管螺纹尺寸表
管螺纹的基本尺寸表
管螺纹的基本尺寸表英制管螺纹内径外径对照表(换算成公制得对照表)尺寸代号每寸牙数大径中径小径建议底孔基准距离牙数1/8 27 10.242 9.489 8.736 φ8.6 4.102 4.36 1/4 18 13.616 12.487 11.358 φ11.1 5.786 4.10 3/8 18 17.055 15.926 14.797 φ14.5 6.096 4.32 1/2 14 21.223 19.772 18.321 φ17.9 8.128 4.48 3/4 14 26.568 25.117 23.666 φ23.2 8.611 4.75 1 11.5 33.228 31.461 29.694 φ29.2 10.160 4.601-1/4 11.5 41.985 40.218 38.451 φ37.9 10.668 4.831-1/2 11.5 48.054 46.287 44.520 φ43.9 10.668 4.83管螺纹的基本尺寸表(3-29)G1/2 、ZG1/2 、锥管螺纹的基本尺寸表(3-28)1/2PT 、1/2NPT 、A型美制螺纹(UNF)常用规格外螺纹内螺纹-4 9/16"-19牙14.28 13.08-6 11/16''-16 17.46 16.1-8 13/16''-16 20.64 19.28-10 1''-14 25.40 23.57-12 1(3/16)''-12 30.00 28.32-16 1(7/16)''-12 36.51 34.67-20 1(11/16)''-12 42.86 41.02英制,公制螺纹对照表.尺寸代号每英寸牙数螺距螺纹直径(in) n p 大径D、d 小径D1、d11/16 28 0.907 7.723 6.5611/8 28 0.907 9.728 8.5661/4 19 1.337 13.157 11.4453/8 19 1.337 16.662 14.951/2 14 1.814 20.955 18.6315/8 14 1.814 22.911 20.5873/4 14 1.814 26.441 24.117 7/8 14 1.814 30.201 27.877 1 11 2.309 33.249 30.291 1-1/8 11 2.309 37.897 34.939 1-1/4 11 2.309 41.91 38.952 1-1/2 11 2.309 47.803 44.845 1-3/4 11 2.309 53.746 50.788 2 11 2.309 59.614 56.656 2-1/4 11 2.309 65.71 62.752 2-1/2 11 2.309 75.184 72.226 2-3/4 11 2.309 81.534 78.578 3 11 2.309 87.884 84.926 3-1/2 11 2.309 100.33 97.3724 11 2.309 113.03 110.0725 11 2.309 138.43 135.4726 11 2.309 163.83 160.872 注:1in=25.4mm1、用螺纹密封的管螺纹其标记及各种螺纹的特征代号规定如下:Rc—圆锥内螺纹55度Rp—与圆锥外螺纹配合的圆柱内螺纹R—圆锥外螺纹标准规定将螺纹尺寸代号写在特征代号之后,若螺纹为械旋应再加写左旋代号LH,具体示例如下:圆锥内螺纹:Rc1/2左旋圆柱内螺纹:Rp1/2—LH圆柱内螺纹与圆锥外螺纹的配合:Rp2/R2左旋B级外螺纹:G1/2B—LH螺纹副G1/2G1/2A内螺纹:G1/2。
管螺纹尺寸对照表(全)
11
2.309
1.479
2寸
DN50
2
60.3
3.8
3.325
11Βιβλιοθήκη 2.3091.479
2.5寸 DN65
2.1/2
76.1
4
3.5
11
2.309
1.479
3寸
DN80
3
88.9
4
11
2.309
1.479
3.5寸
3.1/2
11
2.309
1.479
4寸
DN100
4
114.3
4
11
2.309
1.479
5寸
2 2.1/2
3 3.1/2
4
锥管螺纹的基本尺寸表(3-28)1/2PT 、
、
每25.4mm 类的牙数n
基面上的基本直径
大径(基准 直径)d=D
中径d2=D2
27
7.895
7.142
27
10.242
9.489
18
13.616
12.487
18
17.055
15.926
14
21.223
19.772
14
26.568
大径(基准 直径)d=D
中径d2=D2
小径d1=D1
0.125
7.723
7.142
6.561
0.125
9.728
9.147
8.566
0.184
13.157
12.301
11.445
0.184
16.662
15.806
14.950
0.249
20.955
管螺纹尺寸对照表(全)
管螺纹尺寸对照表(全)管螺纹尺寸对照表管螺纹是管道连接中最为常见的一种连接方式,用于连接管道和阀门、法兰等连接件。
管螺纹的尺寸对照表是指不同材质、不同规格的管螺纹的尺寸规格标准,是管螺纹连接时必要的参考。
