钢管、管螺纹公制英制对照表
螺纹管件公英制对照尺寸大全
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
Height
Bmin 6 6 8 10 11 13 14 16 17 19 21 25
Cmin 7.0 9.5 11.0 14.5 16.0 20.5 24.5 28.5 33.5 38.0 43.0 63.5
D
Lmin
S
Kmin Hmin
10
35
11.0
-
6
13
41
16.0
3
6
17
41
17.5
4
8
Sch40 STD
Sch80
Sch160 XXS
L
XS
○
○
○
○
60
○
○
90
120
○
○
150
180
32
1.1/4
40
1.1/2
50
2
国内沿用系列钢管(公制管) Metric Pipe
公称通径 Nominal Diameter
DN 10 15
20
25
32 40
50 有 A、B、C 三种型式，短管(公制管)仅有 C 型 80 L150 304 不锈钢(英制管),Φ18*2 L100 20 钢(公制管)
Head
全长 Length
英制螺纹标准对照表
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、d1 1/16 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 24.1177/8 14 1.814 30.201 27.8771 11 2.309 33.249 30.2911-1/8 11 2.309 37.897 34.9391-1/4 11 2.309 41.91 38.9521-1/2 11 2.309 47.803 44.8451-3/4 11 2.309 53.746 50.7882 11 2.309 59.614 56.6562-1/4 11 2.309 65.71 62.7522-1/2 11 2.309 75.184 72.2262-3/4 11 2.309 81.534 78.5783 11 2.309 87.884 84.9263-1/2 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英制螺纹标准JIS B 0203,JIS B 2301(mm)#0 1.52#1 1.85#2 2.18#3 2.51#4 2.84#5 3.18#6 3.51#7 3.84#8 4.17#10 4.83#12 5.481/4 6.35UNS 是英制普通粗牙螺纹; UNF 是英制航空标示皆将分母为8, 再直接称分子之番号.Ex: 1/8 x 0.50 –PPB: 1 分牙螺丝x 0.50”长, PPBEx: 5/16 x 0.50 –PPB = 2.5/8 x 0.50-PPB : 2 分半牙螺丝x 0.50”长, PPB Ex: 5/32 x 0.50 –PPB =1.25/8 x 0.50-PPB: 1 分2 厘半螺丝x 0.50”长, PP BEx: 1/4 x 0.50-PPB= 2/8 x 0.50-PPB: 2 分牙螺丝x 0.50”长, PPB注: 有时会标示粗牙或细牙.UNF: 细牙 :电子业较常用.UNC:粗牙: 重机械结构较常用.Ex: 3/8 x 0.50 ,UNF –PPB: 3 分细牙螺丝x 0.50”长, PPB.C-2: Length Code:为英寸标示, 须乘以25.40 换算为mm.用扣规量，与公制牙型吻合是公制螺纹，与英制螺纹吻合是英制螺纹。
螺纹基本尺寸对照表.
英制管螺纹基本尺寸及公差（牙形角55o）BSPP螺纹代号G1/8″×28G1/4″×19G3/8″×19G1/2″×14G5/8″×14G3/4″×14G1″×11G1.1/4″×11G1.1/2″×11G2″×11G2.1/2”X11G3”X11G3.1/2”X11基本直径内螺纹外螺纹A级B级大径中径小径中径公差小径公差中径公差大径公差中径公差大径公差9.7289.1478.566+0.170+0.28200000-0.107-0.214-0.214-0.214 13.15712.30111.445+0.125+0.445-0.125-0.250-0.2500-0.250 16.66215.80614.950+0.125+0.445000000-0.125-0.250-0.250-0.250 20.95519.79318.631+0.142+0.541000000-0.142-0.284-0.284-0.284 22.91121.74920.587+0.142+0.541000000-0.142-0.284-0.284-0.284 26.44125.27924.117+0.142+0.541000000-0.142-0.284-0.284-0.284 33.24931.77030.291+0.180+0.640000000-0.180-0.360-0.360-0.360 41.91040.43138.952+0.180+0.640000000-0.180-0.360-0.360-0.360 47.80346.32444.854+0.180+0.640000000-0.180-0.360-0.360-0.360 59.61458.13556.656+0.180+0.640000000-0.180-0.360-0.360-0.360 75.18473.70572.226+0.217+0.640000000-0.217-0.434-0.434-0.434 87.88486.40584.926+0.217+0.640000000-0.217-0.434-0.434-0.434 100.33098.85197.372+0.217+0.640000000-0.217-0.434-0.434-0.434英制锥管螺纹基本尺寸及公差（牙形角55o）BSPT基面上的直径基准长度有效螺纹长度圆锥内螺纹基面轴向螺纹代号大径中径小径基本最大最小基本最大最小位移误差（±mm）R1/8″×289.7289.1478.566 4.0 4.9 3.1 6.57.4 5.6 1.1R1/4″×1913.15712.30111.445 6.07.3 4.79.711.08.4 1.7 R3/8″×1916.66215.80614.950 6.47.7 5.110.111.48.8 1.7R1/2″×1420.95519.79318.6318.210.0 6.413.215.011.4 2.3R3/4″×1426.44125.27924.1179.511.37.714.516.312.7 2.3 R1″×1133.24931.77030.29110.412.78.116.819.114.5 2.9R1.1/4″×1141.91040.43138.95212.715.010.419.121.416.8 2.9R1.1/2″×1147.80346.32444.84512.715.010.419.121.416.8 2.9 R2″×1159.61458.13556.65615.918.213.623.425.721.1 2.9 R2.1/2”X1175.18473.70572.22617.521.014.026.730.223.2 3.5 R3”X1187.88486.40584.92620.624.117.129.833.326.3 3.5R3.1/2”X11100.33098.85197.37222.225.718.731.434.927.9 3.5美制管螺纹基本尺寸及公差（牙形角60o）UN(F)螺纹代号7/16″×20UNF1/2″×20UNF9/16″×18UN F3/4″×16UNF7/8″×14UNF1-1/16″×12UN1-5/16″×12UN1-5/8″×12UN1-7/8″×12UN2-1/2″×12UN9/16″×18UNF11/16″×16UN13/16″×16UN1″×14UNF1-3/16″×12UN1-7/16″×12UN1-11/16″×12UN2″×12UN5/8″×18UNF1-1/16″×14UN外螺纹内螺纹公差等级公差等级2A2B大径中径小径小径中径大径最大最小最大最小最小最大最小最大JIC螺纹11.07910.87410.25410.1479.5689.72810.03310.28710.42411.11312.66712.46111.84111.73211.15611.32811.60811.87512.01712.7 14.25214.03113.33513.22112.57312.75113.08113.37113.5214.288 19.01218.77317.98117.85417.1217.32317.67818.01918.18419.05 22.18421.92321.00620.86920.02520.26920.67621.04621.22422.225 26.94426.65525.5725.42524.42524.68925.14625.61325.80126.988 33.29433.00531.9231.77330.77531.03931.49631.96332.15433.338 41.22940.9439.88539.70538.7138.98939.44639.90140.09441.275 47.57947.2946.20546.05345.0645.33945.79646.25146.44947.625 63.45263.16262.07861.9260.93261.21461.67162.12662.33263.5ORFS螺纹14.25214.03113.33513.22112.57312.75113.08113.37113.5214.288 17.42717.18816.39616.27415.53515.74816.10416.43116.58917.463 20.59920.36119.56819.44418.70718.92319.27919.60619.76620.638 25.35725.09524.17824.03623.19523.44423.82524.22124.40725.4 30.11929.8328.74528.59827.627.86428.32128.78828.97930.163 36.46736.17735.09334.94333.94734.21434.67135.13835.33136.513 42.81742.52741.44341.2940.29740.56441.02141.48841.68642.863 50.75450.46549.3849.22548.23548.51448.97149.42649.62750.8SAE螺纹15.83915.61814.92314.80314.16114.35114.68114.95815.1115.875 