1、精選英制管螺紋基本尺寸及公差（牙形角55º） BSPP螺紋代號基本直徑內螺紋外螺紋大徑中徑小徑中徑公差小徑公差A級B級中徑公差大徑公差中徑公差大徑公差G1/8×289.7289.1478.566+0.170+0.28200-0.1070-0.2140-0.2140-0.214G1/4×1913.15712.30111.445+0.125+0.445-0.125-0.250-0.2500-0.250G3/8×1916.66215.80614.950+0.1250+0.44500-0.1250-0.2500-0.2500-0.250G1/2×142

2、0.95519.79318.631+0.1420+0.54100-0.1420-0.2840-0.2840-0.284G5/8×1422.91121.74920.587+0.1420+0.54100-0.1420-0.2840-0.2840-0.284G3/4×1426.44125.27924.117+0.1420+0.54100-0.1420-0.2840-0.2840-0.284G1×1133.24931.77030.291+0.1800+0.64000-0.1800-0.3600-0.3600-0.360G1.1/4×1141.91040.4313

3、8.952+0.1800+0.64000-0.1800-0.3600-0.3600-0.360G1.1/2×1147.80346.32444.854+0.1800+0.64000-0.1800-0.3600-0.3600-0.360G2×1159.61458.13556.656+0.1800+0.64000-0.1800-0.3600-0.3600-0.360G2.1/2”X1175.18473.70572.226+0.2170+0.64000-0.2170-0.4340-0.4340-0.434G3”X1187.88486.40584.926+0.2170+0.64000

4、-0.2170-0.4340-0.4340-0.434G3.1/2”X11100.33098.85197.372+0.2170+0.64000-0.2170-0.4340-0.4340-0.434英制錐管螺紋基本尺寸及公差（牙形角55º） BSPT螺紋代號基面上的直徑基準長度有效螺紋長度圓錐內螺紋基面軸向位移偏差（±mm）大徑中徑小徑基本最大最小基本最大最小R1/8×289.7289.1478.5664.04.93.16.57.45.61.1R1/4×1913.15712.30111.4456.07.34.79.711.08.41.7R3/8×

5、1916.66215.80614.9506.47.75.110.111.48.81.7R1/2×1420.95519.79318.6318.210.06.413.215.011.42.3R3/4×1426.44125.27924.1179.511.37.714.516.312.72.3R1×1133.24931.77030.29110.412.78.116.819.114.52.9R1.1/4×1141.91040.43138.95212.715.010.419.121.416.82.9R1.1/2×1147.80346.32444.84512

6、.715.010.419.121.416.82.9R2×1159.61458.13556.65615.918.213.623.425.721.12.9R2.1/2”X1175.18473.70572.22617.521.014.026.730.223.23.5R3”X1187.88486.40584.92620.624.117.129.833.326.33.5R3.1/2”X11100.33098.85197.37222.225.718.731.434.927.93.5美制管螺紋基本尺寸及公差（牙形角60º） UN(F)螺紋代號外螺紋內螺紋公差等級公差等級2A2B大徑中徑小

7、徑小徑中徑大徑最大最小最大最小最小最大最小最大JIC螺紋7/16×20UNF11.07910.87410.25410.1479.5689.72810.03310.28710.42411.1131/2×20UNF12.66712.46111.84111.73211.15611.32811.60811.87512.01712.79/16×18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.2883/4×16UNF19.01218.77317.98117.85417.1217.32317.6

8、7818.01918.18419.057/8×14UNF22.18421.92321.00620.86920.02520.26920.67621.04621.22422.2251-1/16×12UN26.94426.65525.5725.42524.42524.68925.14625.61325.80126.9881-5/16×12UN33.29433.00531.9231.77330.77531.03931.49631.96332.15433.3381-5/8×12UN41.22940.9439.88539.70538.7138.98939.44639

9、.90140.09441.2751-7/8×12UN47.57947.2946.20546.05345.0645.33945.79646.25146.44947.6252-1/2×12UN63.45263.16262.07861.9260.93261.21461.67162.12662.33263.5ORFS螺紋9/16×18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.28811/16×16UN17.42717.18816.39616.27415.53515.74816.10416

