11范圍本標(biāo)準(zhǔn)規(guī)定了法蘭連接閥門的結(jié)構(gòu)長度、焊接端閥門的結(jié)構(gòu)長度、對夾連接閥門的結(jié)構(gòu)長度、內(nèi)螺紋連接閥門結(jié)構(gòu)長度、外螺紋連接閥門結(jié)構(gòu)長度，及其結(jié)構(gòu)尺寸的極限偏差。本標(biāo)準(zhǔn)適用于公稱壓力PN420MPA，公稱通徑DN3MMDN4000MM的閘閥、截止閥、球閥、蝶閥、旋塞閥、隔膜閥、止回閥等的結(jié)構(gòu)長度。2規(guī)范性引用文件下列文件中的條款通過本標(biāo)準(zhǔn)的引用而成為本標(biāo)準(zhǔn)的條款。凡是注日期的引用文件，其隨后所有的修改單（不包括勘誤的內(nèi)容）或修訂版均不適用于本標(biāo)準(zhǔn)，然而，鼓勵根據(jù)本標(biāo)準(zhǔn)達(dá)成協(xié)議的各方研究是否可使用這些文件的最新版本。GB/T1047管道元件DN（公稱尺寸）的定義和選用（GB/T10472005，ISO67081995，MOD）GB/T1048管道元件PN（公稱壓力）的定義和選用（GB/T10482005，ISO72681996，MOD）3術(shù)語31直通式閥門結(jié)構(gòu)長度THROUGHWAYTYPEOFVALVESFACETOFACE，ENDTOEND,CENTERTOFACEANDCENTERTOENDDIMENSIONS在閥體通道終端兩個垂直于閥門軸線平面之間的距離。32角式閥門結(jié)構(gòu)長度ANGLETYPEOFVALVESFACETOFACE，ENDTOEND，CENTERTOFACEANDCENTERTOENDDIMENSIONS在閥體通道某一端垂直于軸線的平面與閥體另一終端軸線之間的距離。33對夾式閥門WAFERTYPEVALVES靠管道法蘭夾持固定密封結(jié)構(gòu)的閥門。其結(jié)構(gòu)長度指閥體通道終端兩個與管道法蘭接觸面之間的距離。20050221發(fā)布20050801實施中華人民共和國國家標(biāo)準(zhǔn)金屬閥門結(jié)構(gòu)長度METALVALVESFACETOFACE，ENDTOEND，CENTERTOFACEANDCENTERTOENDDIMENSIONS（ISO57521982，METALVALVESFORUSEINFLANGEDPIPESYSTEMSFACETOFACEANDCENTERTOFACEDIMENSIONS，MOD）GB/T122212005代替GB/T122211989，GB/T1518811518841994中華人民共和國國家質(zhì)量監(jiān)督檢驗檢疫總局中國國家標(biāo)準(zhǔn)化管理委員會發(fā)布GB/T12221200524結(jié)構(gòu)長度尺寸與極限偏差41公稱通徑數(shù)值按GB/T1047的規(guī)定；公稱壓力數(shù)值按CB/T1048的規(guī)定。42直通式閥門結(jié)構(gòu)長度如圖L所示；角式閥門結(jié)構(gòu)長度如圖2所示；對夾連接閥門結(jié)構(gòu)長度如圖3所示。43結(jié)構(gòu)長度尺寸431法蘭連接閥門結(jié)構(gòu)長度基本系列見表1。圖1直通式閥門結(jié)構(gòu)長度圖2角式閥門結(jié)構(gòu)長度圖3對夾連接閥門結(jié)構(gòu)長度中心面結(jié)構(gòu)長度中心面結(jié)構(gòu)長度面面結(jié)構(gòu)長度LLLLLLLLGB/T1222120053表1法蘭連接閥門結(jié)構(gòu)長度基本系列單位為毫米基本系列代號1234578A9A1011A12131415181921222324A公稱通徑DN結(jié)構(gòu)長度101302101021088510513080151302101081401651089010510857130801521708320150230117152190117951151176413090178190952516023012716521612710011512770140120100216210108321802601401782291461051301407616514011022923011440200260165190241159115130165821651061402401202412601215023030017821629219012515020310220310815025013521626725030014665290340190241330216145170216108222112170270165241292280340165803103802032833562541551902411212411141802801852833183103901781003504302293054323051752152921463051271903003053563504502161254005002543815083562002503301783561402003253814004005252541504805502674035594062252753562033941402103504034444506002792006006502924196605212753254952484571522304004195335507503302507307753304577876353256223115331652504504576226503943008509003565028387493756983506101782705005027117504193509801025381762889425787394686190290550572838850400110011504068389914759144577622163106006108649504501200127543291410929788642223306506609781050500125014004579911194978914229350700711101611506001450165050811431397129510672673908007871346135070016506101346154914482924309001499145080018506601956318470100017781650900205071119563305101100208310002250811410550120012004706301400530710160060079018006708702000760950220080010002400850110026009001200280095013003000100014003200110034001200360012003800120040001300注1代號系列注上角標(biāo)A的為角式閥門的結(jié)構(gòu)長度，未注上角標(biāo)的為直通式的結(jié)構(gòu)長度。注2結(jié)構(gòu)長度的極限偏差見表21。GB/T1222120054432直通式焊接端閥門結(jié)構(gòu)長度基本長度系列見表2。