26.94726.68325.74325.60824.7424.96825.37525.78325.96126.987其余美制螺纹9/16″×16UN14.25214.01313.22113.10112.3612.57312.92913.25613.41114.288 7/8″×12UN22.18221.89220.80820.66819.66219.93920.39620.85121.03422.225 2-1/4″×12UN57.10456.81555.7355.57554.58554.86455.32155.77655.97657.15注：UNC粗牙螺纹系列，UNF细牙螺纹系列，UNEF超细牙螺纹系列，UN不变螺距系列布锥管螺纹基本尺寸及公差(牙形角60o)NPT螺纹代号基面上的直径螺纹长度大径中径小径有效长度管端至基面长Z1/8″×2710.2729.5198.7667 4.572 Z1/4″×1813.57212.44311.3149.5 5.080 Z3/8″×1817.05515.92614.79710.5 6.096 Z1/2″×1421.22319.77218.32113.58.028Z3/4″×1426.56825.11723.666148.611Z1″×11.533.22831.46129.69417.510.160 Z1.1/4″×11.541.98540.21838.4511810.688Z1.1/2″×11.548.05446.28744.52018.510.688 Z2″×11.560.09258.32556.5581911.074公制螺纹基本尺寸及公差(牙形角60o)M基本直径螺纹代号大径中径小径M10X1109.3508.917 M12X11211.35010.917 M14X11413.35012.917 M12X1.251211.18810.647 M14X1.251413.18812.647 M12X1.51211.02610.376 M14X1.51413.02612.376 M16X1.51615.02614.376 M18X1.51817.02616.373 M20X1.52019.02618.376 M22X1.52221.02620.376 M24X1.52423.02622.376 M26X1.52625.02624.376 M27X1.52726.02625.376 M30X1.53029.02628.376 M33X1.53332.02631.376 M36X1.53635.02634.376 M39X1.53938.02637.376 M42X1.54241.02640.376 M27X22725.70124.835 M30X23028.70127.835 M33X23331.70130.835 M36X23634.70133.835 M39X23937.70136.835 M42X24240.70139.835 M45X24543.70142.835 M52X25250.70149.835 M60X26058.70157.835 M64X26462.70161.835 M72X27270.70169.835内螺纹外螺纹公差等级公差等级6H7H6g中径公差小径公差中径公差小径公差中径公差大径公差+0.150+0.236+0.190+0.300-0.026-0.026 0000-0.138-0.206 +0.160+0.236+0.200+0.300-0.026-0.026 0000-0.144-0.206 +0.160+0.236+0.200+0.300-0.026-0.026 0000-0.144-0.206 +0.180+0.265+0.224+0.335-0.028-0.028 0000-0.160-0.240 +0.180+0.265+0.224+0.335-0.028-0.028 0000-0.160-0.240 +0.190+0.300+0.236+0.375-0.032-0.032 0000-0.172-0.268 +0.190+0.300+0.236+0.375-0.032-0.032 0000-0.172-0.268 +0.190+0.300+0.236+0.375-0.032-0.032 0000-0.172-0.268 +0.190+0.300+0.236+0.375-0.032-0.032 0000-0.172-0.268 +0.190+0.300+0.236+0.375-0.032-0.032 0000-0.172-0.268 +0.190+0.300+0.236+0.375-0.032-0.032 0000-0.172-0.268 +0.200+0.300+0.250+0.375-0.032-0.032 0000-0.182-0.268 +0.200+0.300+0.250+0.375-0.032-0.032 0000-0.182-0.268 +0.200+0.300+0.250+0.375-0.032-0.032 0000-0.182-0.268 +0.200+0.300+0.250+0.375-0.032-0.032 0000-0.182-0.268 +0.200+0.300+0.250+0.375-0.032-0.032 0000-0.182-0.268 +0.200+0.300+0.250+0.375-0.032-0.032 0000-0.182-0.268 +0.200+0.300+0.250+0.375-0.032-0.032 0000-0.182-0.268 +0.200+0.300+0.250+0.375-0.032-0.032 0000-0.182-0.268 +0.224+0.375+0.280+0.475-0.038-0.038 0000-0.208-0.318 +0.224+0.375+0.280+0.475-0.038-0.038 0000-0.208-0.318 +0.224+0.375+0.280+0.475-0.038-0.038 0000-0.208-0.318 +0.224+0.375+0.280+0.475-0.038-0.038 0000-0.208-0.318 +0.224+0.375+0.280+0.475-0.038-0.038 0000-0.208-0.318 +0.224+0.375+0.280+0.475-0.038-0.038 0000-0.208-0.318 +0.224+0.375+0.280+0.475-0.038-0.038 0000-0.208-0.318 +0.236+0.375+0.300+0.475-0.038-0.038 0000-0.218-0.318 +0.236+0.375+0.300+0.475-0.038-0.038 0000-0.218-0.318 +0.236+0.375+0.300+0.475-0.038-0.038 0000-0.218-0.318 +0.236+0.375+0.300+0.475-0.038-0.038 0000-0.218-0.31855°圆锥管螺纹基本尺寸比较表最新下载 -汇兴达55°圆锥管螺纹基本尺寸比较表最新下载 -汇兴达55°圆锥管螺纹(BSPT)螺纹基本尺寸大径螺距每英寸中小径径外mm牙型高度代号R 1 / 1 6 R 1 / 8R 1 / 4R 3 / 8mm英寸d=D1/17.76"231/89.7"281/413."1573/816."662mmp0.9070.9071.3371.337牙数tpi28281919螺d2H1纹=Dd236.7.15420.581618.9.150.581476611.12.40.8563014514.15.90.8568065R11/220.1.819.14/ "955147932R33/426.1.8 25.14/ "441142794R33. 2.331.11"091124977R112.340.41.11/40911910431/ "4R112.346.47.11/20911803324/ "2R 59. 2.3 58.22"09116141351 8. 6 1.1623 12 4. 1 1.1621 73 0. 2 1.4799 13 8. 9 1.4795 24 4. 8 1.4794 55 6.6 1.4795 6R275.2.373.2111/21840970517 2. 21.479/"2R87. 2.33"88411309R1132.34".0311409R1382.35".4311509R1632.36".831160092684.86.9 1.47940526111110..55 1.479172131365..95 1.4794172161620..35 1.4798172聊城市鑫茂祥管业有限企业专业经营钢管规格：5mm*1mm—1020mm*200mm合金钢管、外径22mm-127mm冷轧无缝钢管、外径127mm-600mm，壁厚16mm-100mm，外径精度±0.5%,壁厚精度±5%热轧中厚壁无缝钢管、16Mn外径400—1600mm、壁厚20—60mm的大口径厚壁卷管，可定尺到16米及各样规格的无缝方管、异型无缝钢管等.常备钢管种类有:结构用无缝钢管、流体用无缝钢管、液压无缝钢管、电力用无缝钢管、石油输送用无缝钢管、化肥设施用无缝钢管、煤矿用无缝钢管、不锈钢无缝钢管、化工用无缝钢管、纺织机械用无缝钢管、汽车；水利用无缝钢管，精细无缝钢管、光明无缝钢管、军工医疗用无缝钢管、管道用无缝钢管、支柱用无缝钢管、合金无缝管、高压无缝管、大口径直缝焊管等。
公英制管子对照表