下面是管螺纹尺寸对照表,供大家参考:1.螺纹尺寸(英寸)1/8 1/4 3/8 1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 411.5 18 18 14 14 11.5 11.5 11.5 11.527 27 27 18 18 14 14 11.5 11.5 11.5Close NPT 21.56 21.56 17.53 17.53 13.71 13.46 13.01 12.57 12.07 12.062.螺纹尺寸(mm)6 8 10 15 20 25 32 40 50 65 80 100G1/8 G1/4 G3/8 G1/2 G3/4 G1 G1-1/4 G1-1/2 G2 G2-1/2 G3 G4 9.728 13.157 16.662 20.995 26.441 33.249 41.91 47.803 60.263 76.108 89.892 114.310 13.5 16.9 21.34 26.67 33.4 42.2 48.3 60.3 76.3 90.2 114.3Rc1/8 Rc1/4 Rc3/8 Rc1/2 Rc3/4 Rc1 Rc1-1/4 Rc1-1/2 Rc2 Rc2-1/2 Rc3 Rc49.728 13.157 16.662 20.995 26.441 33.249 41.91 47.803 60.263 76.108 89.892 114.33.螺纹尺寸(牙距和牙深)英寸(mm) 牙距P(mm) 牙深h(mm)1/8(3.18mm) 0.907 2.7881/4(6.35mm) 0.722 3.1753/8(9.53mm) 0.656 3.5611/2(12.7mm) 0.518 3.9693/4(19.05mm) 0.518 5.3801(25.4mm) 0.410 6.3491-1/4(31.75mm) 0.410 7.1371-1/2(38.1mm) 0.354 7.6202(50.8mm) 0.322 9.5252-1/2(63.5mm) 0.262 10.9223(76.2mm) 0.262 12.3034(101.6mm) 0.209 15.494管螺纹尺寸对照表还有很多,上述只是其中一些常见的尺寸,不同行业对管螺纹的要求也有所不同,因此选购管螺纹连接件时需要根据具体情况来选择对应的管螺纹尺寸和材质。
螺纹管件尺寸表.
螺纹管件尺寸表1. 平头外丝(短管)国际通用系列钢管(英制管) Inch Pipe公称通径 Nominal Diameter 外径 Outside DiameterD Sch40 STD Sch80 XS Sch160 XXSLDN NPS 8 1/4 13.5 ○ 60 90 120 150 18010 3/8 17.2 ○ 15 1/2 21.3 ○ ○ 20 3/4 26.7 ○ ○ 25 1 33.4 ○ ○ 32 1.1/4 42.2 ○ ○ 40 1.1/2 48.3 ○ ○ 50260.3○○国内沿用系列钢管(公制管) Metric Pipe公称通径 Nominal Diameter外径 Outside DiameterD 厚度 Thickness长度 LengthDN 10 14 2-560 90 120 150 18015 18 20 25 25 32 32 38 40 45 5057注:短管(英制管)有A 、B 、C 三种型式,短管(公制管)仅有C 型订货示例:A(NPT)1/2" Sch80 L150 304不锈钢(英制管),Φ18*2 L100 20钢(公制管)国际通用系列钢管(英制管) Inch Pipe公称通径 Nominal Diameter 外径 Outside DiameterD Sch40 STD Sch80 XS Sch160 XXSLDN NPS 8 1/4 13.5 ○ 60 90 120 150 18010 3/8 17.2 ○ 15 1/2 21.3 ○ ○ 20 3/4 26.7 ○ ○ 25 1 33.4 ○ ○ 32 1.1/4 42.2 ○ ○ 40 1.1/2 48.3 ○ ○ 50260.3○○国内沿用系列钢管(公制管) Metric Pipe公称通径 Nominal Diameter外径 Outside DiameterD 厚度 Thickness长度 LengthDN 10 14 2-560 90 120 150 18015 18 20 25 25 32 32 38 40 45 5057注:短管(英制管)有A 、B 、C 三种型式,短管(公制管)仅有C 型订货示例:A(NPT)1/2" Sch80 L150 304不锈钢(英制管),Φ18*2 L100 20钢(公制管)国际通用系列钢管(英制管) Inch Pipe公称通径 Nominal Diameter 外径 Outside DiameterD Sch40 STD Sch80 XS Sch160 XXSLDN NPS 8 1/4 13.5 ○ 60 90 120 150 18010 3/8 17.2 ○ 15 1/2 21.3 ○ ○ 20 3/4 26.7 ○ ○ 25 1 33.4 ○ ○ 32 1.1/4 42.2 ○ ○ 40 1.1/2 48.3 ○ ○ 50260.3○○国内沿用系列钢管(公制管) Metric Pipe公称通径 Nominal Diameter外径 Outside DiameterD 厚度 Thickness长度 LengthDN 10 14 2-560 90 120 150 18015 18 20 25 25 32 32 38 40 45 5057注:短管(英制管)有A 、B 、C 三种型式,短管(公制管)仅有C 型订货示例:A(NPT)1/2" Sch80 L150 304不锈钢(英制管),Φ18*2 L100 20钢(公制管)公称通径Nominal Diameter 螺纹长度Length ofThread方头管塞Square Head Plug圆头管塞Round Head Plug六角头管塞和接头Hex Head Plug and Bushing 方头高度Height ofSquare平面宽度Width OfFlats圆头直径Diameter ofRound Head全长Length平面宽度Width OfFlats六角头高度Hex HeadHeightDN NPS L2min Bmin Cmin D Lmin S Kmin Hmin 6 1/8 9.5 6 7.0 10 35 11.0 - 6 8 