10、.43116.58917.46313/16×16UN20.59920.36119.56819.44418.70718.92319.27919.60619.76620.6381×14UNF25.35725.09524.17824.03623.19523.44423.82524.22124.40725.41-3/16×12UN30.11929.8328.74528.59827.627.86428.32128.78828.97930.1631-7/16×12UN36.46736.17735.09334.94333.94734.21434.67135.13835

11、.33136.5131-11/16×12UN42.81742.52741.44341.2940.29740.56441.02141.48841.68642.8632×12UN50.75450.46549.3849.22548.23548.51448.97149.42649.62750.8SAE螺紋5/8×18UNF15.83915.61814.92314.80314.16114.35114.68114.95815.1115.8751-1/16×14UN26.94726.68325.74325.60824.7424.96825.37525.78325.96

12、126.987其它美制螺紋9/16×16UN14.25214.01313.22113.10112.3612.57312.92913.25613.41114.2887/8×12UN22.18221.89220.80820.66819.66219.93920.39620.85121.03422.2252-1/4×12UN57.10456.81555.7355.57554.58554.86455.32155.77655.97657.15注：UNC粗牙螺紋系列，UNF細牙螺紋系列， UNEF超細牙螺紋系列， UN不變螺距系列布錐管螺紋基本尺寸及公差(牙形角60º

13、) NPT螺紋代號基面上的直徑螺紋長度大徑中徑小徑有效長度管端至基面長Z1/8×2710.2729.5198.76674.572Z1/4×1813.57212.44311.3149.55.080Z3/8×1817.05515.92614.79710.56.096Z1/2×1421.22319.77218.32113.58.028Z3/4×1426.56825.11723.666148.611Z1×11.533.22831.46129.69417.510.160Z1.1/4×11.541.98540.21838.4511810

14、.688Z1.1/2×11.548.05446.28744.52018.510.688Z2×11.560.09258.32556.5581911.074公制螺紋基本尺寸及公差(牙形角60º) M螺紋代號基本直徑內 螺 紋外螺紋大 徑中 徑小 徑公 差 等 級公差等級6H7H6g中徑公差小徑公差中徑公差小徑公差中徑公差大徑公差M10X1109.3508.917+0.1500+0.2360+0.1900+0.3000-0.026-0.138-0.026-0.206M12X11211.35010.917+0.1600+0.2360+0.2000+0.3000-0.026

15、-0.144-0.026-0.206M14X11413.35012.917+0.1600+0.2360+0.2000+0.3000-0.026-0.144-0.026-0.206M12X1.251211.18810.647+0.1800+0.2650+0.2240+0.3350-0.028-0.160-0.028-0.240M14X1.251413.18812.647+0.1800+0.2650+0.2240+0.3350-0.028-0.160-0.028-0.240M12X1.51211.02610.376+0.1900+0.3000+0.2360+0.3750-0.032-0.172-0

16、.032-0.268M14X1.51413.02612.376+0.1900+0.3000+0.2360+0.3750-0.032-0.172-0.032-0.268M16X1.51615.02614.376+0.1900+0.3000+0.2360+0.3750-0.032-0.172-0.032-0.268M18X1.51817.02616.373+0.1900+0.3000+0.2360+0.3750-0.032-0.172-0.032-0.268M20X1.52019.02618.376+0.1900+0.3000+0.2360+0.3750-0.032-0.172-0.032-0.2

17、68M22X1.52221.02620.376+0.1900+0.3000+0.2360+0.3750-0.032-0.172-0.032-0.268M24X1.52423.02622.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M26X1.52625.02624.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M27X1.52726.02625.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M30X1.