表2直通式焊接端閥門結(jié)構(gòu)長度基本系列單位為毫米基本系列代號H1H2H3H4H5H6H7H8H9H10H11H12H13H14H15H16H17H18H19H20H21公稱通徑DN結(jié)構(gòu)長度610102102151081401651652162641081401521401402011715219019022922927311715217815215225127165216133216140254140254186308127165203216165190321401782291462291652791652793491401842162291784016519024115224117830517830523238416520322924119019024150216216292178292216368216368279451203229267267216216230267283652412413302163302544192544193305082162792922922412412903053308028328335625435630538130547036857824131831831828328331033038710030530540630543235645740654645767329236835635630530535035645755912538138145738150843255948367353379435640040038140038115040340349545755950861055970561091440647044444440345748045755971120041941959758466066073771183276210224955975595334195216005216868452504574576737117877878388649919141270622673622622457559730559826889300502502762813838914965991113010411422698775711711502635850635965101635057276282688988999110291067125711187878385727629807624006108389029919911092113011941384124591486461083811008384506609149781092109212191346153713979786609149145007119911054119411941321147316649781016711991991550762109211431295106711181092109260081311431232139713971549194381311431143650864124513081448129513461245124570013461397154914481499134613467509141397152416511524159413971397800965152416511778152415248501626177819301626162690010161727188020831996208317271727注結(jié)構(gòu)長度極限偏差見表22。GB/T1222120055433角式焊接端閥門結(jié)構(gòu)長度基本系列見表3。表3角式焊接端閥門結(jié)構(gòu)長度基本系列單位為毫米基本系列代號H22H23H24H25H26H27H28H29H30公稱通徑DN結(jié)構(gòu)長度6105115577683831081322064899595114114137257010210810812712715432761081141141401401754083114121121152152192501021331461081461841842256510814616512716521021025480121159178152178152190235289100146178203178216178229273337125178200229216254216279336397150203222248254279254305352457200248279298330330368416511250311311337394394419495635300349356381419457483565711350394495514629400457660450483737500826550600991650700750800850900注結(jié)構(gòu)長度極限偏差見表22。GB/T1222120056434對夾連接閥門結(jié)構(gòu)長度基本系列見表4。表4對夾連接閥門結(jié)構(gòu)長度基本系列單位為毫米基本系列代號J1J2J3J4J5J6J7J8J9J10J11J12J13J14J15J16J17J18公稱通徑DN結(jié)構(gòu)長度1060151625606520193152522355658032284080904033333154590115504343606060607070704056115140486546666666668346631401604040804649497373838386507116018010052566456737379791021021056080511256470649011050501505670767098981371371591591591061255720060717112712716116120620620614016060602506876891147614614621321324124825420070703008383181181229229292305305250708035078921271271842222732733563562807692400102102140190232305305384384804501141141401521602032643623624688912050012712717021929236836845153311490132550600154154178200222317394438495559114100132650700165229750305368460505800190900203241368483635635100021630012002543505246291400279390160031844018003564902000406540注尺寸極限偏差DN900為2MM，DN10002000為3MM。GB/T1222120057435內(nèi)螺紋連接閥門結(jié)構(gòu)長度基本系列見表5表5內(nèi)螺紋連接閥門結(jié)構(gòu)長度基本系列單位為毫米基本系列代號N1N2N3N4N5N6N7N8N9N10N11N12N13N14N15N16N17N18公稱通徑DN結(jié)構(gòu)長度6846481048505680808080808015425052566065656568809090909090909090204560606765707585789010010010010010010010010025526570787580901108611011512011012012011012012032557580888590105120100130130140120130140120140130406085861049510012014010615015017013514017013517015050709510412011011014016513017018020017017020015518017065821151201301652032201902608090130254250290100110145300注1適用于直通式和角式結(jié)構(gòu)。注2結(jié)構(gòu)長度的極限偏差為16MM436外螺紋連接閥門結(jié)構(gòu)長度基本系列見表6。表6外螺紋連接閥門結(jié)構(gòu)長度基本系列單位為毫米基本系列代號W1W2W3W4結(jié)構(gòu)長度公稱通徑DN直通式角式36708035401090100455015100110505520110130556525130140657032145160804015018090注結(jié)構(gòu)長度的極限偏差為16MMGB/T1222120058437法蘭連接閘閥結(jié)構(gòu)長度見表7。