1/4 11.0 6 9.5 13 41 16.0 3 6 10 3/8 12.5 8 11.0 17 41 17.5 4 8 15 1/2 14.5 10 14.5 21 44 22.0 5 8 20 3/4 16.0 11 16.0 27 44 27.0 6 10 25 1 19.0 13 20.5 33 51 35.0 6 10 32 1.1/4 20.5 14 24.5 43 51 44.5 7 14 40 1.1/2 20.5 16 28.5 48 51 51.0 8 16 50 2 22.0 17 33.5 60 64 63.5 9 17 65 2.1/2 27.0 19 38.0 73 70 76.0 10 19 80 3 28.5 21 43.0 89 70 89.0 10 21 100 4 32.0 25 63.5 114 76 117.5 13 25公称通径Nominal Diameter 螺纹长度Length ofThread方头管塞Square Head Plug圆头管塞Round Head Plug六角头管塞和接头Hex Head Plug andBushing 方头高度Height ofSquare平面宽度Width OfFlats圆头直径Diameter ofRound Head全长Length平面宽度Width OfFlats六角头高度Hex HeadHeightDN NPS L2min Bmin Cmin D Lmin S Kmin Hmin 6 1/8 9.5 6 7.0 10 35 11.0 - 6 8 1/4 11.0 6 9.5 13 41 16.0 3 6 10 3/8 12.5 8 11.0 17 41 17.5 4 8 15 1/2 14.5 10 14.5 21 44 22.0 5 8 20 3/4 16.0 11 16.0 27 44 27.0 6 10 25 1 19.0 13 20.5 33 51 35.0 6 10 32 1.1/4 20.5 14 24.5 43 51 44.5 7 14 40 1.1/2 20.5 16 28.5 48 51 51.0 8 16 50 2 22.0 17 33.5 60 64 63.5 9 17 65 2.1/2 27.0 19 38.0 73 70 76.0 10 19 80 3 28.5 21 43.0 89 70 89.0 10 21 100 4 32.0 25 63.5 114 76 117.5 13 25公称通径Nominal Diameter管箍、管帽长度The Length of Coupling and Cap外径Outside Diameter 管帽顶厚End Wall Thickness 螺纹长度Length of ThreadE F D CminDN NPS 3000LB 6000LB 3000LB 6000LB 3000LB 6000LB 3000LB 6000LBB L2 Sch160 XXS Sch160 XXS Sch160 XXS Sch160 XXS6 1/8 32 32 19 - 16 22 5.0 - 6.5 6.5 8 1/4 35 35 25 27 19 25 5.0 6.5 8.0 10.0 10 3/8 38 38 25 27 22 32 5.0 6.5 9.0 10.5 15 1/2 48 48 32 33 29 38 6.5 8.0 11.0 13.5 20 3/4 51 51 37 38 35 44 6.5 8.0 12.5 14.0 25 1 60 60 41 43 44 57 9.5 11.0 14.5 17.5 32 1.1/4 67 67 44 46 57 64 9.5 11.0 17.0 18.0 40 1.1/2 76 76 44 48 64 76 11.0 12.5 18.0 18.5 50 2 86 86 48 51 76 92 12.5 16.0 19.0 19.0 65 2.1/2 92 92 60 64 92 108 16.0 19.0 23.5 29.0 80 3 108 108 65 68 108 127 19.0 22.0 26.0 30.5 100 4 121 121 68 75 140 159 22.0 28.5 27.5 33.0公称通径中心至端面外径壁厚螺纹长度AD Cmin弯头、三通、四通45°弯头DN NPS 2000LB3000LB6000LB2000LB3000LB6000LB2000LB3000LB6000LB2000LB3000LB6000LB NPT Rc Sch80 Sch160 XXS Sch80 Sch160 XXS Sch80 Sch160 XXS Sch80 Sch160 XXS6 1/8 21 21 25 17 17 19 22 22 25 3.0 3.0 6.5 6.5 6.58 1/4 21 25 29 17 19 22 22 25 33 3.0 3.5 6.5 8.0 10.0 10 3/8 25 29 33 19 22 25 25 33 38 3.0 3.5 7.0 9.0 10.5 15 1/2 29 33 38 22 25 29 33 38 46 3.0 4.0 8.0 11.0 13.5 20 3/4 33 38 44 25 29 33 38 46 56 3.0 4.5 8.5 12.5 14.0 25 1 38 44 51 29 33 35 46 56 62 3.5 5.0 10.0 14.5 17.5 32 1.1/4 44 51 60 33 35 43 56 62 75 4.0 5.5 10.5 17.0 18.0 40 1.1/2 51 60 64 35 43 44 62 75 84 4.0 5.5 11.0 18.0 18.5 50 2 60 64 83 