18、53029.02628.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M33X1.53332.02631.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M36X1.53635.02634.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M39X1.53938.02637.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M42X1.54241.02

19、640.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M27X22725.70124.835+0.2240+0.3750+0.2800+0.4750-0.038-0.208-0.038-0.318M30X23028.70127.835+0.2240+0.3750+0.2800+0.4750-0.038-0.208-0.038-0.318M33X23331.70130.835+0.2240+0.3750+0.2800+0.4750-0.038-0.208-0.038-0.318M36X23634.70133.835+0.2240+0

20、.3750+0.2800+0.4750-0.038-0.208-0.038-0.318M39X23937.70136.835+0.2240+0.3750+0.2800+0.4750-0.038-0.208-0.038-0.318M42X24240.70139.835+0.2240+0.3750+0.2800+0.4750-0.038-0.208-0.038-0.318M45X24543.70142.835+0.2240+0.3750+0.2800+0.4750-0.038-0.208-0.038-0.318M52X25250.70149.835+0.2360+0.3750+0.3000+0.4

21、750-0.038-0.218-0.038-0.318M60X26058.70157.835+0.2360+0.3750+0.3000+0.4750-0.038-0.218-0.038-0.318M64X26462.70161.835+0.2360+0.3750+0.3000+0.4750-0.038-0.218-0.038-0.318M72X27270.70169.835+0.2360+0.3750+0.3000+0.4750-0.038-0.218-0.038-0.31855°圓錐管螺紋基本尺寸對照表最新下載-匯興達55°圓錐管螺紋基本尺寸對照表最新下載-匯興達55&#

22、176;圓錐管螺紋(BSPT) 螺紋代號基本尺寸英寸大徑mmd=D螺距mmp每英寸牙數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mmR 1/161/16"7.7230.907287.1426.5610.5810.1256.4R 1/81/8"9.7280.907289.1478.5660.5810.1258.4R 1/41/4"13.1571.3371912.30111.4450.8560.18411.2R 3/83/8"16.6621.3371915.80614.9500.8560.18414.75R 1/21/2&

23、quot;20.9551.8141419.79318.6311.1620.24918.25R 3/43/4"26.4411.8141425.27924.1171.1620.24923.75R 11"33.2492.3091131.7730.2911.4790.31730R 1 1/41 1/4"41.9102.3091140.43138.9521.4790.31738.5R 1 1/21 1/2"47.8032.3091146.32444.8451.4790.31744.5R 22"59.6142.3091158.13556.6561.4790

24、.31756R 2 1/22 1/2"75.1842.3091173.70572.2261.4790.31771R 33"87.8842.3091186.40584.9261.4790.31785.5R 44"113.0302.30911111.551110.0721.4790.317110.5R 55"138.4302.30911136.951135.4721.4790.317136R 66"163.8302.30911162.351160.8721.4790.317161.5聊城市鑫茂祥管業有限公司專業經營鋼管規格：5mm*1mm1020m

25、m*200mm合金鋼管、外徑22mm-127mm冷軋無縫鋼管、外徑127mm-600mm，壁厚16mm-100mm，外徑精度±0.5%,壁厚精度±5%熱軋中厚壁無縫鋼管、16Mn外徑4001600mm、壁厚2060mm的大口徑厚壁卷管，可定尺到16米及各種規格的無縫方管、異型無縫鋼管等.常備鋼管種類有:構造用無縫鋼管、流體用無縫鋼管、液壓無縫鋼管、電力用無縫鋼管、石油輸送用無縫鋼管、化肥設備用無縫鋼管、煤礦用無縫鋼管、不銹鋼無縫鋼管、化工用無縫鋼管、紡織機械用無縫鋼管、汽車；水利用無縫鋼管，精密無縫鋼管、光亮無縫鋼管、軍工醫療用無縫鋼管、管道用無縫鋼管、支柱用無縫鋼管、合金

26、無縫管、高壓無縫管、大口徑直縫焊管等。適用于工程、煤礦 、紡織、電力、鍋爐、機械、軍工等各個領域。公司以良好的信用、優質的產品、雄厚的實力、低廉的價錢享譽全國30多個省、市、自治區、直轄市及國外，產品深得用戶依賴。    公司常年銷售成都鋼鐵集團、冶鋼集團、包頭鋼廠、寶鋼集團、 鞍鋼集團、天津大無縫、西寧特鋼廠、無錫鋼廠、衡陽鋼廠等各大鋼廠生產的各種無縫鋼管及合金管。主營材質：20#、35#、45#、20G、20A、40Mn2、45Mn2、27SiMn、40MnB、20MnVB、20Cr、30Cr、35Cr、40Cr、45Cr、50Cr、 38CrSi、12CrM

