55°圓柱管螺紋的型式和尺寸

1、55。圓柱管螺紋的型式和尺寸PBSPP/BSPF(JISPF)BritishPipeThread(惠氏管螺紋)-圓柱(BSPP/BSPF)螺紋代號(hào)基本尺寸大徑mmd=D螺距mmP每英寸牙數(shù)tpi中徑mmd2=D2小徑外螺紋d3牙型高度H1底孔尺寸mmG1/81/89.7280.907289.1478.5660.5818.7G1/41/413.1571.3371912.30111.4450.85611.6G3/83/816.6621.3371915.80614.950.85615G1/21/220.9551.8141419.79318.6311.16219G5/85/822.9111.81414

2、21.74920.5871.16220.75G3/43/426.4411.8141425.27924.1171.16224.5G刀87/830.2011.8141429.03927.8771.16228G1133.2492.3091131.7730.2911.47930.5G11/811/837.8972.3091136.41834.9391.47935G11/411/441.912.3091140.43138.9521.47939.5G13/813/844.3232.3091142.84441.3651.47941.5G11/211/247.8032.3091146.32444.8451.4

3、7945G13/413/453.7462.3091152.26750.7881.47951G2259.6142.3091158.13556.6561.47957G21/421/465.712.3091164.23162.7521.47963G21/221/275.1842.3091173.70572.2261.47972.5G23/423/481.5342.3091180.05578.5761.47979G3387.8842.3091186.40584.9261.47985.G31/431/493.982.3091192.50191.0221.47991G31/231/2100.332.309

4、1198.35197.3721.47997.75G33/433/4106.682.30911105.201103.7221.479104G44113.032.30911111.55110.0721.479110.5G41/241/2125.732.30911124.251122.7721.479123G55138.432.30911136.951135.4721.479136G51/251/2151.132.30911149.651148.1721.479148.5G66163.832.30911162.351160.8721.479161.555。圓錐管螺紋型式和尺寸BSPT(JISPT)5

5、5。圓錐管螺紋(BSPT)螺紋代號(hào)基本尺寸英寸大徑mmd=D螺距mmP每英寸牙數(shù)tpi中徑mmd2=D2小徑外螺紋d3牙型高度H1圓弧尺寸r底孔尺寸mmR1/161/167.7230.907287.1426.5610.5810.1256.4R1/81/89.7280.907289.1478.5660.5810.1258.4R1/41/413.1571.3371912.30111.4450.8560.18411.2R3/83/816.6621.3371915.80614.9500.8560.18414.75R1/21/220.9551.8141419.79318.6311.1620.24918.

6、25R3/43/426.4411.8141425.27924.1171.1620.24923.75R1133.2492.3091131.7730.2911.4790.31730R11/411/441.9102.3091140.43138.9521.4790.31738.5R11/211/247.8032.3091146.32444.8451.4790.31744.5R2259.6142.3091158.13556.6561.4790.31756R21/221/275.1842.3091173.70572.2261.4790.31771R3387.8842.3091186.40584.9261.

7、4790.31785.5R44113.0302.30911111.551110.0721.4790.317110.5R55138.4302.30911136.951135.4721.4790.317136R66163.8302.30911162.351160.8721.4790.317161.5管螺紋的基本尺寸表（3-29）Gl/2、ZG1/2、表（3-29）螺紋基本尺寸（單位:mm）尺寸代號(hào)每25.4mm類的牙數(shù)n螺距p牙型咼度h圓弧半徑r基面上的基本直徑基準(zhǔn)距離有效螺紋長(zhǎng)度大徑（基準(zhǔn)直徑）d=D中徑d2=D2小徑d1=D11/16280.9070.5810.1257.7237.1426.5

8、614.06.51/8280.9070.5810.1259.7289.1478.5664.06.51/4191.3370.5860.18413.15712.30111.4456.09.73/8191.3370.5860.18416.66215.80614.9506.410.11/2141.8141.1620.24920.95519.79318.6318.213.23/4141.8141.1620.24926.44125.27924.1179.514.51112.3091.4790.31733.24931.77030.29110.416.81.1/4112.3091.4790.31741.910