43 45 52 75 84 102 4.5 7.0 12.0 19.0 19.0 65 2.1/2 76 83 95 52 52 64 92 102 121 5.5 7.5 15.5 23.5 29.0 80 3 86 96 106 64 64 79 110 121 146 6.0 9.0 16.5 26.0 30.0 100 4 106 114 114 79 79 79 146 152 152 6.5 11.0 18.5 27.5 33.0公称通径中心至端面外径壁厚螺纹长度AD Cmin弯头、三通、四通45°弯头DN NPS 2000LB3000LB6000LB2000LB3000LB6000LB2000LB3000LB6000LB2000LB3000LB6000LB NPT Rc Sch80 Sch160 XXS Sch80 Sch160 XXS Sch80 Sch160 XXS Sch80 Sch160 XXS6 1/8 21 21 25 17 17 19 22 22 25 3.0 3.0 6.5 6.5 6.58 1/4 21 25 29 17 19 22 22 25 33 3.0 3.5 6.5 8.0 10.0 10 3/8 25 29 33 19 22 25 25 33 38 3.0 3.5 7.0 9.0 10.5 15 1/2 29 33 38 22 25 29 33 38 46 3.0 4.0 8.0 11.0 13.5 20 3/4 33 38 44 25 29 33 38 46 56 3.0 4.5 8.5 12.5 14.0 25 1 38 44 51 29 33 35 46 56 62 3.5 5.0 10.0 14.5 17.5 32 1.1/4 44 51 60 33 35 43 56 62 75 4.0 5.5 10.5 17.0 18.0 40 1.1/2 51 60 64 35 43 44 62 75 84 4.0 5.5 11.0 18.0 18.5 50 2 60 64 83 43 45 52 75 84 102 4.5 7.0 12.0 19.0 19.0 65 2.1/2 76 83 95 52 52 64 92 102 121 5.5 7.5 15.5 23.5 29.0 80 3 86 96 106 64 64 79 110 121 146 6.0 9.0 16.5 26.0 30.0 100 4 106 114 114 79 79 79 146 152 152 6.5 11.0 18.5 27.5 33.0公称通径中心至端面外径壁厚螺纹长度AD Cmin弯头、三通、四通45°弯头DN NPS 2000LB3000LB6000LB2000LB3000LB6000LB2000LB3000LB6000LB2000LB3000LB6000LB NPT Rc Sch80 Sch160 XXS Sch80 Sch160 XXS Sch80 Sch160 XXS Sch80 Sch160 XXS6 1/8 21 21 25 17 17 19 22 22 25 3.0 3.0 6.5 6.5 6.58 1/4 21 25 29 17 19 22 22 25 33 3.0 3.5 6.5 8.0 10.0 10 3/8 25 29 33 19 22 25 25 33 38 3.0 3.5 7.0 9.0 10.5 15 1/2 29 33 38 22 25 29 33 38 46 3.0 4.0 8.0 11.0 13.5 20 3/4 33 38 44 25 29 33 38 46 56 3.0 4.5 8.5 12.5 14.0 25 1 38 44 51 29 33 35 46 56 62 3.5 5.0 10.0 14.5 17.5 32 1.1/4 44 51 60 33 35 43 56 62 75 4.0 5.5 10.5 17.0 18.0 40 1.1/2 51 60 64 35 43 44 62 75 84 4.0 5.5 11.0 18.0 18.5 50 2 60 64 83 43 45 52 75 84 102 4.5 7.0 12.0 19.0 19.0 65 2.1/2 76 83 95 52 52 64 92 102 121 5.5 7.5 15.5 23.5 29.0 80 3 86 96 106 64 64 79 110 121 146 6.0 9.0 16.5 26.0 30.0 100 4 106 114 114 79 79 79 146 152 152 6.5 11.0 18.5 27.5 33.010.六角头内外螺纹接头(补芯)公称通径Nominal Diameter 螺纹长度Length ofThread方头管塞Square Head Plug圆头管塞Round Head Plug六角头管塞和接头Hex Head Plug and Bushing 方头高度Height ofSquare平面宽度Width OfFlats圆头直径Diameter ofRound Head全长Length平面宽度Width OfFlats六角头高度Hex Head HeightDN NPS L2min Bmin Cmin D Lmin S Kmin Hmin 6 1/8 9.5 6 7.0 10 35 11.0 - 6 8 1/4 11.0 6 9.5 13 41 16.0 3 6 10 3/8 12.5 8 11.0 17 41 17.5 4 8 15 1/2 14.5 10 14.5 21 44 22.0 5 8 20 3/4 16.0 11 16.0 27 44 27.0 6 10 25 1 19.0 13 20.5 33 51 35.0 6 10 32 1.1/4 20.5 14 24.5 43 51 44.5 7 14 40 1.1/2 20.5 16 28.5 48 51 51.0 8 16 50 2 22.0 17 33.5 60 64 63.5 9 17 65 2.1/2 27.0 19 38.0 73 70 76.0 10 19 80 3 28.5 21 43.0 89 70 89.0 10 21 100 4 32.0 25 63.5 114 76 117.5 13 2511.