公英制管子对照表 低压流体输送用焊接钢管壁厚 ABCDE1 低压流体输送用焊接钢管 GB/T3092-932 带螺纹和不带螺纹钢管的直径和壁厚3 公称直径 DN外径 普通钢管 加厚钢管 4 mm in mm 壁厚 mm 壁厚 mm 5 6 1/8 10 2 2.5 6 8 1/4 13.5 2.25 2.75 7 10 3/8 17 2.25 2.75 8 15 1/2 21.3 2.75 3.25 9 20 3/4 26.8 2.75 3.5 10 25 1 33.5 3.25 4 11 32 1 1/4 42.3 3.25 4 12 40 1 1/2 48 3.5 4.25 13 50 2 60 3.5 4.5 14 65 2 1/2 75.5 3.75 4.5 15 80 3 88.5 4 4.75 16 100 4 114 4 5 17 125 5 140 4 5.5 18 150 61654.55.5ABCD1 公制和英制管子公称直径（DN ）对照表 23 公制，mm 英制，in 公制，mm 英制，in4 6 1/8 250 105 8 1/4 300 126 10 3/8 350 147 15 1/2 400 168 20 3/4 500 209 25 1 600 24 10 (32) 1 1/4 700 28 11 40 1 1/2 800 32 12 50 2 900 36 13 (65) 2 1/2 1000 40 14 80 3 1100 44 15 (90) 3 1/2 1200 48 16 100 4 1400 56 17 (125) 5 1500 60 18 150 6 1600 64 19 (175) 7 1800 72 20 200 8 2000 80 21 (225)9220088化工配管用无缝及焊接钢管尺寸IIA B C D E F G H I J K L M N O1 HG20553-93（小外径）Ia系列钢管的尺寸2公称直径DN 壁厚系列3 Sch.5S Sch.10S Sch.10Sch.20Sch.30Sch.40S Sch.40Sch.60Sch.80S Sch.80Sch.100Sch.120Sch.140Sch.1604 6 φ10.2×1.0φ10.2×1.2φ10.2×1.8φ10.2×1.8φ10.2×2.3φ10.2×2.35 8 φ13.5×1.2φ13.5×1.6φ13.5×1.6φ13.5×2.3φ13.5×2.9φ13.5×2.96 10 φ14×1.2φ14×1.6φ14×2.3φ14×2.3φ14×3.2φ14×3.27 15 φ18×1.6φ18×2.0φ18×2.9φ18×2.9φ18×3.6φ18×3.6φ18×4.58 20 φ25×1.6φ25×2.0φ25×2.9φ25×2.9φ25×4.0φ25×4.0φ25×5.69 25 φ32×1.6φ32×2.9φ32×3.2φ32×3.2φ32×4.5φ32×4.5φ32×6.310 (32) φ38×1.6φ38×2.9φ38×3.6φ38×3.6φ38×5.0φ38×5.0φ38×6.311 40 φ45×1.6φ45×2.9φ45×3.6φ45×3.6φ45×5.0φ45×5.0φ45×7.112 50 φ57×1.6φ57×2.9φ57×3.2φ57×4.0φ57×4.0φ57×5.6φ57×5.6φ57×8.813 (65)φ73×2.0φ73×3.2φ73×4.5φ73×5.0φ73×5.0φ73×7.1φ73×7.1φ73×10.014 80 φ89×2.0φ89×3.2φ89×4.5φ89×5.6φ89×5.6φ89×8.0φ89×8.0φ89×11.015 100 φ108×2.0φ108×3.2φ108×5.0φ108×6.3φ108×6.3φ108×8.8φ108×8.8φ108×11.0φ108×14.216 (125) φ133×2.9φ133×3.60φ133×6.3φ133×6.3φ133×10.0φ133×10.0φ133×12.5φ133×16.017 150 φ159×2.9φ159×3.6φ159×5.6φ159×7.1φ159×7.1φ159×11.0φ159×11.0φ159×14.2φ159×17.518 200 φ219×2.9φ219×4.0φ219×6.3φ219×7.1φ219×8.0φ219×8.0φ219×10.0φ219×12.5φ219×12.5φ219×16.0φ219×17.5φ219×20.0φ219×22.219 250 φ273×3.6φ273×4.0φ273×6.3φ273×8.0φ273×8.8φ273×8.8φ273×12.5φ273×12.5φ273×16.0φ273×17.5φ273×22.2φ273×25.0φ273×28.020 300 φ325×4.0φ325×4.5φ325×6.3φ325×8.8φ325×10.0φ325×10.0φ325×14.2φ325×12.5φ325×17.5φ325×22.2φ325×25.0φ325×28.0φ325×32.021 350 φ377×4.0φ377×5.0φ377×6.3φ377×8.0φ377×10.0φ377×10.0φ377×11.0φ377×16.0φ377×12.5φ377×20.0φ377×25.0φ377×28.0φ377×32.0φ377×36.022 400 φ426×4.0φ426×5.0φ426×6.3φ426×8.0φ426×10.0φ426×10.0φ426×12.5φ426×17.5φ426×12.5φ426×22.2φ426×28.0φ426×30.0φ426×36.0φ426×40.023 450 φ480×4.0φ480×5.0φ480×6.3φ480×8.0φ480×11.0φ480×10.0φ480×14.2φ480×20.0φ480×12.5φ480×25.0φ480×30.0φ480×36.0φ480×40.0φ480×45.024 500 φ530×5.0φ530×5.6φ530×6.3φ530×10.0φ530×12.5φ530×10.0φ530×16.0φ530×20.0φ530×12.5φ530×28.0φ530×32.0φ530×40.0φ530×45.0φ530×50.025 (550) φ559.0×5.0φ559.0×5.6φ559.0×6.3φ559.0×10.0φ559.0×12.5φ559.0×10.0 -----------φ559.0×25.0φ559.0×12.5φ559.0×28.0φ559.0×36.0φ559.0×40.0φ559.0×50.0φ559.0×55.0中石化钢管壁厚系列A B C D E F G H I J K L M N O P Q1公称直径DN 外径SH3405-96 碳素钢、低合金钢、合金钢、奥氏体不锈钢无缝及焊接钢管壁厚度，mm2 sch5s sch10s sch20s sch40s sch80s sch20 sch30 sch40 sch60 sch80 sch100 sch120 sch140 sch160 xxs3 10 17 1.2 1.6 2.0 2.5 3.2 2.5 3.54 15 22 1.6 2.0 2.5 3.0 4.0 3.0 4.0 5.0 7.55 20 27 1.6 2.0 2.5 3.0 4.0 3.0 4.0 5.5 8.06 25 34 1.6 2.8 3.0 3.5 4.5 3.5 4.5 6.5 9.07 (32) 42 1.6 2.8 3.0 3.5 5.0 3.5 5.0 7.0 10.08 40 48 1.6 2.8 3.0 4.0 5.0 4.0 5.0 7.0 10.09 50 60 1.6 2.8 3.5 4.0 5.5 3.5 4.0 5.0 5.5 7.0 8.5 11.010 (65) 76 2.0 3.0 3.5 5.0 7.0 4.5 5.0 6.0 7.0 8.0 9.5 14.011 80 89 2.0 3.0 4.0 5.5 7.5 4.5 5.5 6.5 7.5 9.0 11.0 15.012 100 114 2.0 3.0 4.0 6.0 8.5 5.0 6.0 7.0 8.5 11.0 14.0 17.013 (125) 140 2.8 3.5 5.0 6.5 9.5 5.0 6.5 8.0 9.5 13.0 - 16.0 19.014 150 168 2.8 3.5 5.0 7.0 11.0 5.5 6.5 7.0 9.5 11.0 14.0 18.0 22.015 200 219 2.8 4.0 6.5 8.0 13.0 6.57.0 8.0 10.0 13.0 15.0 18.0 20.0 24.0 23.016 250 273 3.5 4.0 6.5 9.5 15.0 6.58.0 9.5 13.0 15.0 18.0 22.0 25.0 28.0 25.017 300 325 4.0 4.5 6.5 9.5 17.0 6.58.5 10.0 14.0 17.0 22.0 25.0 28.0 34.0 26.018 350 356 4.0 5.0 8.09.5 11.0 15.0 19.0 24.0 28.0 32.0 36.019 400 406 4.5 5.0 8.09.5 13.0 17.0 22.0 26.0 32.0 36.0 40.020 450 457 8.011.0 14.0 19.0 24.0 30.0 35.0 40.0 45.021 500 508 9.513.0 15.0 20.0 26.0 32.0 38.0 45.0 50.022 550 559 9.513.0 17.0 22.0 28.0 35.0 42.0 48.0 54.023 600 610 9.514.0 18.0 25.0 32.0 38.0 45.0 52.0 60.0GB钢管壁厚系列A B C D E F G H I J K L M N O P1 公称直径DN外径mm 配GB12459-90无缝管件系列A用碳素钢、低合金钢、合金钢及奥氏体不锈钢无缝钢管壁厚2 mm in sch5s sch10 sch10s sch20 sch20s sch30 sch40 sch60 sch80 sch100 sch120 sch140 sch1603 15 1/2 21.3 1.6 1.6 2.0 2.0 2.6 2.9 3.64 20 3/4 26.9 1.6 1.8 2.0 2.3 2.6 2.9 4.0 5.65 25 1 33.7 1.6 2.0 2.9 2.6 3.2 3.2 4.5 6.36 (32) 1 1/4 42.4 1.6 2.6 2.9 2.9 3.2 3.6 5.0 6.37 40 1 1/2 48.3 1.6 2.6 2.9 2.9 3.2 3.6 5.0 7.18 50 2 60.3 1.6 2.9 2.9 3.2 3.6 4.0 5.6 8.89 (65) 2 1/2 76.1 2.0 4.0 3.2 4.5 3.6 5.0 7.1 10.010 80 3 88.9 2.0 4.0 3.2 4.5 4.0 5.6 8.0 11.011 100 4 114.3 2.0 4.5 3.2 5.0 4.0 6.3 8.8 11.0 14.212 (125) 5 139.7 2.9 4.5 3.6 5.0 5.0 5.6 6.3 8.0 10.0 12.5 16.013 150 6 168.3 2.9 5.0 3.6 5.6 5.0 6.3 7.1 8.0 11.0 14.2 17.514 200 8 219.1 2.9 5.9 4.0 6.3 6.3 7.1 8.0 10.0 12.5 16.0 17.5 20.0 22.215 250 10 273 3.6 5.9 4.0 6.3 6.3 8.0 8.8 12.5 16.0 17.5 22.2 25.0 28.016 300 12 323.9 4.0 5.9 4.5 6.3 6.3 8.8 10.0 14.2 17.5 22.2 25.0 28.0 32.017 350 14 355.6 4.0 6.3 5.0 8.0 10.0 11.0 16.0 20.0 25.0 28.0 32.0 36.018 400 16 406.4 4.0 6.3 5.0 8.0 10.0 12.5 17.5 22.2 28.0 30.0 36.0 40.019 450 