9、40.43138.95212.719.11.1/2112.3091.4790.31747.80346.32444.84512.719.12112.3091.4790.31759.61458.13556.65615.923.42.1/2112.3091.4790.31775.18473.70572.22617.526.73112.3091.4790.31787.88486.40584.92620.629.83.1/2112.3091.4790.317100.33098.85197.37222.231.44112.3091.4790.317113.030111.551110.07225.435.8

10、5112.3091.4790.317138.430136.951135.47228.640.16112.3091.4790.317163.830162.351160.87228.640.1錐管螺紋的基本尺寸表（3-28）1/2PT、1/2NPT、表（3-28）螺紋基本尺寸（單位:mm）尺寸代號(hào)每25.4mm類的牙數(shù)n基面上的基本直徑基準(zhǔn)距離大徑（基準(zhǔn)直徑）d=D中徑d2=D2小徑d1=D11/16277.8957.1426.3894.0641/82710.2429.4898.7364.1021/41813.61612.48711.3585.7863/81817.05515.92614.7976

11、.0961/21421.22319.77218.3218.1283/41426.56825.11723.6668.611111.533.22831.46129.69410.1601.1/411.541.98540.21838.45110.6681.1/211.548.05446.28744.52010.668211.560.09258.32556.55811.0742.1/2872.69970.15967.61917.3233888.60886.06883.52819.4563.1/28101.31698.77696.23620.85348113.973111.433108.893121.43

12、8螺紋-各國(guó)的不同標(biāo)記方法一.用螺紋密封的管螺紋（GB7306與ISO7/1相同）用螺紋密封的管螺紋不加填料或密封質(zhì)就能防止?jié)B漏。用螺紋密封的管螺紋有圓柱內(nèi)螺紋和圓錐外螺紋、圓錐內(nèi)螺紋和圓錐外螺紋兩種連接形式。壓力在5x105Pa以下時(shí)，用前一種連接已足夠緊密，后一種連接通常只在高溫及高壓下采用。用螺紋密封的管螺紋內(nèi)螺紋有圓錐、圓柱兩種形式。外螺紋只有圓錐一種形式。牙型如下：錐度1：16，牙形角55，舊螺紋標(biāo)準(zhǔn)示例：ZG3/8；標(biāo)記示例：圓錐內(nèi)螺紋Rc3/8圓柱內(nèi)螺紋Rp3/8圓錐外螺紋R3/8當(dāng)螺紋為左旋螺紋時(shí)Rc3/8-LH（LH表示左旋螺紋）Rp1/2-DIN299R1/2DIN2999

13、GB7306規(guī)定的標(biāo)記方法與ISO7/1的規(guī)定是一樣的。在ISO7/1作出統(tǒng)一之前，標(biāo)準(zhǔn)號(hào)螺紋種類圓錐內(nèi)螺紋圓柱內(nèi)螺紋圓錐外螺紋ISOISO7/1-1982Rc1/2Rp1/2R1/2英國(guó)BS21-1973Rc1/2Rp1/2R1/2法國(guó)NFE03-004G1/2JG1/2各國(guó)的標(biāo)記方法如下：德國(guó)DIN2999日本JIS130203PT1/2PS1/2PT1/2蘇聯(lián)rOCT6211KTPYBl/2KTPYB1/2GBGB133-74ZG1/2ZG1/2二非螺紋密封的管螺紋（GB7307）該螺紋標(biāo)準(zhǔn)與ISO228/1相同。牙型角：55，錐度：1：16。3.標(biāo)記示例：11/2左旋內(nèi)螺紋G11/2-