27、o 、20CrMo、35CrMo、42CrMo、12CrMoV、12Cr1MoV、38CrMoAL、50CrV、20CrMnSi、30CrMnSi、35CrMnSi、 20CrMnTi、30CrMnTi、12CrNi2、 12CrNi3、12Cr2Ni4、40CrNiMoA、45CrNiMoVA、20G、20MnG、25MnG、12CrMoG、15CrMoG、12Cr2MoG、12Cr1MoVG、12Cr2MoWVTiB、 12Cr3MoVSiTiB等實行標準：GB/T8162-99構造管、GB/T8163-99流體管、GB/T3087-99中低壓鍋爐管、GB/T5310-95高壓鍋爐管、GB

28、/T6479-2000化肥專用管、27SiMn液壓支架管、高壓合金管、GB/T9948-85石油裂化管GB9948-88、地質鉆探用管YB235-70、汽車半軸套管YB/T5035-96。    現我公司有大量合金管、高壓管、無縫方管、異型無縫鋼管現貨，將以優惠的價錢，批零兼營的方式，為您提供快捷優質的服務，歡迎新老客戶前來洽談、電議。管螺紋的基本尺寸表(2010-10-25 15:57:35) 轉載標簽： 雜談表（1）螺紋基本尺寸     G1/2  、ZG1/2   &#

29、160;                 (單位:mm) 尺寸代號每25.4mm類的牙數n螺距p牙型高度h圓弧半徑r基面上的基本直徑基準距離有效螺紋長度大徑（基準直徑）d=D中徑d2=D2小徑d1=D11/16280.9070.5810.1257.7237.1426.5614.06.51/8280.9070.5810.1259.7289.1478.5664.06.51/4191.3370.5860.18413.15712.30

30、111.4456.09.73/8191.3370.5860.18416.66215.80614.9506.410.11/2141.8141.1620.24920.95519.79318.6318.213.23/4141.8141.1620.24926.44125.27924.1179.514.51112.3091.4790.31733.24931.77030.29110.416.81.1/4112.3091.4790.31741.91040.43138.95212.719.11.1/2112.3091.4790.31747.80346.32444.84512.719.12112.3091.47

31、90.31759.61458.13556.65615.923.42.1/2112.3091.4790.31775.18473.70572.22617.526.73112.3091.4790.31787.88486.40584.92620.629.83.1/2112.3091.4790.317100.33098.85197.37222.231.44112.3091.4790.317113.030111.551110.07225.435.85112.3091.4790.317138.430136.951135.47228.640.16112.3091.4790.317163.830162.3511

32、60.87228.640.1 錐管螺紋的基本尺寸表（3-28）1/2PT  、1/2NPT 表（2）螺紋基本尺寸       (單位:mm) 尺寸代號每25.4mm類的牙數n基面上的基本直徑基準距離大徑（基準直徑）d=D中徑d2=D2小徑d1=D11/16277.8957.1426.3894.0641/82710.2429.4898.7364.1021/41813.61612.48711.3585.7863/81817.05515.92614.7976.0961/21421.22319.7721

33、8.3218.1283/41426.56825.11723.6668.611111.533.22831.46129.69410.1601.1/411.541.98540.21838.45110.6681.1/211.548.05446.28744.52010.668211.560.09258.32556.55811.0742.1/2872.69970.15967.61917.3233888.60886.06883.52819.4563.1/28101.31698.77696.23620.85348113.973111.433108.89321.438螺紋標準的一種，按外形分圓柱、圓錐兩種；按牙