18 457 4.0 6.3 5.0 8.0 11.0 14.2 20.0 25.0 30.0 36.0 40.0 45.020 500 20 508 5.0 6.3 5.6 10.0 12.5 16.0 20.0 28.0 32.0 40.0 45.0 50.0主要配管标准外径对照A B C D E F G H I J K L M1 中国主要配管用标准外径与ISO及各国标准的对照2 日本（JIS）JIS配管用ISO 英国（BS）德国（DIN）美国（ANSI）中国3 公称直径ISO 4200系列ⅠISO 65 BS 3600 BS 1387 DIN 2448 DIN2458DIN 2440 DIN2441 ANSI B36,10 GB8163 SH34054 A,mm B, in 外径5 1 2 3 4 56789 10 11 12 136 6 1/8 10.5 10.2 （10.2）10.2 （10.2）10.2 10.2 10.37 8 1/4 13.8 13.5 （13.5）13.5 （13.6）13.5 13.5 13.78 10 3/8 17.3 17.2 （17.1）17.2 （17.1）17.2 17.2 17.1 14.0 17.09 15 1/2 21.7 21.3 （21.4）21.3 （21.4）21.3 21.3 21.3 18.0 22.0 22.010 20 3/4 27.2 26.9 （26.9）26.9 （26.9）26.9 26.9 26.7 25.0 27.0 27.011 25 1 34.0 33.7 （33.75）33.7 （33.8）33.7 33.7 33.4 32.0 34.0 34.012 （32）1+1/4 42.7 42.4 （42.45）42.4 （42.5）42.4 42.4 42.2 （38）42.0 42.013 40 1+1/2 48.6 48.2 （48.35）48.3 （48.4）48.3 48.3 48.3 45.0 48.0 48.014 50 2 60.5 60.3 （60.25）60.3 （60.3）60.3 60.3 60.3 57.0 60.0 60.015 （65）2+1/2 76.3 76.1 （75.95）76.1 （76）76.1 76.1 73 76.016 80 3 89.1 88.9 （88.75）88.9 （88.8）88.9 88.9 88.9 89.0 89.017 （90）3+1/2 101.6 101.6 101.6 101.618 100 4 114.3 114.3 （114.05）114.3 （114.1）114.3 114.3 114.3 108.0 114.0 114.019 （125） 5 139.8 139.7（139.65）139.7（139.7）139.7139.7141.3 133.0 140.0 140.020 150 6 165.2 168.2 （165.2）163.3 （165.1）168.3 165.1 168.3 159.0 168.0 168.021 （175）7 190.7 193.7 193.722 200 8 216.3 219.1 219.1 219.1 219.1 219.0 219.023 （225）9 241.824 250 10 267.4 273 273 273 273 273.0 273.025 300 12 318.5 323.9 323.9 323.9 323.9 325.0 325.026 350 14 355.6 355.6 335.6 335.6 355 377.0 356.027 400 16 406.4 406.4 406.4 406.4 406.4 426.0 406.028 （450）18 457.0 457 457 457.2 457.2 480.0 457.029 500 20 508.0 508 508 508 508 530.0 508.030 （550）22 558.8 559 558.8 558 559.031 600 24 609.6 610 610 609.6 609.6 630.0 610.0。
公制和英制螺纹对照表
公制和英制螺纹对照表
公制和英制螺纹是两种常用的螺纹标准。
公制螺纹用螺距表示螺纹的尺寸，而英制螺纹则用每英寸包含的螺纹数量表示尺寸。
以下是公制和英制螺纹之间的转换表，以mm（毫米）为单位：
1. 公制螺纹尺寸转换为英制螺纹尺寸：
- M = 0.63659 inches = 1.27 inches (公制螺纹)
- NPT = 0.30642 inches = 1 inches (英制螺纹)
- PT = 0.23624 inches = 1/4 inches (英制螺纹)
- NPSC = 0.29371 inches = 3/8 inches (英制管螺纹)
2. 英制螺纹尺寸转换为公制螺纹尺寸：
- 0.3048 inches = 0.64676 inches (英制螺纹)
- NPT = 3.14 * 0.3048 = 1.1304 mm (公制螺纹)
- NPSC = 3.14 * 0.29371 = 0.9919 mm (公制螺纹)
- PT = 3.14 * 0.23624 = 0.6096 mm (公制螺纹)
注意：上述转换表仅供参考，实际应用中可能因螺纹类型、材料等因素而有所不同。
在进行螺纹转换时，请根据实际情况调整。
管径公制及英制的对照表
管径公制及英制的对照表LG GROUP system office room 【LGA16H-LGYY-LGUA8Q8-LGA162】管径公制及英制的对照表公称直径(nominal diameter)，又称平均外径(mean outside diameter)。
这是缘自金属管的管璧很薄，管外径与管内径相差无几，所以取管的外径与管的内径之平均值当作管径称呼。
因为单位有公制(mm)及英制(inch)的区分，所以有下列的称呼方法。
1. 以公制(mm)为基准，称 DN (metric unit)公制单位2. 以英制(inch)为基准，称NB(inch unit)英寸单位3. DN (nominal diameter公称内径)，NB (nominal bore公称内径)，OD(outside diameter外径)英制管径和公制管径的换算方法一、管的直径指的是管的内径。
由于壁厚不一样，如4分管外径有多种。
4分、6分、1寸是英制说法。
4分管1\2"---管径分管3\4"---管径19mm1寸管1"---管径二、换算方法：1. 4分管是G1/2英寸的俗称。
2. 工程上管子的公称尺寸表示它的内径，这里表示内径1/2英寸，在公制管中圆整为15mm。
三、水管的4分、6分、1寸等指的是内径，大约15mm、20mm，25mm；8分为一寸，所以4分、6分管又称为1/2、3/4；20mm对应4分管一般用于塑料管材，指的是管材的外径，实际的通径与4分管对应；所以新型管材的规格跟镀锌管相比要放大一个规格。
管径公制及英制对照表1英寸=8英分=，4分==半寸，6分==3/4寸。
各国标准螺纹基本尺寸对照表
各国标准-螺纹基本尺寸对照表英制管螺纹基本尺寸及公差（牙形角55º） BSPP螺纹代号基本直径内螺纹外螺纹大径中径小径中径公差小径公差A级B级中径公差大径公差中径公差大径公差G1/8″×28 9.728 9.147 8.566+0.170 +0.282-0.107-0.214-0.214-0.214G1/4″×1913.157 12.301 11.445 +0.125 +0.445 -0.125 -0.250 -0.250 0-0.250G3/8″×19 16.662 15.806 14.950+0.125+0.445-0.125-0.250-0.250-0.250G1/2″×14 20.955 19.793 18.631+0.142+0.541-0.142-0.284-0.284-0.284G5/8″×14 22.911 21.749 20.587+0.142+0.541-0.142-0.284-0.284-0.284G3/4″×14 26.441 25.279 24.117+0.142+0.541-0.142-0.284-0.284-0.284G1″×11 33.249 31.770 30.291 +0.180+0.640-0.180-0.360-0.360-0.360G1.1/4″×11 41.910 40.431 38.952+0.180+0.640-0.180-0.360-0.360-0.360G1.1/2″×11 47.803 46.324 44.854+0.180+0.640-0.180-0.360-0.360-0.360G2″×11 59.614 58.135 56.656 +0.180+0.640-0.180-0.360-0.360-0.360G2.1/2”X1175.184 73.705 72.226 +0.217+0.640-0.217-0.434-0.434-0.434G3”X1187.884 86.405 84.926 +0.217+0.640-0.217-0.434-0.434-0.434G3.1/2”X11100.330 98.851 97.372 +0.217+0.640-0.217-0.434-0.434-0.434英制锥管螺纹基本尺寸及公差（牙形角55º） BSPT螺纹代号基面上的直径基准长度有效螺纹长度圆锥内螺纹基面轴向位移偏差（±mm）大径中径小径基本最大最小基本最大最小R1/8″×289.728 9.147 8.566 4.0 4.9 3.1 6.5 7.4 5.6 1.1R1/4″×1913.157 12.301 11.445 6.0 7.3 4.7 9.7 11.0 8.4 1.7R3/8″×1916.662 15.806 14.950 6.4 7.7 5.1 10.1 11.4 8.8 1.7R1/2″×1420.955 19.793 18.631 8.2 10.0 6.4 13.2 15.0 11.4 2.3R3/4″×1426.441 25.279 24.117 9.5 11.3 7.7 14.5 16.3 12.7 2.3 R1″×11 33.249 31.770 30.291 10.4 12.7 8.1 16.8 19.1 14.5 2.9 R1.1/4″×1141.910 40.431 38.952 12.7 15.0 10.4 19.1 21.4 16.8 2.9R1.1/2″×1147.803 46.324 44.845 12.7 15.0 10.4 19.1 21.4 16.8 2.9R2″×11 59.614 58.135 56.656 15.9 18.2 13.6 23.4 25.7 21.1 2.9 R2.1/2”X1175.184 73.705 72.226 17.5 21.0 14.0 26.7 30.2 23.2 3.5 R3”X1187.884 86.405 84.926 20.6 