlocalresidents.AndonaverageoneChineseinvestorhascontributed€1million($1.08million)inrevenue,reflectingthehighproductivityandprofit-makingcapabilityofChineseinvestment.SomeCentralandEasternEuropeancountriesarefacinglaborshortagespartlybecauseofgrowingChineseinvestmentinmanufacturingandtheendofEuropeanUnion'seconomicstagnation.Inthepastfiveyears,Huawei,forexample,hascreatedupto12,000jobsintheEU.Lastweek,BelgiumandHungarybecamefull-timemembersoftheChina-ledAsianInfrastructureInvestmentBank,whichmeansone-thirdofthebank's70membersarefromEurope.AndthedevelopmentpathoftheAIIBsuggestscooperationamongmemberswilldeepentobringAsia,EuropeandAfricacloser.ButdespitetheEUmarkingits60thanniversary,itsleadersareinasombermood,asEuropeanCommissionPresidentJean-claudeJunckerputit,becauseoftheUnitedKingdombeginningtheformalprocesstoleavetheEUandtheuncertaintiescreatedbytheUnitedStatesadministrationunderPresidentDonaldTrump.AftertheEC'srecentdecisiontoassessChina'sinvestmentactivitiesintheEUmorestrictly,somemembersoftheEuropeanParliamenthavealsoproposedthatforeigninvestmentinEuropeshouldbecloselymonitoredin"strategicsectors"suchasenergy,waterandtelecommunications.ManyobserverssaythemoveistargetedatChina,whereEUbusinesses,accordingtoEuropeanpoliticians,don'thavethesameaccessthatChineseenterprisesdoinEurope.ThepoliticiansevenclaimthatEUinvestmentinChinaisfalling.Thefactis,Europeaninvestors,alongwithotherforeigninvestors,arenowbeingtreatedonparwithdomesticinvestorsinChinaafterhavingenjoyedpreferentialtreatmentforthreedecadessincethebeginningofreformandopening-up.AndsincetheEU'saccumulatedinvestmentinChinaisalreadyhuge,itisnaturalforittomaintainthatlevelorevenfallslightly.Asfarasexpandingbusinessandinvestmentoverseasisconcerned,EuropeisanoldhandwhileChinaisanewcomerifonegoesbythetwosides'tradinghistory.Giventhefacts,perhapsthisistherighttimeforChinaandtheEUtodiscusstradedifferencesandmakepolicydecisions.TheunderstandinginBrusselsnowisthatBeijingispromotingglobalizationandtheworldneedstosupportit.Aspartofitscommitmenttoglobalization,Chinahasbeenencouragingoverseasinvestmentandofferingpublicgoods.However,despiteitshistoryofstrengtheningregionalintegration,theEU,manysuspect,isshowingsignsofresortingtoprotectionismostensiblytoprotectEuropeanenterprisesandproducts.It'sanothermatter,though,thatmanyEuropeanbusinessesandmemberstatesdon'tsupportit.AdvocatingglobalizationisnottheresponsibilityofChinaalone.TheEUandtheUSandotherglobalplayersshouldpromoteglobalizationmoreintenselythanChina.TheChina-EUpartnershipisunique,astheyworkmorecohesivelyduringhardtimes,butnotnecessarilyduringnormaltimes.AcarefulexaminationoftheinteractionsandexchangesbetweenBeijingandBrusselsduringtheglobalfinancialanddebtcriseswillprovethecontention.Howevertruethatmaybe,thepriorityfortheEUnowistotakeswift,decisiveandstrategicmeasurestoidentifynewareas-China'sgrowinginvestmentforexample-tohelptheBrussels-Beijingpartnershiptoovercometheodds.Moreimportantly,theEUshouldrealizethattakingahardlineagainstChineseproductsandinvestmentatthiscriticaltimewouldbeabigmistake.Thereasonissimple:morejobsandbetterlivelihoodswillmakemoreEuropeans,especiallythoseyouthsstrugglingtoearnadecentliving,havemoreconfidenceintheEUasaneconomicunion.TheauthorisdeputychiefofChinaDailyEuropeanBureau.fujing@chinadaily.com.cn

该系列蝶阀式我公司工程技术人员研制开发的新一代高性能产品,其性能已处于国内外先进水平、广泛适用于低压、中压、高压、钢铁治金、石油、化工、电力等工业管道上作截断或调节介质流量用。该帆门采用三维偏心斜锥形阀座密封,蝶板密封采用新型金属片与弹性材料层叠而成,嵌装在蝶板上与阀座吻合。

利用蝶板摆动压紧密封,所以密封面摩擦阻力小,关闭时具有越关越紧功能,这样密封性可靠,开启确保密封面完全脱离接触,保证了密封面不受损伤。该蝶阀结构特点排除了其他类型蝶阀开过位而不能密封的缺点,且在高曙下能正常使用,克服了其它类型阀门在高温使用时因热膨胀而容易泄漏的缺点。该蝶阀耕具使用介质要求,选用不同密封面材料,以保证密封面耐磨损、耐腐蚀、使用寿命长。

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