34、型角分55°、60°兩種。螺紋中的1/4、1/2、1/8 標記是指螺紋尺寸的直徑，單位是英寸。一吋等于8分，1/4 吋就是2分，如此類推。國外常用英制螺紋的代號、名稱和標準號 ：B.S.W. 標準惠氏粗牙系列，一般用途圓柱螺紋 B.S.F. 標準惠氏細牙系列，一般用途圓柱螺紋 Whit.S 附加的惠氏可選擇系列，一般用途圓柱螺紋 Whit 惠氏牙型的非標準螺紋 以上為英國標準BS84 牙型角為55°的英制螺紋 UN 恒定螺距系

35、列的統一螺紋 UNC 粗牙系列的統一螺紋 UNF 細牙系列的統一螺紋 UNEF 超細牙系列的統一螺紋 UNS 特殊系列的統一螺紋 UNR 圓弧牙底恒定螺距系列的統一螺紋 UNRC 圓弧牙底粗牙系列統一螺紋 UNRF 圓弧牙底細牙系列統一螺紋 UNREF 圓弧牙底超細牙系列統一螺紋 UNRS 圓弧牙底特殊系列統一螺紋 以上為美國標準ANSIB1.1標準牙型(牙底是平的或隨意倒圓的)的內、外螺紋 圓弧

36、牙底的UNR、UNRC、UNRF、UNREF、NRS只用于外螺紋而沒有內螺紋 NPT 一般用途的錐管螺紋 NPSC 管接頭用直管螺紋 NPTR 導桿連接用錐管螺紋 NPSM 機械連接用直管螺紋 NPSL 鎖緊螺母用直管螺紋 NPSH 軟管連接用直管螺紋 以上為美國標準ANSIB1.20.1 牙型角為60°的英制管螺紋NPTF 干密封標準型錐管螺紋 美國標準ANSIB1.20.3 型 PTF-SAE 

37、;SHORT 干密封短型錐管螺紋 美國標準ANSIB1.20.3 型 NPSF 干密封標準型燃油用直管內螺紋 美國標準ANSIB1.20.3 型 NPS1 干密封標準型一般用直管內螺紋 美國標準ANSIB1.20.3 型 ACME 一般用途的梯形螺紋 美國標準ANSIB1.5 牙型角為29°的英制傳動螺紋 尺寸和公差使用與標準系列相同的公式計算的標準系列之外的所有直徑與螺距組合。 我國的60°圓錐管螺紋GB

38、/T12716-1991與之等效。 ACME螺紋包括一般用途的和定心的兩種配合的梯形螺紋，其中一般用途者與我國標準GB/T5796-1986規定的梯形螺紋的性能相類同。螺距用每英寸的牙數來表示，如：每英寸11牙，則螺距25.4/112.309mm  螺紋如何區分英制和公制？默認分類 2009-08-24 22:03:14 閱讀1281 評論0 字號：大中小 粗略判斷的話好像英制的比公職的牙距大（同規格的） NPT，PT，G都是管螺紋NPT 是 National (A

39、merican) Pipe Thread 的縮寫，屬於美國標準的 60 度錐管螺紋，用於北美地區國家標準可查閱 GB/T12716-1991PT 是 Pipe Thread 的縮寫，是 55 度密封圓錐管螺紋，屬惠氏螺紋家族，多用於歐洲及英聯邦國家常用於水及煤氣管行業，錐度規定為 1:16 國家標準可查閱 GB/T7306-2000G 是 55 度非螺紋密封管螺紋，屬惠氏螺紋家族標記為 G 代表圓

40、柱螺紋國家標準可查閱 GB/T7307-2001另外螺紋中的1/4、1/2、1/8 標記是指螺紋尺寸的直徑，單位是英吋行內人通常用分來稱呼螺紋尺寸，一吋等於分，1/4 吋就是分，如此類推G 好像就是管螺紋的統稱(Guan)，55，60度的劃分屬于功能性的，俗稱管圓。即螺紋由一圓柱面加工而成。ZG俗稱管錐，即螺紋由一圓錐面加工而成，一般的水管接頭都是這樣的，老國標標注為Rc公制螺紋用螺距來表示，美英制螺紋用每英寸內的螺紋牙數來表示，這是它們最大的區別，公制螺紋是60度等邊牙型，英制螺紋是等腰55度牙型，美制螺紋60度。公制螺紋用公制單位， 美英制