同径六角双丝头公称通径Nominal Diameter 尺寸SizeDN NPS H1 H2 H3 WDsch80 sch1606 1/8 6 10 --- 26 5 4 8 1/4 6 15 --- 367 6 8×6 1/4×1/8 6 15 10 31 5 4 10 3/8 8 16 --- 40 10 8 10×8 3/8×1/4 8 16 15 39 7 6 15 1/2 8 20 --- 48 13 10 15×10 1/2×3/8 8 20 16 44 10 8 15×8 1/2×1/4 8 20 15 43 7 6 20 3/4 10 21 --- 52 18 14 20×15 3/4×1/2 10 21 20 51 13 10 20×10 3/4×3/8 10 21 16 47 10 8 25 1 10 25 --- 60 23 19 25×20 1×3/4 10 25 21 56 18 14 25×15 1×1/2 10 25 20 55 13 10 32 1.1/4 12 25 --- 62 31 28 32×25 1.1/4×1 12 25 25 62 23 19 32×20 11/4×3/4 12 25 21 58 18 14 32×15 1.1/4×1/2 12 25 20` 57 13 10 40 11/2 16 26 --- 68 36 32 40×32 1.1/2×1.1/4 16 26 25 67 31 28 40×25 1.1/2×1 16 26 25 67 23 19 40×20 1.1/2×3/4 16 26 21 63 18 14 40×15 1.1/2×1/2 16 26 20 62 13 10 50 2 18 27 --- 72 47 40 50×40 2×1.1/2 18 27 26 71 36 32 50×32 2×1.1/4 18 27 25 70 31 28 50×25 2×1 18 27 25 70 23 19 50×20 2×3/4 18 27 21 66 18 14 50×15 2×1/2 18 27 20 65 13 10 65 2.1/2 20 38 --- 96 57 5165×50 2.1/2×2 20 38 27 85 47 40 65×40 2.1/2×1.1/2 20 38 26 84 36 32 65×32 2.1/2×1.1/4 20 38 25 83 31 28 65×25 2.1/2×1 20 38 25 83 23 19 65×20 2.1/2×3/420 38 21 79 18 14 80 3 20 40 --- 100 70 63 80×65 3×2.1/2 20 40 38 98 57 51 80×50 3×2 20 40 27 87 47 40 80×40 3×1.1/2 20 40 26 86 36 32 80×32 3×1.1/4 20 40 25 85 31 28 80×253×120402585231912. 单头螺纹管箍公称通径Nominal Diameter 管箍、管帽长度 The Length of Coupling and Cap 外径 Outside Diameter 管帽顶厚 End Wall Thickness 螺纹长度 Length of Thread EFD Cmin DN NPS 3000LB 6000LB 3000LB 6000LB 3000LB 6000LB 3000LB 6000LB B L2 Sch160 XXS Sch160 XXS Sch160 XXS Sch160 XXS 6 1/8 32 32 19 - 16 22 5.0 - 6.5 6.5 8 1/4 35 35 25 27 19 25 5.0 6.5 8.0 10.0 10 3/8 38 38 25 27 22 32 5.0 6.5 9.0 10.5 15 1/2 48 48 32 33 29 38 6.5 8.0 11.0 13.5 20 3/4 51 51 37 38 35 44 6.5 8.0 12.5 14.0 25 1 60 60 41 43 44 57 9.5 11.0 14.5 17.5 32 1.1/4 67 67 44 46 57 64 9.5 11.0 17.0 18.0 40 1.1/2 76 76 44 48 64 76 11.0 12.5 18.0 18.5 50 2 86 86 48 51 76 92 12.5 16.0 19.0 19.0 65 2.1/2 92 92 60 64 92 108 16.0 19.0 23.5 29.0 80 3 108 108 65 68 108 127 19.0 22.0 26.0 30.5 1004121121687514015922.028.527.533.013.