本标准规定了管法兰用非金属平垫片的型式和尺寸

11范围本标准规定了管法兰用非金属平垫片的型式和尺寸。本标准适用于公称压力PN0.25～PN5.0MPa的平面、突面、凹凸面和榫槽面管法兰用非金属平垫片。2规范性引用文件下列文件中的条款通过本标准的引用而成为本标准的条款。凡是注日期的引用文件，其随后所有的修改单(不包括勘误的内容)或修订版均不适用于本标准，然而，鼓励根据本标准达成协议的各方研究是否可使用这些文件的最新版本。凡是不注日期的引用文件，其最新版本适用于本标准。GB/T9129管法兰用非金属平垫片技术条件3垫片的型式与尺寸3.1PN0.25、PN0.6、PN1.0、PN1.6和PN2.0MPa的平面密封面(代号为FF)管法兰用非金属平垫片的型式应符合图1的规定，尺寸应符合表1的规定。3.2PN0.25、PN0.6、PN1.0、PN1.6、PN2.0、PN4.0和PN5.0MPa的突面密封面(代号为RF)管法兰用非金属平垫片的型式应符合图2的规定，Ⅰ型垫片的尺寸应符合表2的规定，Ⅱ型垫片的尺寸应符合表3的规定。注：Ⅰ型垫片适用于通用型法兰密封面，Ⅱ型垫片适用于窄型法兰密封面。3.3PN1.6、PN2.5、PN4.0和PN5.0MPa的凹凸密封面(代号为MF)管法兰用非金属平垫片的型式应符合图2的规定，尺寸应符合表4的规定。3.4PN1.6、PN2.5、PN4.0和PN5.0MPa的榫槽密封面(代号为TG)管法兰用非金属平垫片的型式应符合图2的规定，尺寸应符合表5的规定。2003-04-29发布2003-12-01实施中华人民共和国国家标准管法兰用非金属平垫片尺寸Dimensionsofnon-metalliCflatgasketsforpipeflanges(ISO7483：1991，DimensionsofgasketsforusewithflangestoISO7005，MOD)GB/T9126—2003代替GB/T9126.1～9126.4—1988中华人民共和国国家质量监督检验检疫总局发布GB/T9126—20032图1图2diD0tn×LdiKD0tGB/T9126—20033表1平面管法兰用非金属平垫片尺寸单位为毫米公称通径DN垫片内径di公称压力PNMPa(bar)垫片厚度t0.25(2.5)0.6(6)1.0(10)1.6(16)2.0(20)垫片外径D0螺栓孔中心圆直径K螺栓孔径L螺栓孔数n垫片外径D0螺栓孔中心圆直径K螺栓孔径L螺栓孔数n垫片外径D0螺栓孔中心圆直径K螺栓孔径L螺栓孔数n垫片外径D0螺栓孔中心圆直径K螺栓孔径L螺栓孔数n垫片外径D0螺栓孔中心圆直径K螺栓孔径L螺栓孔数n1018使用PN0.6MPa的尺寸7550114使用PN1.6MPa的尺寸9060144—1.5～31522805511495651449060.5164202790651141057514410070.01642534100751141158514411079.516432431209014414010018412089.0164404913010014415011018413098.01645061140110144165125184150120.51846577a160130144185145188180139.51848089190150184200160188190152.5184100115210170184220180188230190.5188125141240200188250210188255216.0228150169265225188285240228280241.52282002203202801883402952283402952212345298.5228250273375335181239535022124053552612405362.02612300324440395221244540022124604102612485432.02612350356490445221250546022165204702616535476.029.512400407540495221656551526165805253016600540.029.516450458595550221661556526206405853020635578.032.516500508645600222067062026207156503320700635.032.520600610——78072530228407703620815749.535.52070071289584030249108403624—8008131015950332410259503924900915111510503328112510503928100010161230116036281255117042281200122014551380393214851390483214001420167515904236168515904836160016201915182048401930182055401800182021152020484421302020554420002020232522304848234522306048a当PN为2.0MPa、DN为65mm时，垫片内径di为73mm。