表7法蘭連接閘閥結(jié)構(gòu)長度單位為毫米公稱壓力PN/MPA10252550僅適用于25410631016結(jié)構(gòu)長度公稱通徑DN短長10102151081401401651702011715215219019025127165165216210321401781782292304016524019024019024126050178250216250216292250300651902702412702413302803408020328028328028335631039010022930030530030543235045012525432538132538150840052515026735040335040355945060020029240041940041966055075025033045045745045778765030035650050250050283875035038155076255057288985040040660083860061099195045043265091465066010921050500457700991700711119411506005088001143800787139713507006109001450800660100016509007111100100081112001200101514001080160013001800150020001675基本系列3154154/1952223注表中的黑體字表示的尺寸為優(yōu)先選用。GB/T1222120059438對夾連接刀形閘閥結(jié)構(gòu)長度見表8表8對夾連接刀形閘閥結(jié)構(gòu)長度單位為毫米公稱壓力PN20MPA公稱通徑DN結(jié)構(gòu)長度504865404080100511255050150572006060250707030070803507692400804508912050090600114100132基本系列J16J17J18注結(jié)構(gòu)長度的極限偏差為16MMGB/T12221200510439焊接端閘閥結(jié)構(gòu)長度見表9。表9焊接端閘閥結(jié)構(gòu)長度單位為毫米公稱壓力PN/MPA1020255063100150、160250320、420結(jié)構(gòu)長度公稱通徑DN短長短長短長短長6101021510814016516526420117152190190273251271652161332161402541402541863083214017822914622916527916527934940165190241152241178305178305232384502162162921782922163682163682794516524124133021633025441925441933050880283283356254356305381305470368578100305305406305432356457406546457673125381381457381508432559483673533794150403406495457559508610559705610914200419419597584660660737711832762102225045745767371178778783886499191412703005025027628138389149659911130104114223505727628268898899911029106712571118400610838902991991109211301194138412454506609149781092109212191346153713975007119911054119411941321147316645507621092114312956008131143123213971397154919436508641245130814487001346139715497509141397152416518009651524165117788501626177819309001016172718802083基本系列H1H2H3H4H5H6H7H8H9H10H11注結(jié)構(gòu)長度的偏差見表22。GB/T122212005114310蝶閥和蝶式止回閥結(jié)構(gòu)長度見表10。表10蝶閥和蝶式止回閥結(jié)構(gòu)長度單位為毫米雙法蘭連接結(jié)構(gòu)長度對夾式連接結(jié)構(gòu)長度公稱壓力PN/MPA20252540公稱通徑DN短長短中長40106140333350108150434365112170468011418046494910012719052566456125140200647064150140210567076702001522306071897125016525068767630017827083114833501902907892127127400216310102102140140450222330114114160500229350127127152170550600267390154154178200650700292430165229750800318470190900330510203200241100041055021630012004706302542763601400530710279390160060079031844018006708703564902000760950406540220080010005902400850110065026009001200700280095013007603000100014008103200110087034001200360012003800120040001300基本系列1314J1J2J3J2/J4注表中的黑體字表示的尺寸為優(yōu)先選用。GB/T122212005124311法蘭連接球閥和旋塞閥結(jié)構(gòu)長度見表11。表11法蘭連接球閥和旋塞閥結(jié)構(gòu)長度單位為毫米公稱壓力PN/MPA1025255063100結(jié)構(gòu)長度公稱通徑DN短中長短長B101021301301301510813013014013016520117130150152150190251271401601651602163214016518017818022940165165200190200241501782032302162302922926519022229024129033033080203241310283310356356100229305350305350406432125245356400381400508150267394480403480495559200292457600419502A600597660250330533730457568S730673787300356610850502648A85076283835038168698076298082688940040676211008381100902991450432864120091412009781092500457914125091912501054119460050810671450114314501232139770013971700基本系列31214155注1不適用于公稱通徑大于40MM以上的上裝式全通徑球閥以及公稱通徑大于300MM的旋塞閥和全通徑球閥。注2表中的黑體字表示的尺寸為優(yōu)先選用。A用于全通徑球閥。B僅適用于球閥。GB/T122212005134312焊接端球閥結(jié)構(gòu)長度見表12。表12焊接端球閥結(jié)構(gòu)長度單位為毫米公稱壓力PN/MPA10、16、2025、40、5063100150、160250320、420結(jié)構(gòu)長度公稱通徑DN短中長短中長短中長15140140165165201521521901902516516521621625432178178229229279401901901901902412413053055021621623021621623021623029229236836845165241241290241241290241290330330419419508802832833102832833102833103563563814705781003053053503053053503053504064324575466731253814003814003814005085596731504034574804034574804034804955596107059142004195216004195216004196005976607378321022250457559730457559730457730673787838991127030050263585050263585050285076283896511301422350572762980572762980762980826889102912574006108381100610838110083811009029911130138445066091466091497810921219500711991711991105411941321550109210921143129560081311438131143123213971549650124512451308144870013461346139715497501397139715241651800152415241651177885016261626177819309002083208318802083基本系列H16H17H18H16H17H18H2H18H3H5H7H9H11GB/T122212005144313焊接端旋塞閥結(jié)構(gòu)長度見表13。