异径六角双丝头公称通径Nominal Diameter 尺寸SizeDN NPS H1 H2 H3 WDsch80 sch1606 1/8 6 10 --- 26 5 4 8 1/4 6 15 --- 367 6 8×6 1/4×1/8 6 15 10 31 5 4 10 3/8 8 16 --- 40 10 8 10×8 3/8×1/4 8 16 15 39 7 6 15 1/2 8 20 --- 48 13 10 15×10 1/2×3/8 8 20 16 44 10 8 15×8 1/2×1/4 8 20 15 43 7 6 20 3/4 10 21 --- 52 18 14 20×15 3/4×1/2 10 21 20 51 13 10 20×10 3/4×3/8 10 21 16 47 10 8 25 1 10 25 --- 60 23 19 25×20 1×3/4 10 25 21 56 18 14 25×15 1×1/2 10 25 20 55 13 10 32 1.1/4 12 25 --- 62 31 28 32×25 1.1/4×1 12 25 25 62 23 19 32×20 11/4×3/4 12 25 21 58 18 14 32×15 1.1/4×1/2 12 25 20` 57 13 10 40 11/2 16 26 --- 68 36 32 40×32 1.1/2×1.1/4 16 26 25 67 31 28 40×25 1.1/2×1 16 26 25 67 23 19 40×20 1.1/2×3/4 16 26 21 63 18 14 40×15 1.1/2×1/2 16 26 20 62 13 10 50 2 18 27 --- 72 47 40 50×40 2×1.1/2 18 27 26 71 36 32 50×32 2×1.1/4 18 27 25 70 31 28 50×25 2×1 18 27 25 70 23 19 50×20 2×3/4 18 27 21 66 18 14 50×15 2×1/2 18 27 20 65 13 1065 2.1/2 20 38 --- 96 57 5165×50 2.1/2×2 20 38 27 85 47 40 65×40 2.1/2×1.1/2 20 38 26 84 36 32 65×32 2.1/2×1.1/4 20 38 25 83 31 28 65×25 2.1/2×1 20 38 25 83 23 19 65×20 2.1/2×3/4 20 38 21 79 18 1480 3 20 40 --- 100 70 6380×65 3×2.1/2 20 40 38 98 57 51 80×50 3×2 20 40 27 87 47 40 80×40 3×1.1/2 20 40 26 86 36 32 80×32 3×1.1/4 20 40 25 85 31 28 80×25 3×1 20 40 25 85 23 1914.螺纹活接头公称通径Nominal Diameter外径OutsideDiameter壁厚Wall Thickness承插孔径SocketBore流通孔径Water way Bore承插孔深度Depth ofSocket公称装配长度Length AssemNominal Dmin Cmin d1 d2 Jmin LDN NPS 承插焊Socket螺纹Threaded承插焊Socket螺纹Threaded承插焊Socket承插焊、螺纹Socket &Threaded承插焊Socket承插焊、螺纹Socket &Threaded6 1/8 21.8 14.7 3.2 2.5 10.65 6.43 10 41.48 1/4 21.8 19.0 3.3 3.1 14.10 9.45 10 41.4 10 3/8 25.9 22.9 3.5 3.2 17.55 13.51 10 46.0 15 1/2 31.2 27.7 4.1 3.8 21.70 17.07 10 49.0 20 3/4 37.1 33.5 4.3 4.0 27.05 21.39 13 56.9 25 1 45.5 41.4 5.0 4.6 33.80 27.74 13 62.0 32 11/4 54.9 50.5 5.3 4.9 42.55 35.36 13 71.1 40 11/2 61.5 57.2 5.6 5.1 48.65 41.20 13 76.5 50 2 75.2 70.1 6.1 5.6 61.10 52.12 16 86.1 65 21/2 91.7 85.3 7.7 7.1 73.80 64.31 16 102.4 80 3 109.2 102.4 8.4 7.7 89.80 77.27 16 109.015.双头螺纹管帽公称通径Nominal Diameter管箍、管帽长度The Length of Coupling and Cap外径Outside Diameter 管帽顶厚End Wall Thickness 螺纹长度Length of ThreadE F D CminDN NPS 3000LB 6000LB 3000LB 6000LB 3000LB 6000LB 3000LB 6000LBB L2 Sch160 XXS Sch160 XXS Sch160 XXS Sch160 XXS6 1/8 32 32 19 - 16 22 5.0 - 6.5 6.5 8 1/4 35 35 25 27 19 25 5.0 6.5 8.0 10.0 10 3/8 38 38 25 27 22 32 5.0 6.5 9.0 10.5 15 1/2 48 48 32 33 29 38 6.5 8.0 11.0 13.5 20 3/4 51 51 37 38 35 44 6.5 8.0 12.5 14.0 25 1 60 60 41 43 44 57 9.5 11.0 14.5 17.5 32 1.1/4 67 67 44 46 57 64 9.5 11.0 17.0 18.0 40 1.1/2 76 76 44 48 64 76 11.0 12.5 18.0 18.5 50 2 86 86 48 51 76 92 12.5 16.0 19.0 19.0 65 2.1/2 92 92 60 64 92 108 16.0 19.0 23.5 29.0 80 3 108 108 65 68 108 127 19.0 22.0 26.0 30.5 100 4 121 121 68 75 140 159 22.0 28.5 27.5 33.016.