24.1 17.1 29.8 33.3 26.3 3.5 R3.1/2”X11100.330 98.851 97.372 22.2 25.7 18.7 31.4 34.9 27.9 3.5 美制管螺纹基本尺寸及公差（牙形角60º） UN(F)螺纹代号外螺纹内螺纹公差等级公差等级2A 2B大径中径小径小径中径大径最大最小最大最小最小最大最小最大JIC螺纹7/16″×20UNF11.079 10.874 10.254 10.147 9.568 9.728 10.033 10.287 10.424 11.113 1/2″×20UNF 12.667 12.461 11.841 11.732 11.156 11.328 11.608 11.875 12.017 12.7 9/16″×18UNF14.252 14.031 13.335 13.221 12.573 12.751 13.081 13.371 13.52 14.288 3/4″×16UNF 19.012 18.773 17.981 17.854 17.12 17.323 17.678 18.019 18.184 19.057/8″×14UNF 22.184 21.923 21.006 20.869 20.025 20.269 20.676 21.046 21.224 22.225 1-1/16″×26.944 26.655 25.57 25.425 24.425 24.689 25.146 25.613 25.801 26.98812UN1-5/16″×33.294 33.005 31.92 31.773 30.775 31.039 31.496 31.963 32.154 33.33812UN1-5/8″×41.229 40.94 39.885 39.705 38.71 38.989 39.446 39.901 40.094 41.27512UN1-7/8″×47.579 47.29 46.205 46.053 45.06 45.339 45.796 46.251 46.449 47.62512UN2-1/2″×63.452 63.162 62.078 61.92 60.932 61.214 61.671 62.126 62.332 63.512UNORFS螺纹9/16″×14.252 14.031 13.335 13.221 12.573 12.751 13.081 13.371 13.52 14.28818UNF11/16″×17.427 17.188 16.396 16.274 15.535 15.748 16.104 16.431 16.589 17.46316UN13/16″×20.599 20.361 19.568 19.444 18.707 18.923 19.279 19.606 19.766 20.63816UN1″×14UNF 25.357 25.095 24.178 24.036 23.195 23.444 23.825 24.221 24.407 25.4 1-3/16″×30.119 29.83 28.745 28.598 27.6 27.864 28.321 28.788 28.979 30.16312UN1-7/16″×36.467 36.177 35.093 34.943 33.947 34.214 34.671 35.138 35.331 36.51312UN1-11/16″×42.817 42.527 41.443 41.29 40.297 40.564 41.021 41.488 41.686 42.86312UN2″×12UN 50.754 50.465 49.38 49.225 48.235 48.514 48.971 49.426 49.627 50.8SAE螺纹5/8″×18UNF 15.839 15.618 14.923 14.803 14.161 14.351 14.681 14.958 15.11 15.875 1-1/16″×26.947 26.683 25.743 25.608 24.74 24.968 25.375 25.783 25.961 26.98714UN其它美制螺纹9/16″×16UN 14.252 14.013 13.221 13.101 12.36 12.573 12.929 13.256 13.411 14.288 7/8″×12UN 22.182 21.892 20.808 20.668 19.662 19.939 20.396 20.851 21.034 22.225 2-1/4″×12UN57.104 56.815 55.73 55.575 54.585 54.864 55.321 55.776 55.976 57.15 注：UNC粗牙螺纹系列，UNF细牙螺纹系列，UNEF超细牙螺纹系列，UN不变螺距系列螺纹代号基面上的直径螺纹长度大径中径小径有效长度管端至基面长Z1/8″×27 10.272 9.519 8.766 7 4.572 Z1/4″×18 13.572 12.443 11.314 9.5 5.080 Z3/8″×18 17.055 15.926 14.797 10.5 6.096 Z1/2″×14 21.223 19.772 18.321 13.5 8.028 Z3/4″×14 26.568 25.117 23.666 14 8.611 Z1″×11.5 33.228 31.461 29.694 17.5 10.160 Z1.1/4″×11.5 41.985 40.218 38.451 18 10.688 Z1.1/2″×11.5 48.054 46.287 44.520 18.5 10.688 Z2″×11.5 60.092 58.325 56.558 19 11.074 公制螺纹基本尺寸及公差(牙形角60º) M螺纹代号基本直径内螺纹外螺纹大径中径小径公差等级公差等级6H 7H 6g中径公差小径公差中径公差小径公差中径公差大径公差M10X1 10 9.350 8.917 +0.150+0.236+0.190+0.300-0.026-0.138-0.026-0.206M12X1 12 11.350 10.917 +0.160+0.236+0.200+0.300-0.026-0.144-0.026-0.206M14X1 14 13.350 12.917 +0.160+0.236+0.200+0.300-0.026-0.144-0.026-0.206M12X1.25 12 11.188 10.647 +0.180+0.265+0.224+0.335-0.028-0.160-0.028-0.240M14X1.25 14 13.188 12.647 +0.180+0.265+0.224+0.335-0.028-0.160-0.028-0.240M12X1.5 12 11.026 10.376 +0.190+0.300+0.236+0.375-0.032-0.172-0.032-0.268M14X1.5 14 13.026 12.376 +0.190+0.300+0.236+0.375-0.032-0.172-0.032-0.268M16X1.5 16 15.026 14.376 +0.190+0.300+0.236+0.375-0.032-0.172-0.032-0.268M18X1.5 18 17.026 16.373 +0.190+0.300+0.236+0.375-0.032-0.172-0.032-0.268M20X1.5 20 19.026 18.376 +0.190+0.300+0.236+0.375-0.032-0.172-0.032-0.268M22X1.5 22 21.026 20.376 +0.190+0.300+0.236+0.375-0.032-0.172-0.032-0.268M24X1.5 24 23.026 22.376 +0.200+0.300+0.250+0.375-0.032-0.182-0.032-0.268M26X1.5 26 25.026 24.376 +0.200+0.300+0.250+0.375-0.032-0.182-0.032-0.268 M27X1.5 27 26.026 25.376+0.200+0.300+0.250+0.375-0.032-0.182-0.032-0.268 M30X1.5 30 29.026 28.376+0.200+0.300+0.250+0.375-0.032-0.182-0.032-0.268 M33X1.5 33 32.026 31.376+0.200+0.300+0.250+0.375-0.032-0.182-0.032-0.268 M36X1.5 36 35.026 34.376+0.200+0.300+0.250+0.375-0.032-0.182-0.032-0.268 M39X1.5 39 38.026 37.376+0.200+0.300+0.250+0.375-0.032-0.182-0.032-0.268 M42X1.5 42 41.026 40.376+0.200+0.300+0.250+0.375-0.032-0.182-0.032-0.268 M27X2 27 25.701 24.835+0.224+0.375+0.280+0.475-0.038-0.208-0.038-0.318 M30X2 30 28.701 27.835+0.224+0.375+0.280+0.475-0.038-0.208-0.038-0.318 M33X2 33 31.701 30.835+0.224+0.375+0.280+0.475-0.038-0.208-0.038-0.318 M36X2 36 34.701 33.835+0.224+0.375+0.280+0.475-0.038-0.208-0.038-0.318 M39X2 39 37.701 36.835+0.224+0.375+0.280+0.475-0.038-0.208-0.038-0.318 M42X2 42 40.701 39.835+0.224+0.375+0.280+0.475-0.038-0.208-0.038-0.318 M45X2 45 43.701 42.835+0.224+0.375+0.280+0.475-0.038-0.208-0.038-0.318 M52X2 52 50.701 49.835+0.236+0.375+0.300+0.475-0.038-0.218-0.038-0.318 M60X2 60 58.701 57.835+0.236+0.375+0.300+0.475-0.038-0.218-0.038-0.318 M64X2 64 62.701 61.835+0.236+0.375+0.300+0.475-0.038-0.218-0.038-0.318 M72X2 72 70.701 69.835+0.236+0.375+0.300+0.475-0.038-0.218-0.038-0.318 55°圆锥管螺纹基本尺寸对照表最新下载-汇兴达55°圆锥管螺纹基本尺寸对照表最新下载-汇兴达55°圆锥管螺纹(BSPT)R 5 5"138.432.30911136.951135.4721.479R 66"163.832.30911162.351160.8721.479聊城市鑫茂祥管业有限公司专业经营钢管规格：5mm*1mm—1020mm*200mm合金钢管、外径22mm-127mm 冷轧无缝钢管、外径127mm-600mm，壁厚16mm-100mm，外径精度±0.5%,壁厚精度±5%热轧中厚壁无缝钢管、16Mn外径400—1600mm、壁厚20—60mm的大口径厚壁卷管，可定尺到16米及各种规格的无缝方管、异型无缝钢管等.常备钢管种类有:构造用无缝钢管、流体用无缝钢管、液压无缝钢管、电力用无缝钢管、石油输送用无缝钢管、化肥设备用无缝钢管、煤矿用无缝钢管、不锈钢无缝钢管、化工用无缝钢管、纺织机械用无缝钢管、汽车；水利用无缝钢管，精密无缝钢管、光亮无缝钢管、军工医疗用无缝钢管、管道用无缝钢管、支柱用无缝钢管、合金无缝管、高压无缝管、大口径直缝焊管等。