GB/T9126—20034表2Ⅰ型突面管法兰用非金属平垫片尺寸单位为毫米公称通径DN垫片内径di公称压力PNMPa(bar)垫片厚度t0.25(2.5)0.6(6)1.0(10)1.6(16)2.0(20)2.5(25)4.0(40)5.0(50)垫片外径D01018使用PN0.6MPa的尺寸39使用PN4.0MPa的尺寸使用PN4.0MPa的尺寸—使用PN4.0MPa的尺寸46—1.5～315224446.55152.520275456.06164.525346465.57171.032437675.08280.540498684.59294.5506196102.5107109.06577a116121.5127129.08089132134.5142148.5100115152162162172.5168180.0125141182192192196.0194215，0150169207218218221.5224250.0200220262273273278.5284290306.0250273317328329338.0340352360.5300324373378384408.0400417421.0350356423438444449.0457474484.5400407473489495513.0514546538.5450458528539555548.0564571595.5500508578594617605.0624628653.0600610679695734716.5731774774.0700712784810804—833——80081389091791194290091599010171011104210001016109011241128115412001220129013071341134213651400142014901524154815421580160016201700172417721765180018001820190019311972196520022000202021002138218221702232a当PN为2.0和5.0MPa、DN为65mm时。垫片内径di为73mm。GB/T9126—20035表3Ⅱ型突面管法兰用非金属平垫片尺寸单位为毫米公称通径DN垫片内径di公称压力PNMPa(bar)垫片厚度t2.0(20)5.0(50)垫片外径D0152545.551.50.8203355.063.0253864.570.0324874.079.0405483.093.05073101107658612012780108133147100132171178125160194213150190220248200238276304250286336358300343406419350375446482400425511536450489546593500533603651600641713771GB/T9126—20036表4凹凸面管法兰用非金属平垫片尺寸单位为毫米公称通径DN垫片内径di公称压力PNMPa(bar)垫片厚度t1.6(16)2.5(25)4.0(40)5.0(50)垫片外径D01018使用PN4.0MPa的尺寸使用PN4.0MPa的尺寸34—0.8～315223935.020275043.025345751.032436563.540497573.050618792.06577a109105.08089120127.0100115149157.0125141175186.0150169203216.0200220259270.0250273312324.0300324363381.0350356421413.0400407473470.0450458523533.0500508575584.0600610675692.0700712使用PN2.5MPa的尺寸777—1.5～3800813882900915987100010161092a当PN为5.0MPa、DN为65mm时，垫片内径di为73mm。GB/T9126—20037表5榫槽面管法兰用非金属平垫片尺寸单位为毫米公称通径DN公称压力PNMPa(bar)垫片厚度t1.6(16)2.5(25)4.0(40)5.0(50)1.6(16)2.5(25)4.0(40)5.0(50)垫片内径di垫片外径D01024—使用PN4.0MPa的尺寸使用PN4.0MPa的尺寸34—0.8～3152925.53935.0203633.55043.0254338.05751.0325147.56563.5406154.07573.0507373.08792.0659585.5109105.080106108.0120127.0100129132.0149157.0125155160.5175186.0150183190.5203216.0200239238.0259270.0250292286.0312324.0300343343.0363381.0350395374.5421413.0400447425.5473470.0450497489.0523533.0500549533.5575584.0600649641.3675692.0700751—使用PN2.5MPa的尺寸777——1.5～3800856882900961987100010611092GB/T9126—200384技术要求垫片的技术要求应符合GB/T9129的规定。5标记5.1标记方式垫片标准编号公称压力(按bar的数值标记)公称通径法兰密封面代号注：突面管法兰用Ⅱ型非金属平垫片，标记时应注明“Ⅱ型”；用“Ⅰ型”垫片时，不做特殊标记。5.2标记示例a)公称通径50mm，公称压力1.0MPa的平面管法兰用非金属平垫片，其标记为：非金属平垫FFDN50-PN10GB/T9126b)公称通径65mm，公称压力1.0MPa的突面(Ⅱ型)管法兰用非金属平垫片，其标记为：非金属平垫RF(Ⅱ型)DN65-PN10GB/T9126-