承插活接头公称通径Nominal Diameter外径OutsideDiameter壁厚Wall Thickness承插孔径SocketBore流通孔径Water way Bore承插孔深度Depth ofSocket公称装配长度Length AssemNominalDmin Cmin d1 d2 Jmin LDN NPS 承插焊Socket螺纹Threaded承插焊Socket螺纹Threaded承插焊Socket承插焊、螺纹Socket &Threaded承插焊Socket承插焊、螺纹Socket &Threaded6 1/8 21.8 14.7 3.2 2.5 10.65 6.43 10 41.48 1/4 21.8 19.0 3.3 3.1 14.10 9.45 10 41.4 10 3/8 25.9 22.9 3.5 3.2 17.55 13.51 10 46.0 15 1/2 31.2 27.7 4.1 3.8 21.70 17.07 10 49.0 20 3/4 37.1 33.5 4.3 4.0 27.05 21.39 13 56.9 25 1 45.5 41.4 5.0 4.6 33.80 27.74 13 62.0 32 11/4 54.9 50.5 5.3 4.9 42.55 35.36 13 71.1 40 11/2 61.5 57.2 5.6 5.1 48.65 41.20 13 76.5 50 2 75.2 70.1 6.1 5.6 61.10 52.12 16 86.1 65 21/2 91.7 85.3 7.7 7.1 73.80 64.31 16 102.4 80 3 109.2 102.4 8.4 7.7 89.80 77.27 16 109.017. 圆头管塞公称通径Nominal Diameter 螺纹长度 Length of Thread 方头管塞Square Head Plug 圆头管塞 Round Head Plug 六角头管塞和接头 Hex Head Plug and Bushing 方头高度 Height of Square 平面宽度 Width Of Flats 圆头直径 Diameter of Round Head全长 Length 平面宽度 Width Of Flats 六角头高度 Hex Head Height DN NPS L2min Bmin Cmin D Lmin S Kmin Hmin 6 1/8 9.5 6 7.0 10 35 11.0 - 6 8 1/4 11.0 6 9.5 13 41 16.0 3 6 10 3/8 12.5 8 11.0 17 41 17.5 4 8 15 1/2 14.5 10 14.5 21 44 22.0 5 8 20 3/4 16.0 11 16.0 27 44 27.0 6 10 25 1 19.0 13 20.5 33 51 35.0 6 10 32 1.1/4 20.5 14 24.5 43 51 44.5 7 14 40 1.1/2 20.5 16 28.5 48 51 51.0 8 16 50 2 22.0 17 33.5 60 64 63.5 9 17 65 2.1/2 27.0 19 38.0 73 70 76.0 10 19 80 3 28.5 21 43.0 89 70 89.0 10 21 100432.02563.511476117.51325。
管螺纹基本尺寸表
管螺纹的基本尺寸表英制管螺纹内径外径对照表(换算成公制得对照表)尺寸代号每寸牙数大径中径小径建议底孔基准距离牙数1/8 27 10.242 9.489 8.736 φ8.6 4.102 4.36 1/4 18 13.616 12.487 11.358 φ11.1 5.786 4.10 3/8 18 17.055 15.926 14.797 φ14.5 6.096 4.32 1/2 14 21.223 19.772 18.321 φ17.9 8.128 4.48 3/4 14 26.568 25.117 23.666 φ23.2 8.611 4.75 1 11.5 33.228 31.461 29.694 φ29.2 10.160 4.601-1/4 11.5 41.985 40.218 38.451 φ37.9 10.668 4.831-1/2 11.5 48.054 46.287 44.520 φ43.9 10.668 4.83管螺纹的基本尺寸表(3-29)G1/2 、ZG1/2 、锥管螺纹的基本尺寸表(3-28)1/2PT 、1/2NPT 、A型美制螺纹(UNF)常用规格外螺纹内螺纹-4 9/16"-19牙14.28 13.08-6 11/16''-16 17.46 16.1-8 13/16''-16 20.64 19.28-10 1''-14 25.40 23.57-12 1(3/16)''-12 30.00 28.32-16 1(7/16)''-12 36.51 34.67-20 1(11/16)''-12 42.86 41.02英制,公制螺纹对照表.