螺纹基本尺寸对照表
英制管螺纹基本尺寸及公差（牙形角55º）BSPP英制锥管螺纹基本尺寸及公差（牙形角55º）BSPT美制管螺纹基本尺寸及公差（牙形角60º）UN(F)公制螺纹基本尺寸及公差(牙形角60º) M55°圆锥管螺纹基本尺寸对照表最新下载-汇兴达55°圆锥管螺纹基本尺寸对照表最新下载-汇兴达55°圆锥管螺纹(BSPT)聊城市鑫茂祥管业有限公司专业经营钢管规格：5mm*1mm—1020mm*200mm合金钢管、外径22mm-127mm 冷轧无缝钢管、外径127mm-600mm，壁厚16mm-100mm，外径精度±0.5%,壁厚精度±5%热轧中厚壁无缝钢管、16Mn外径400—1600mm、壁厚20—60mm的大口径厚壁卷管，可定尺到16米及各种规格的无缝方管、异型无缝钢管等.常备钢管种类有:构造用无缝钢管、流体用无缝钢管、液压无缝钢管、电力用无缝钢管、石油输送用无缝钢管、化肥设备用无缝钢管、煤矿用无缝钢管、不锈钢无缝钢管、化工用无缝钢管、纺织机械用无缝钢管、汽车；水利用无缝钢管，精密无缝钢管、光亮无缝钢管、军工医疗用无缝钢管、管道用无缝钢管、支柱用无缝钢管、合金无缝管、高压无缝管、大口径直缝焊管等。
适用于工程、煤矿、纺织、电力、锅炉、机械、军工等各个领域。
公司以良好的信用、优质的产品、雄厚的实力、低廉的价钱享誉全国30多个省、市、自治区、直辖市及国外，产品深得用户依赖。
公司常年销售成都钢铁集团、冶钢集团、包头钢厂、宝钢集团、鞍钢集团、天津大无缝、西宁特钢厂、无锡钢厂、衡阳钢厂等各大钢厂生产的各种无缝钢管及合金管。
主营材质：20#、35#、45#、20G、20A、40Mn2、45Mn2、27SiMn、40MnB、20MnVB、20Cr、30Cr、35Cr、40Cr、45Cr、50Cr、38CrSi、12CrMo 、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等实行标准：GB/T8162-99构造管、GB/T8163-99流体管、GB/T3087-99中低压锅炉管、GB/T5310-95高压锅炉管、GB/T6479-2000化肥专用管、27SiMn液压支架管、高压合金管、GB/T9948-85石油裂化管GB9948-88、地质钻探用管YB235-70、汽车半轴套管YB/T5035-96。
螺纹管件尺寸表
DN NPS LB LB LB LB LB LB LB LB LB LB LB LB NPT Rc
Sch80 Sch160 XXS Sch80 Sch160 XXS Sch80 Sch160 XXS Sch80 Sch160 XXS
6 1/8 21 21 25 17 17 19 22 22 25 3.0 3.0 6.5 6.5 6.5
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
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
1. 平头外丝（短管）
螺纹管件尺寸表
国际通用系列钢管(英制管) Inch Pipe 公称通径
Nominal Diameter
DN
NPS
8
1/4
10
3/8
15
1/2
20
3/4
最全的螺纹孔径对照表(公制-英制)
5/16 - 18
3/8 - 16
7/16 - 14
1/2 - 13
9/16 - 12
5/8 - 11
3/4 - 10
7/8 - 9
1
-8
1-1/8 - 7
1-1/4 - 7
1-3/8 - 6
1-1/2 - 6
1-3/4 - 5
2
- 4-1/2
2级牙钻孔径 标准径
最大 最小
1.55 1.80 2.10 2.30 2.60 2.80 3.40 3.90 4.50 5.10 6.60 8.00 9.40 10.80 12.20 13.60 16.50 19.50 22.20 25.00 28.20 30.80 34.00 39.50 45.20
1.582 1.871 2.146 2.385 2.697 2.895 3.530 3.962 4.597 5.257 6.731 8.153 9.550 11.023 12.446 12.868 18.840 19.761 22.606 25.349 28.524 31.115 34.290 39.827 45.593
3.606 4.165 4.724 5.588
3.404 3.963 4.496 5.360
5/16 - 24
6.90 7.035 6.782
3/8 - 24
8.50 8.636 8.382
7/16 - 20
9.90 10.033 9.729
1/2 - 20
11.50 11.607 11.329
9/16 - 18
标准径
11.00 11.50 12.50 13.00 13.50 14.00 14.50 15.00 15.50 16.00 16.00 16.50 17.00 18.00 18.50 19.00 20.00 20.50 21.00 22.00 22.50 23.00 23.00 23.50 24.00 24.50 25.00 25.50 26.00 26.00 26.50 27.00 27.00 28.00 28.50 29.00 30.00 30.50 30.00 31.00 31.50 33.50 33.00 34.00 34.50
英制螺纹对照表
英制,公制螺纹对照表.UNS：英制普通粗牙螺纹; UNF：英制航空标示分母皆为为8, 再直接称分子之番号.Ex: 1/8 x 0.50 –PPB: 1 分牙螺丝x 0.50”长, PPBEx: 5/16 x 0.50 –PPB = 2.5/8 x 0.50-PPB : 2 分半牙螺丝x 0.50”长, PPB Ex: 5/32 x 0.50 –PPB =1.25/8 x 0.50-PPB: 1 分2 厘半螺丝x 0.50”长, PPB Ex: 1/4 x 0.50-PPB= 2/8 x 0.50-PPB: 2 分牙螺丝x 0.50”长, PPB注: 标示也分粗牙或细牙.UNF: 细牙-电子业较常用.UNC:粗牙-重机械结构较常用.Ex: 3/8 x 0.50 ,UNF –PPB: 3 分细牙螺丝x 0.50”长, PPB.C-2: Length Code:为英寸标示, 须乘以25.40 换算单位mm.可用扣规量，与公制牙型吻合是公制螺纹，与英制螺纹吻合是英制螺纹。
也可以用卡尺量螺纹的外径，和螺距。
公制螺纹外径是以毫米为单位，如6，8，10，12，18，20毫米等等螺距也是以毫米为单位，如0.5,0.75,1,1.5,2,3,等等英制螺纹外径以英寸为单位，（每英寸等于25.4 毫米）如3/16,5/8,1/4,1/2,等等所以用公制卡尺量外径读数常带不规则的小数。
英制螺距：是用每英寸含多少个牙表示。
将卡尺定在25.4毫米，用一个尺尖对齐螺纹牙尖，另一个尺尖对齐螺纹牙尖就是英制螺纹，如对不齐螺纹牙尖则是公制螺纹。
测量螺距时建议把螺纹的牙尖倒印在白粉笔上，因为粉笔上的印比较清晰，便于测量。
检测公制螺距应该测量一段长度，如10，15，20毫米，再数一下包含多少牙，算出螺距。
用英寸为单位规定螺纹规格为英制螺纹，如：G1"。
用公制单位毫米规定螺纹规格的为公制螺纹。
如：M30。
英制：是一英寸(24.5厘米)内有多少牙来定的,常规是55度角.公制则是两牙尖的间距是多少来定的螺距,英制粗牙螺纹标准英制管用螺纹标准英制管螺纹对照表----英制锥管螺纹对照表公称直径螺距低孔直径低孔深度G1/4 1.337 11.4 20 (19) G3/8 1.337 14.9 24 (19) G3/4 1.814 24.1 31 (14) G1 2.309 30.3 37 (11) G1-1/4 2.309 38.9 40 (11) G1-1/2 2.309 44.8 42 (11) G2 2.309 56.6 44 (11) ZG2 2.309 55.0 44 (11)。
管径公制英制对照表及常用尺寸转换
管径公制英制对照表及常用尺寸转换2.以英制(inch)为基准，称NB(inch unit)英寸单位3.DN (nominaldiameter公称内径)，NB (nominalbore公称内径)，OD (outsidediameter外径)xx单位换算：1千米（公里）=2市里0.6241英里=0.540海里1米=3市尺=3.281英尺1海里=1.852千米（公里）=3.704市里=1.150英里1市尺=0.333米=1.094英尺1英里=1.609千米（公里）=3.219市里1英尺=12英寸=0.914市尺1平方千米（平方公里）=100公顷=4平方市里.=0.386平方海里1公亩=100平方米=0.15市亩1公顷=100平方米=100公亩=15市亩一千克（公斤）=2市斤=2.205英磅1市斤=0.5千克（公斤）=1.102英镑1英磅=16盎司=0.454千克（公斤）=0.907市斤1升（公制）=1公斤=1六升=1市升=0.220加仑（英制）1毫升=1xx=0.001升（公制）1加仑（英制）=4.546升=5.546市升管径公制及英制对照表DN(mm)公称内径NB(inch)公称内径OD(mm)外径对应欧标内螺纹俗称DN6101分管DN813.52分管DN10173分管DN1521.34分管DN2026.76分管DN25133.4RP11寸管DN3242.21寸2DN4048.31寸半DN50260.3RP22寸DN6573.02寸半DN80388.9RP33寸DN.3RP44寸DN.8RP55寸DN.3RP66寸DN.1RP88寸DNDNDNDNDNDNDN规范不同，外径会有些许差异，请注意。
1英寸=8英分=25.4mm，4分=12.7mm=半寸，6分寸。
螺纹基本尺寸对照表
