国标法兰标准尺寸

中国JB法兰尺寸凸面整体铸钢管法兰(JB/T79.1-94)图1凸面整体铸钢管法兰PN1.6MPamm卜称通径DN连接尺寸爸封面尺寸法兰厚度C法兰颈法兰外径D系列1/系列2螺栓孔中心圆直径K螺栓孔直径L系列1/系列2数量n双头螺柱螺纹Th.系列1/系列2dfNma>SmaxR159565144M1245214391242010575144M12552144412T42511585144M12652144912432140/135100184M16782165612440150/145110184M16853166412T450165/160125184M161003167412565185/180145184M161203189515\580200/195160188M16135320110155100220/215180188M16155320130155125250/245210<,/TD>188M16185322161186150285/280240238M20210324186186(175)310270238M2024032621520:6200340/3352952312M20265326240206r(225)3653252312M2029532626922T625040535526/2512M24/M2232033029824T830046041026/2512M24/M22375430348248PN2.5MPamm。称通径DN连接尺寸爸封面尺寸法兰厚度C法兰颈法兰外径D系列1/系列2螺栓孔中心圆直径K螺栓孔直径L系列1/系列2数量n螺栓、螺柱螺纹Th.系列1/系列2dfNmaXSmaxR15n9565144M1245216391242010575144M1255216441252511585144M126521649125「321140/135100184M167821862155匚40□150/145110184M16853187015550165/160125184M161003208015565185/180145188M1612032210118680[200/195160188M16135322116186100230190238M2016032413618612527022026/258M24/M2218832816922815030025026/258M24/M22218330198248(175)33028026/2512M24/M2224833222324820036031026/2512M24/M22278334252268「(225)3953403012M27302336281288250f4253703012M2733233630628103004854303016M273904403603010PN4.0MPamm卜称通径DN连接尺寸爸封面尺寸法兰厚度C法兰颈法兰外径D系列1/系列2螺栓孔中心圆直径K螺栓孔直径L系列1/系列2螺栓、螺柱dfNma>SmaxR数量n螺纹Th.系列1/系列215二9565144M1245216391242010575144M1255216441252511585144M12652164912532140/135100184M16782186215540150/145110184M16853187015550165/160125184M161003208015565185/180145188M16120322101186「80二200/19516018「8M1613532211618611001235/230190238M2016032414020612527022026/258M24/M22188328169228150I30025026/258M24/M22218330198248(175)3502953012M2725833423128102003753203012M272823382562810r(225)—4153553412M303153402853010「250450/4453853412M303453423143210300515/5104503416M304084463683412注：系列1法兰连接尺寸与国标及德国法兰标准尺寸互换；系列2尺寸与原机标准法兰尺寸互换；新产品设计应优先采用系列1尺寸。2.凹凸面整体铸钢管法兰(JB/T79.2-94)图2凹凸面整体铸钢管法兰mmPN4.0MPamm公称通径DN连接尺寸密封面尺寸法兰厚度C法兰颈法兰外径D系列1/系列2螺栓孔中心圆直径K螺栓孔直径L系列1/系列2数量n双头螺柱螺纹Th.系列1/系列2dX系列1/系列2Y系列1/系列2ff1f2Nma】xSmaxR15d9565144M1245394024163912420二10575144M125550512416441252511585144M1265575824164912532「140/135100184M1678656624186215540二150/145110184M1685757634187015550165/160125184M16100878834208015565185/180145188M16120109110342210118680200/195160188M161351201213422116186100235/230190238M2016014915034.52414020612527022026/258M2418817517634.52816922815030025026/258M24/M2221820320434.53019824[8(175)3502953012M2725823323434.53423128102003753203012M2728225926034.5382562810(225)4153553412M3031528628734.5402853010250450/4453853412M3034531231334.5423143210300515/5104503416M3040836336444.5463683412PN6.3MPamm公称通径DN连接尺寸密封面尺寸法兰厚度C法兰颈法兰外径D系列1/系列2螺栓孔中心圆直径K螺栓孔直径L系列1/系列21数重n双头螺柱螺纹Th.系列1/系列2dX系列1/系列2Y系列1/系列2ff;、f2NmaX5maxR1510575144M12匚55394024184515420130/12590184」M16168505124205216525140/135100184M16178575824226118532155/150110234M20二826566242468185「40170/165125234M2095757634248020550180/175135234M20105878834269020565205/200160238M20130109110342811123680215/210170238M20140120121343012824610025020026/258M24/M2216814915034.532152266125295240308M2720217517634.536181288150345/340280348M3024020320434.538210308(175)3703103412M3027023323434.542239321020040534536/3412M33/M3030025926034.5442683410(225)43037036/3412M33/M3032528628734.5463013810「25047040036/4112M33/M3635231231334.548326381030053046036/4116M33/M3641236336444.5543844212PN10.0MPamm公称通径DN连接尺寸密封面尺寸法兰厚度C法兰颈］法兰外径D系列1/系列2螺栓孔中心圆直径K螺栓孔直径L系列1/系列2双头螺柱dX系列1/系列2Y系列1/系列2ff；、f2Nma>8maxR数重n螺纹Th.系列1/系列21510575144M1255394024204515420130/12590184M166850「51"124225417425140/135100184M1678575824246118432155/150110234M2082656624246818440170/165125234]M209575763426802045019514526/254M24/M221128788'^289422465J220117026/258M24/M221138109110134321152558023018026/258M24/M221481201213434132265100265210308M2717214915034.538160305「125315/310250348M3021017517634.542189326150355/3502903412M3025020320434.546222366(175)3803203412M3028023323434.54825138820043036036/4112M33/M36312〔25926034.554284428(225)4704004112M3635228628734.556313448250505/5004304112M3638231231334.56034648830058550042/4816M39/M4244236336444.5704085410PN16.0MPamm引通：径DN连接尺寸密封面尺寸法兰厚度C法兰颈法兰外径D系列1/系列2螺栓孔中心圆直径K螺栓孔直径L系列1/系列2双头螺柱dX系列2丫系1列2NmaX5maxR数量n螺纹Th.系列1/系列21511075184PM16523940:2424491742013090234M20625051:24265819425140100234M2072575824286520432165115254P^M22856566124307622540175125274PM24927576:34328824550215165258匚M221328788343610226565245190308M27152109110344413133880260205308M2716812012134146148348100300240348M3020014915034.548172368125355285418—M3623817517634.56021344101503903184112M3627020320434.5662464810(175)4603804812M4232523323434.57428756102004804004812M4234525926034.5:783165810(225)5454505412「M48390286[28734.58234560102505804855412M4842531231334.58837864103006655705416一M48510363364，44.51004527610PN20.0MPamm公称通径DN连接尺寸密封面尺寸法兰厚度C法兰颈法兰外径D系列2螺栓孔中心圆直径K螺栓孔直径L系列2双头螺柱dX系列2Y系列2ff1、f2Nma>8maxR数量n螺纹Th.系列1/系列21512082234:M205527282526511852013090234M2062343525286020525150102254M2272414225306721532160115二254M2285495025327823540170124274M24905556353490255「50210160258M221286970354010829565260203308M27165969735I4813736880290230348M301901151163554160408100360292418M3624513713836I662045281253853184112M36270169170367623756101504403604812M42305189190361822706010(175)4753944812M42340213214368430163102005354405412M4838024424536923407010(225)5804835812M5241826726836I10037776102506705725816M52508318319361104489410注：31〜35中系列1法兰连接尺寸与国标及德国法兰标准尺寸互换，系列2尺寸与原机标法兰尺寸互换；新产品设计优先采用系列1尺寸。