尺寸代号每英寸牙数螺距螺纹直径(in) n p 大径D、d 小径D1、d11/16 28 0.907 7.723 6.5611/8 28 0.907 9.728 8.5661/4 19 1.337 13.157 11.4453/8 19 1.337 16.662 14.951/2 14 1.814 20.955 18.6315/8 14 1.814 22.911 20.5873/4 14 1.814 26.441 24.117 7/8 14 1.814 30.201 27.877 1 11 2.309 33.249 30.291 1-1/8 11 2.309 37.897 34.939 1-1/4 11 2.309 41.91 38.952 1-1/2 11 2.309 47.803 44.845 1-3/4 11 2.309 53.746 50.788 2 11 2.309 59.614 56.656 2-1/4 11 2.309 65.71 62.752 2-1/2 11 2.309 75.184 72.226 2-3/4 11 2.309 81.534 78.578 3 11 2.309 87.884 84.926 3-1/2 11 2.309 100.33 97.3724 11 2.309 113.03 110.0725 11 2.309 138.43 135.4726 11 2.309 163.83 160.872 注:1in=25.4mm1、用螺纹密封的管螺纹其标记及各种螺纹的特征代号规定如下:Rc—圆锥内螺纹55度Rp—与圆锥外螺纹配合的圆柱内螺纹R—圆锥外螺纹标准规定将螺纹尺寸代号写在特征代号之后,若螺纹为械旋应再加写左旋代号LH,具体示例如下:圆锥内螺纹:Rc1/2左旋圆柱内螺纹:Rp1/2—LH圆柱内螺纹与圆锥外螺纹的配合:Rp2/R2左旋B级外螺纹:G1/2B—LH螺纹副G1/2G1/2A内螺纹:G1/2。
管螺纹尺寸对照表 全
15.926 19.772 25.117 31.461 40.218 46.287 58.325 70.159 86.068 98.776 111.433
14.797 18.321 23.666 29.694 38.451 44.520 56.558 67.619 83.528 96.236 108.893
0.184 16.662 15.806 14.950 6 0.249 20.955 19.793 18.631 8
1.162
0.249 26.441 25.279 24.117 10
1.479 1.479
0.317 33.249 31.770 30.291 10 0.317 41.910 40.431 38.952 13
27
1/8
27
1/4
18
3/8
18
1/2
14
3/4
14
1
12
1.1/4
12
1.1/2
12
2
12
2.1/2
8
3
8
3.1/2
8
4
8
3-29)G1/2 、ZG1/2 、(以焊管、镀锌管为例)
螺距p
0.907 0.907 1.337 1.337 1.814 1.814 2.309 2.309 2.309 2.309 2.309 2.309 2.309 2.309 2.309 2.309
DN100 DN125 DN150 DN200 DN250
1/16
28
1/8
28
1/4
19
3/8
19
1/2 21.3 2.8 2.45
14
3/4 26.9 2.8 2.45
管螺纹尺寸对照表
管螺纹尺寸对照表1分的英制管螺纹即1/8英寸管螺纹,外径是9.729mm,内径是8.567mm,每英寸28牙,螺距0.907mm;2分的英制管螺纹即1/4英寸管螺纹,外径是13.458mm,内径是11.446mm,每英寸19牙,螺距1.337mm;3分的英制管螺纹即3/8英制管螺纹,外径是16.663mm,内径是14.951mm,每英寸19牙,螺距1.337mm;4分的英制管螺纹即1/2英寸管螺纹,外径是20.956mm,内径是18.632mm,每英寸14牙,螺距1.814mm。
普通螺纹的标记螺纹公差带代号的标注在螺纹代号之后,中间用“×”分开。
如果螺纹的中径公差带代号不同,则分别注出。
前者表示中径公差带,后者表示顶径公差带。
如果中径公差带与顶径公差带代号相同,则只标注一个代号。
例如:M105g6g,M10×16H。
内、外螺纹装配在一起,其公差带代号用斜线分开,左边表示内螺纹公差带代号,右边表示外螺纹公差带代号。
例如:M20×26H/6g;M20×2左6H/5g6g。
一般情况下,不标注螺纹旋合长度,其螺纹公差带按中等旋合长度确定。
必要时,在螺纹公差带代号之后加注旋合长度代号S或L,中间用“”分开。
例如:M105g6gS,M107HL。
螺纹公差带三组旋合长度分别表示为:S(短)、N(中)、L(长)】。
特殊需要时,可注明旋合长度的数值,中间用“”分开。
例如:M20×25g6g40。
管螺纹标准来源于英制惠氏螺纹,是衡量管螺纹大小的基本尺寸。
通常按1/16锥度关系,惠氏螺纹的径向直径公差转化为英制密封管螺纹的轴向牙数公差。
55度管螺纹:主要用来进行管道的连接,使其内外螺纹的配合紧密,有直管和锥管两种。
管螺纹尺寸对照表(全)
11
2.309
1.479
2寸
DN50
2
60.3
3.8
3.325
11
2.309
1.479
2.5寸 DN65
2.1/2
76.1
4
3.5
11
2.309
1.479
3寸
DN80
3
88.9
4
11
2.309
1.479
3.5寸
3.1/2
11
2.309
1.479
4寸
DN100
4
114.3
4
11
2.309
1.479
5寸
大径(基准 直径)d=D
中径d2=D2
小径d1=D1
0.125
7.723
7.142
6.561
0.125
9.728
9.147
8.566
0.184
13.157
12.301
11.445
0.184
16.662
15.806
14.950
0.249
20.955
19.793
18.631
0.249
26.441
25.279
24.117
0.317
33.249
31.770
30.291
0.317
41.910
40.431
38.952
0.317
47.803
46.324
44.845
0.317
59.614
58.135
56.656
0.317
75.184
73.705
72.226
0.317