41、螺紋用英制單位。管螺紋主要用來進行管道的連接，其內外螺紋的配合緊密，有直管與錐管兩種。公稱直徑是指所連接的管道直徑，顯然螺紋大徑比公稱直徑大。1/4，1/2，1/8是英制螺紋的公稱直徑，單位是英寸。英制螺紋標準規格表寸Ww牙型代號大徑mmd=D螺距mmp每英寸牙數tpi中徑mmd2=D2小徑外螺紋d3牙型高H1底孔直徑mm 1/16"BSW1.5870.423601.3151.0500.2701.15 3/32"BSW2.3810.529482.0411.7030.3381.90 1/8"BSW3.1750.635402.7682.3

42、620.4062.50 5/32"BSW3.9690.793323.4592.9520.5073.20 3/16"BSW4.7621.058244.0843.4070.6773.70 7/32"BSW5.5561.058244.8784.2010.6774.50 1/4"BSW6.3501.270205.5374.7240.8135.10 5/16"BSW7.9381.411187.0346.1310.9046.50 3/8"BSW9.5251.588168.5097.492

43、1.0177.90 7/16"BSW11.1131.814149.9518.7891.1629.20 1/2"BSW12.7002.1171211.3459.9901.35510.40 5/8"BSW15.8762.3091114.39712.9181.47913.40 3/4"BSW19.0512.5401017.42415.7981.62716.25 7/8"BSW22.2262.822920.41918.6111.80719.25 1"BSW25.4003.175823

44、.36821.3352.03322.00 1 1/8"BSW28.5763.629726.25323.9292.32424.50 1 1/4"BSW31.7513.629729.42827.1042.32427.25 1 3/8"BSW34.9264.233632.21529.5052.71130.25 1 1/2"BSW38.1004.233635.39132.6802.71133.50 1 5/8"BSW41.2775.080538.0243

45、4.7713.25335.50 1 3/4"BSW44.4525.080541.19937.9463.25338.50 1 7/8"BSW47.6275.6454 1/244.01240.3983.61441.25 2"BSW50.8025.6454 1/247.18743.5733.61444.50 2 1/4"BSW57.1526.350453.08649.0204.06650.00 2 1/2"BSW63.5026.350459.

46、43655.3704.06656.00 2 3/4"BSW69.8537.2573 1/265.20560.5584.64761.50 3"BSW76.2037.2573 1/271.55666.9094.64768.00 3 1/4"BSW82.5537.8163 1/477.54872.5445.00573.75 3 1/2"BSW88.9037.8163 1/483.89978.8945.00580.00 3 3/4&q

47、uot;BSW95.2548.467389.83284.4105.42285.50 4"BSW101.6048.467396.18290.7605.42292.00 4 1/4"BSW107.9548.8352 7/8102.29796.6395.65798.00 4 1/2"BSW114.3048.8352 7/8108.647102.9905.657104.20 4 3/4"BSW120.6659.2372 3/4114.740108.6255.915

48、110.00 5"BSW127.0059.2372 3/4121.090115.1765.915116.50 5 1/4"BSW133.3559.6772 5/8127.159120.9636.196122.50 5 1/2"BSW139.7059.6772 5/8133.509127.3136.196128.50 5 3/4"BSW146.05510.1602 1/2139.549133.0436.506134.50 6"B

49、SW152.40610.1602 1/2145.900139.3946.506141.00            英制普通螺紋 - 細牙 - BSF英制普通螺紋 (惠氏螺紋) - 細牙 (BSW)名義尺寸BSF牙型代號大徑mmd=D螺距mmp每英寸牙數tpi中徑mmd2=D2小徑外螺紋d3牙型高H1底孔直徑mm 3/16BSF4.7630.794324.2553.7470.5084.007/32BSF5.5560.907284.9754.3940.5814.601/4BSF6.3500.977265.7255.1000.6255.309/32BSF7.1420.977266.5185.8930.6256.1