表13焊接端旋塞閥結(jié)構(gòu)長度單位為毫米公稱壓力PN/MPA102025、40、5063100150250320、420結(jié)構(gòu)長度公稱通徑DN短長短長151652019025190216216254254308322292292792793494024124124130530538450267267283292292368368451653053053303303304194195088033033038735635638147157810035635645740655943245754667312538138145750855967379415045745755949571155961070591420052152168659784566073783210222505595598266738897878389911270300635635965762101683896511301422350762826889125740083890299111301384450914978109215375009911054119413211664550109211431295600114312321397194365012451308144870013461397750139715241651800152416511778850162617781930900172718802083基本系列H19H19H20H3H21H5H7H9H11GB/T122212005154314法蘭連接截止閥、節(jié)流閥及止回閥結(jié)構(gòu)長度見表14表14法蘭連接截止閥門、節(jié)流閥及止回閥結(jié)構(gòu)長度單位為毫米公稱壓力PN/MPA1020255010010202563100直通式角式公稱通徑DN短長短長短長短長短長1013013085851510813015213016521057909083105201171501781501906495959525127160216160216230701001001081153214018022918022976105105114130401652002412002412608211511512113050203230267230292300102125125146150652162902922903303401081451451651708024131031831035638012115515517819010029235035635043243014617517521621512533040040040050850017820020025425015035648044448055955020322522527927520049560053360066065024827527533032525062273062273078777531132532539430069885071185083890035037537541935078798083898088910253944254254009141100864110099111504574754754509781200978120010921275483500500500978125010161250119414006001295145013461450139716507001448900A16501499165015498001000A18501778185090019561100A20502083205010001200A22502250基本系列101211521188249A僅適用于多辨旋啟式止回閥。GB/T122212005164315焊接端直通式截止閥、節(jié)流閥及止回閥結(jié)構(gòu)長度見表15。表15焊接端直通式截止閥、節(jié)流閥及止回閥結(jié)構(gòu)長度單位為毫米公稱壓力PN/MPA1020255063100150、160250320、420結(jié)構(gòu)長度公稱通徑DN短長AB短長短長短長短長6101021510814015214016516521626420117152178152190190229229273251271652032162161332162542543083214018421622922914622927927934940165203229241241152241305305384502032292672672921782923682163682794516521627929229233021633025441925441933050880241318318318356254356305381305470368578100292368356356406305432356457406546457673125356400400457381508432559483673533794150406470444444495457559508610559705610914200495597559533597584660660737711832762102225062267362262267371178778783886499191412703006987757117117328138389149659911130104114223507878388268899911029106712574009148649029911092113011941384450978978109212191537500978101310541194132116645501067111811431295600123213971549194365012951346130814487001448149913971600C7501524159415241651800208316518501778900199618802083基本系列H12H13H14H15H3H4H5H6H7H8H9H10H11A僅適用于截止閥、升降式止回閥。B僅適用于旋啟式止回閥。C此值與基本系列不同，僅適用于截止閥和止回閥。GB/T122212005174316焊接端角式截止閥、節(jié)流閥及止回閥結(jié)構(gòu)長度見表16。表16焊接端角式截止閥、節(jié)流閥及止回閥結(jié)構(gòu)長度單位為毫米公稱壓力PN/MPA1020255063100150、160250320420結(jié)構(gòu)長度公稱通徑DN短長短長610511557768383108132206489959511411413725701021081081271271543276108114114140140175408311412112115215219250102133146108146184184225651081461651271652102102548012115917815217815219023528910014617820317821617822927333712517820022921625421627933639715020322224825427925430535245720024827929833033036841651125031131133739439441949