14、LH（右旋不標(biāo)）11/2A級(jí)外螺紋G11/2A11/2B級(jí)外螺紋G11/2B內(nèi)外螺紋裝配G11/2/G11/2A4用途：非螺紋密封的管螺紋主要用于壓力較低的不、煤氣管道，連接時(shí)就加填料或密封質(zhì)（麻絲、鉛丹、聚四氟乙烯膠帶等），以防止?jié)B漏。5非螺紋密封的管螺紋與用螺紋密封的管螺紋相同點(diǎn)是：兩者牙型一樣均為55，相同規(guī)格螺紋的螺距、牙高、基本直徑相同。6.非螺紋密封的管螺紋與用螺紋密封的管螺紋不同點(diǎn)是：用螺紋密封的管螺紋內(nèi)螺紋有圓柱螺紋和圓錐螺紋兩種形式，外螺紋只有圓錐螺紋一種形式。非螺紋密封的管螺紋不論內(nèi)外螺紋都只有圓柱螺紋一種形式。兩種螺紋部分規(guī)格的公差不同。非螺紋密封的內(nèi)圓柱管螺紋可以和用螺

15、紋密封的外圓錐管螺紋相連接，但非螺紋密封的外圓柱管螺紋卻不可以和用螺紋密封的內(nèi)管螺紋形成用螺紋密封的連接。各國(guó)的不同標(biāo)記方法：標(biāo)準(zhǔn)號(hào)螺紋種類圓柱內(nèi)螺紋圓柱外螺紋ISOISO228/1-1982G1/2G1/2AB英國(guó)BS2779-1973法國(guó)NFE03-005德國(guó)DIN259日本JIS130202蘇聯(lián)OCT6357GBGB133-74G1/2G1/2R1/2PF1/2ABTPYB1/2心2Kn3G1/2G1/2ABHG1/2ABK1/2PF1/2ABTPYB1/2Kn2Kn3G1/2各國(guó)常用螺紋及其代號(hào)螺紋是應(yīng)用非常廣泛的緊固件，按螺距大小分為粗牙和細(xì)牙；按旋向分為左旋和右旋；按線數(shù)分為單線與

16、多線；按用途分，可分為聯(lián)接螺紋、傳動(dòng)螺紋和承載螺紋三種。目前國(guó)際交往日益增多，備品備件的國(guó)產(chǎn)化也愈來(lái)愈多。目前主要存在的問(wèn)題有：將美國(guó)英制螺紋1/2的螺距每英寸為13牙,誤為與英國(guó)英制1/2每英寸為12牙;將錐管螺紋R的牙型角a=55。與a=60錐管螺紋NPT牙型角60昆用，導(dǎo)致無(wú)法聯(lián)接及泄漏。以下將各國(guó)常用螺紋及其他代號(hào)作一簡(jiǎn)介。中國(guó)常用螺紋及代號(hào)中國(guó)常用螺紋及代號(hào)見(jiàn)表1所示。表1中國(guó)常用螺統(tǒng)陲代號(hào)名稱標(biāo)淮號(hào)代號(hào)標(biāo)惟示例備注普通轍皺GBrT192197-19?lMNIW（懸,Ml庁汽1衛(wèi)細(xì)牙）牙型角cc=50矩形螺紋無(wú)標(biāo)桂X螺距方形如燈梯我蛭頓GBrT5?36.1796.41?g9TM0歲7

17、牙型角圧=卻-鋸齒螺紋GE?T13576.M357Ai992B牙型角a=2管，蛭管聯(lián)接用細(xì)丈同晉通蛭紋MM2O1.5牙型角cc=50非螺紋密封的筒甥紋GBa7-2001aG3/4LH-左施（右癥不標(biāo)）牙型角cc-55n用螺紋艷封的錐莒鐳紋GB)Ta6.U7306.2-2000RR3/4牙型常-5r【老代號(hào)対云E）60-圓錐莒揺魏(j&rn2716-1991NPTNPT3/4牙型角cc=50B（老代號(hào)肯X）GBm41-5-1992ZM-ZM10-標(biāo)準(zhǔn)萃苗牙型角a=60英國(guó)標(biāo)準(zhǔn)螺紋及代號(hào)英國(guó)標(biāo)準(zhǔn)螺紋及代號(hào)見(jiàn)表2所示。茗稱標(biāo)誰(shuí)號(hào)代號(hào)標(biāo)誰(shuí)示例笛注惠氏標(biāo)港螺紋(VMworththiea.di-.0S84

18、195SBSW牙BSF細(xì)牙牙/in3T8BSF-20牙/in牙型ffi=a=55n英國(guó)BA螺紋BSP3-1P51012牙型角=47.5表2孑編代號(hào)美國(guó)標(biāo)準(zhǔn)螺紋及代號(hào)美國(guó)標(biāo)準(zhǔn)螺紋及代號(hào)見(jiàn)表3所示。表3美國(guó)標(biāo)灌螺磁代號(hào)標(biāo)范號(hào)代號(hào)及示例牙型曲ASA-BII1549分四類：蹶(UN。N.細(xì)牙(UNF,NF.特細(xì)牙(UlNEJF)特種牙12N,18N)乂以每英寸牙數(shù)命名cc=aANHEI11982UNUNR(牙底為磁*=眇55英制恵氏螺紋厝以下每英寸牙數(shù)與英國(guó)恵氏蝮紋栢同1/r為止牙，V及嚴(yán)以上每英寸牙馥均対g牙沒(méi)有i/r、勅聲、5/16、7“曠g曲、11/16等規(guī)格ANSIBI204-1P76NPTF

19、密封錐管幌縱如NPTF1/S27牙cc=50aUSASB;2-26S.NPT,NPTC,NPTRcc=60aUSASB226&NPTF,PTFSAEcc=50nANSIB11P74B13-1197fS米制幌散匕I13Mcc=50n日本標(biāo)準(zhǔn)螺紋及代號(hào)日本標(biāo)準(zhǔn)螺紋及代號(hào)見(jiàn)表4所示。表4日本標(biāo)推螺馭代號(hào)代號(hào)標(biāo)準(zhǔn)示例標(biāo)準(zhǔn)目MMidJISB0205細(xì)聞螺統(tǒng)MJISB0207UNC3/SL6UNCJISB0206細(xì)牙恵氏蝮紋1JNFNO摂一並UNFJISBOJO:孔梯冊(cè)螺紋TMTM20JISB0221勺y梯形蝮絞TMM20”JISB022355密封管幌紋-鏈螺険P(yáng)TPT3/4JISB0203柱螺姿PSPS

20、3/4喊韭密封管爐紋PFPF1/2JISB0302專電線舊管用螺紋CC15JISB0204自行車用螺級(jí)通用鬲條用:BCB03/4JISBOS縫紉機(jī)用蝮紋,SMSM1/4牙40JISB0226燈口螺紋EEl。JISC7709汽車輪胎汽門(mén)螺統(tǒng)；TV；TVS:JISD4208自行車輪胎汽門(mén)螺紋CTV,：養(yǎng)TVS牙30JSD942：2螺紋代號(hào)ThreadCode一、英制螺紋（螺紋牙型角55度）ThreadofBritishstandard（Threadpitchshapeangle55BSW英國(guó)標(biāo)準(zhǔn)惠氏螺紋（粗牙）BritishStandardWhitworthThread（Coarse）BSF英國(guó)標(biāo)

21、準(zhǔn)惠氏螺紋（細(xì)牙）BritishStandardWhitworthThread（Fine）G直管螺紋（外螺紋分A、B兩面級(jí)、絲錐分G、GD）Straightpipethread（Outside）threadinAB:tapsinG、GD）R錐管外螺紋（舊代號(hào)ZG;KG）Outsidepaperpipethread（OldthreadcodeZG,KG）RC錐管內(nèi)螺紋（舊代號(hào)ZG;KG）Insidetaperpipethread（OldthreadcodeZG,KG）二、美制螺紋（螺紋牙型角60度）ThreadofAmericanstandard（Threadpitchshapeangle60UNC統(tǒng)一制粗牙螺紋（代替NC）Unifiedcoarsepitchthread（InsteadofNC）UNF統(tǒng)一制細(xì)牙螺紋（代替NF）Unifiedfinepitchthr