英制管螺纹基本尺寸及公差（牙形角55o）BSPP基本直径内螺纹外螺纹螺纹代号A 级B 级大径中径小径中径公差小径公差中径公差大径公差中径公差大径公差G1/8″× 289.7289.1478.566+0.170+0.2820000 0-0.107-0.214-0.214-0.214G1/4″× 1913.15712.30111.445+0.125+0.445-0.125-0.250-0.2500-0.250G3/8″× 1916.66215.80614.950+0.125+0.4450000 00-0.125-0.250-0.250-0.250G1/2″× 1420.95519.79318.631+0.142+0.5410000 00-0.142-0.284-0.284-0.284G5/8″× 1422.91121.74920.587+0.142+0.5410000 00-0.142-0.284-0.284-0.284G3/4″× 1426.44125.27924.117+0.142+0.5410000 00-0.142-0.284-0.284-0.284G1″× 1133.24931.77030.291+0.180+0.6400000 00-0.180-0.360-0.360-0.360G1.1/4″× 1141.91040.43138.952+0.180+0.6400000 00-0.180-0.360-0.360-0.360G1.1/2″× 1147.80346.32444.854+0.180+0.6400000 00-0.180-0.360-0.360-0.360G2″× 1159.61458.13556.656+0.180+0.6400000 00-0.180-0.360-0.360-0.360G2.1/2 ” X1175.18473.70572.226+0.217+0.640000000-0.217-0.434-0.434-0.434 G3” X1187.88486.40584.926+0.217+0.640000000-0.217-0.434-0.434-0.434G3.1/2 ” X11100.33098.85197.372+0.217+0.6400000 00-0.217-0.434-0.434-0.434英制锥管螺纹基本尺寸及公差（牙形角55o）BSPT基面上的直径基准长度有效螺纹长度圆锥内螺纹基面轴向螺纹代号大径中径小径基本最大最小基本最大最小位移偏差（± mm）R1/8″× 289.7289.1478.566 4.0 4.9 3.1 6.57.4 5.6 1.1R1/4″× 1913.15712.30111.445 6.07.3 4.79.711.08.4 1.7R3/8″× 1916.66215.80614.950 6.47.7 5.110.111.48.8 1.7R1/2″× 1420.95519.79318.6318.210.0 6.413.215.011.4 2.3R3/4″× 1426.44125.27924.1179.511.37.714.516.312.7 2.3 R1″× 1133.24931.77030.29110.412.78.116.819.114.5 2.9R1.1/4″× 1141.91040.43138.95212.715.010.419.121.416.8 2.9R1.1/2″× 1147.80346.32444.84512.715.010.419.121.416.8 2.9 R2″× 1159.61458.13556.65615.918.213.623.425.721.1 2.9 R2.1/2 ” X1175.18473.70572.22617.521.014.026.730.223.2 3.5 R3” X1187.88486.40584.92620.624.117.129.833.326.3 3.5R3.1/2 ” X11100.33098.85197.37222.225.718.731.434.927.9 3.5美制管螺纹基本尺寸及公差（牙形角60o）UN(F)外螺纹内螺纹公差等级公差等级螺纹代号2A2B大径中径小径小径中径大径最大最小最大最小最小最大最小最大JIC 螺纹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″× 18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.288 3/4″× 16UNF19.01218.77317.98117.85417.1217.32317.67818.01918.18419.05 7/8″× 14UNF22.18421.92321.00620.86920.02520.26920.67621.04621.22422.225 1-1/16″× 12UN26.94426.65525.5725.42524.42524.68925.14625.61325.80126.988 1-5/16″× 12UN33.29433.00531.9231.77330.77531.03931.49631.96332.15433.338 1-5/8″× 12UN41.22940.9439.88539.70538.7138.98939.44639.90140.09441.275 1-7/8″× 12UN47.57947.2946.20546.05345.0645.33945.79646.25146.44947.625 2-1/2″× 12UN63.45263.16262.07861.9260.93261.21461.67162.12662.33263.5ORFS 螺纹9/16″× 18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.288 11/16″× 16UN17.42717.18816.39616.27415.53515.74816.10416.43116.58917.463 13/16″× 16UN20.59920.36119.56819.44418.70718.92319.27919.60619.76620.638 1″× 14UNF25.35725.09524.17824.03623.19523.44423.82524.22124.40725.4 1-3/16″× 12UN30.11929.8328.74528.59827.627.86428.32128.78828.97930.163 1-7/16″× 12UN36.46736.17735.09334.94333.94734.21434.67135.13835.33136.513 1-11/16″× 12UN42.81742.52741.44341.2940.29740.56441.02141.48841.68642.863 2″× 12UN50.75450.46549.3849.22548.23548.51448.97149.42649.62750.8SAE 螺纹5/8″× 18UNF15.83915.61814.92314.80314.16114.35114.68114.95815.1115.8751-1/16″× 14UN26.94726.68325.74325.60824.7424.96825.37525.78325.96126.987其它美制螺纹9/16″× 16UN14.25214.01313.22113.10112.3612.57312.92913.25613.41114.288 7/8″× 12UN22.18221.89220.80820.66819.66219.93920.39620.85121.03422.225 2-1/4″× 12UN57.10456.81555.7355.57554.58554.86455.32155.77655.97657.15注： UNC 粗牙螺纹系列，UNF 细牙螺纹系列，UNEF 超细牙螺纹系列，UN 不变螺距系列布锥管螺纹基本尺寸及公差 (牙形角 60o)NPT基面上的直径螺纹长度螺纹代号大径中径小径有效长度管端至基面长Z1/8 ″× 2710.2729.5198.7667 4.572 Z1/4 ″× 1813.57212.44311.3149.5 5.080 Z3/8 ″× 1817.05515.92614.79710.5 6.096 Z1/2 ″× 1421.22319.77218.32113.58.028 Z3/4 ″× 1426.56825.11723.666148.611 Z1 ″× 11.533.22831.46129.69417.510.160 Z1.1/4″× 11.541.98540.21838.4511810.688Z1.1/2″× 11.548.05446.28744.52018.510.688 Z2 ″× 11.560.09258.32556.5581911.074公制螺纹基本尺寸及公差(牙形角 60o)M基本直径螺纹代号大径中径小径M10X1109.3508.917 M12X11211.35010.917 M14X11413.35012.917 M12X1.251211.18810.647 M14X1.251413.18812.647 M12X1.51211.02610.376 M14X1.51413.02612.376 M16X1.51615.02614.376 M18X1.51817.02616.373 M20X1.52019.02618.376 M22X1.52221.02620.376 M24X1.52423.02622.376 M26X1.52625.02624.376 M27X1.52726.02625.376 M30X1.53029.02628.376 M33X1.53332.02631.376 M36X1.53635.02634.376 M39X1.53938.02637.376 M42X1.54241.02640.376 M27X22725.70124.835 M30X23028.70127.835 M33X23331.70130.835 M36X23634.70133.835 M39X23937.70136.835 M42X24240.70139.835 M45X24543.70142.835 M52X25250.70149.835 M60X26058.70157.835 M64X26462.70161.835 M72X27270.70169.835内螺纹外螺纹公差等级公差等级6H7H6g中径公差小径公差中径公差小径公差中径公差大径公差+0.150+0.236+0.190+0.300-0.026-0.026 0000-0.138-0.206 +0.160+0.236+0.200+0.300-0.026-0.026 0000-0.144-0.206 +0.160+0.236+0.200+0.300-0.026-0.026 0000-0.144-0.206 +0.180+0.265+0.224+0.335-0.028-0.028 0000-0.160-0.240 +0.180+0.265+0.224+0.335-0.028-0.028 0000-0.160-0.240 +0.190+0.300+0.236+0.375-0.032-0.032 0000-0.172-0.268 +0.190+0.300+0.236+0.375-0.032-0.032 0000-0.172-0.268 +0.190+0.300+0.236+0.375-0.032-0.032 0000-0.172-0.268 +0.190+0.300+0.236+0.375-0.032-0.032 0000-0.172-0.268 +0.190+0.300+0.236+0.375-0.032-0.032 0000-0.172-0.268 +0.190+0.300+0.236+0.375-0.032-0.032 0000-0.172-0.268 +0.200+0.300+0.250+0.375-0.032-0.032 0000-0.182-0.268 +0.200+0.300+0.250+0.375-0.032-0.032 0000-0.182-0.268 +0.200+0.300+0.250+0.375-0.032-0.032 0000-0.182-0.268 +0.200+0.300+0.250+0.375-0.032-0.032 0000-0.182-0.268 +0.200+0.300+0.250+0.375-0.032-0.032 0000-0.182-0.268 +0.200+0.300+0.250+0.375-0.032-0.032 0000-0.182-0.268 +0.200+0.300+0.250+0.375-0.032-0.032 0000-0.182-0.268 +0.200+0.300+0.250+0.375-0.032-0.032 0000-0.182-0.268 +0.224+0.375+0.280+0.475-0.038-0.038 0000-0.208-0.318 +0.224+0.375+0.280+0.475-0.038-0.038 0000-0.208-0.318 +0.224+0.375+0.280+0.475-0.038-0.038 0000-0.208-0.318 +0.224+0.375+0.280+0.475-0.038-0.038 0000-0.208-0.318 +0.224+0.375+0.280+0.475-0.038-0.038 0000-0.208-0.318 +0.224+0.375+0.280+0.475-0.038-0.038 0000-0.208-0.318 +0.224+0.375+0.280+0.475-0.038-0.038 0000-0.208-0.318 +0.236+0.375+0.300+0.475-0.038-0.038 0000-0.218-0.318 +0.236+0.375+0.300+0.475-0.038-0.038 0000-0.218-0.318 +0.236+0.375+0.300+0.475-0.038-0.038 0000-0.218-0.318 +0.236+0.375+0.300+0.475-0.038-0.038 0000-0.218-0.31855 °圆锥管螺纹基本尺寸对照表最新下载-汇兴达55 °圆锥管螺纹基本尺寸对照表最新下载-汇兴达55 °圆锥管螺纹 (BSPT)螺纹基本尺寸大径螺距每英寸中小径径外mm牙型高度代号R 1 / 1 6R 1 / 8R 1 / 4R 3 / 8mm英寸d=D1/17.76"231/89.7"281/413."1573/816."662mmp0.9070.9071.3371.337牙数tpi28281919螺d2H1纹=Dd236.7.150.58142618.9.15470.5816611.12.40.8563014514.15.90.8568065R18.11/220. 1.819.1.162146/"95514793321R 24.3 3/4 26. 1.825. / "4411411.1621427941 73 R 33. 2.3 0.31. 1"24911 2 1.4791097791R 3 112.3 8.41.40.11/4091191.479910431/ "5 42R 4 1 14.1 47.2.31146.1.4791/28/ 80309324"4 2556.R59.2.358. 1.4792"11626140913556R 75.2.3 73.2 1171.4792184097051/22.1"2 /2 268R87. 2.34.86.3"884119 1.4793094052611131111R 2.311.550.4".03 1.47940910721 1381363R 2.311.955.5".43 1.479509147211631626R0.2.36".8311.35 1.479 60980172聊城市鑫茂祥管业有限公司专业经营钢管规格：5mm*1mm— 1020mm*200mm合金钢管、外径22mm-127mm 冷轧无缝钢管、外径127mm-600mm，壁厚16mm-100mm，外径精度±0.5%,壁厚精度±5%热轧中厚壁无缝钢管、 16Mn外径400—1600mm、壁厚20 —60mm的大口径厚壁卷管，可定尺到16 米及各种规格的无缝方管、异型无缝钢管等 . 常备钢管种类有:构造用无缝钢管、流体用无缝钢管、液压无缝钢管、电力用无缝钢管、石油输送用无缝钢管、化肥设备用无缝钢管、煤矿用无缝钢管、不锈钢无缝钢管、化工用无缝钢管、纺织机械用无缝钢管、汽车；水利用无缝钢管，精密无缝钢管、光亮无缝钢管、军工医疗用无缝钢管、管道用无缝钢管、支柱用无缝钢管、合金无缝管、高压无缝管、大口径直缝焊管等。
公制英制螺纹对照表
公制英制螺纹对照表公制英制螺纹对照表随着全球化的深入发展，各国之间的贸易交流越来越频繁。
在这个背景下，标准化成为一个至关重要的问题。
在机械制造领域，公制单位和英制单位之间的转换特别重要。
而螺纹是机械制造中常用的连接方式之一，因此公制和英制螺纹之间的对照表尤为关键。
一、公制螺纹公制螺纹是指采用国际标准组织（ISO）的螺纹标准，被广泛应用于全球范围内的机械制造领域。
公制螺纹的单位是毫米（mm），按一定的螺距进行定义。
以下是常见的公制螺纹对照表：螺纹规格螺距（mm）螺纹峰高（mm）螺纹深度（mm）M1.6 0.35 0.23 0.14M2 0.4 0.26 0.16M2.5 0.45 0.29 0.19M3 0.5 0.33 0.21M4 0.7 0.46 0.29M5 0.8 0.54 0.34M6 1 0.65 0.41M8 1.25 0.88 0.56M10 1.5 1.15 0.73M12 1.75 1.33 0.89二、英制螺纹英制螺纹是指采用英国国家标准（BSW）或美国标准（UNC）的螺纹标准，主要应用于英美国家和其他使用英美标准的国家。
英制螺纹的单位是英寸（inch），螺纹尺寸用“1/”加上表示螺纹每英寸所含螺纹的数量来表示。
以下是常见的英制螺纹对照表：螺纹规格螺距（线数/英寸）1/4” - 20 205/16” - 18 183/8” - 16 167/16” - 14 141/2” - 13 135/8” - 11 113/4” - 10 107/8” - 9 91” - 8 8三、公制英制螺纹对照公制螺纹与英制螺纹之间并不存在精确的转换关系，但是在某些情况下可以进行近似对照。
以下是常见的公制英制螺纹对照表：公制规格英制规格M2 4-40M2.5 4-36M3 6-32M4 8-32M5 10-32M6 10-24M8 1/4” - 20M10 5/16” - 18M12 3/8” - 16这些对照关系可以帮助制造商和供应商在公制单位和英制单位之间进行连接，减轻了贸易交流的难度。
螺纹各国标准对照
一、英制螺纹（螺纹牙型角55度）Thread of British standard ( Thread pitch shape an gle 55°)BSW－－－－英国标准惠氏螺纹（粗牙）British Standard Whitworth Thread ( C oarse )BSF－－－－英国标准惠氏螺纹（细牙）British Standard Whitworth Thread ( Fi ne )G－－－－直管螺纹（外螺纹分A、B两面级、丝锥分G、G－D）Straight pipe thr ead ( Outside )thread in A\B: taps in G、G－D )R－－－－锥管外螺纹（旧代号ZG;KG）Outside paper pipe thread ( Old thread code ZG,KG )RC－－－－锥管内螺纹（旧代号ZG;KG）Inside taper pipe thread ( Old thread code ZG,KG )二、美制螺纹（螺纹牙型角60度）Thread of American standard ( Thread pitch shape angle 60°UNC－－－－统一制粗牙螺纹（代替NC）Unified coarse pitch thread ( Instead of NC )UNF－－－－统一制细牙螺纹（代替NF）Unified fine pitch thread ( Instead of NF )UNEF－－－－统一制超细牙螺纹Unified superfine pitch threadUN－－－－－统一制不变螺距螺纹Unified threadUNS－－－－统一制特殊螺纹Unified Special threadNPT－－－－一般用途锥管螺纹（旧代号Z;K）Taper pipe thread for general pur pose ( Oldthread code Z,K )NPSC－－－－管接头直管内螺纹Internal straight pipe thread for connectionNPSM－－－－设备上自由配合，机械连接用直管螺纹Straight pipe thread for ge neral purposeNPTF－－－－干密封锥管螺纹Dryseal taper pipe threadNPSF－－－－干密封燃油直管螺纹Dryseal straight pipe internal threadNGT－－－－气瓶用锥螺纹Special thread for gas cylinder三、米制螺纹Metric threadZM－－－－－米制锥管螺纹Metric taper pipe thread四、其它螺纹Other threadsSM－－－－缝纫机螺纹Thread for sewing machinePZ－－－－气瓶用锥螺纹Special thread for gas cylinder5V1－20V1－气门芯螺纹5V1－20V1－Tyre valve thread螺纹代号说明示例：Explanation of thread code. e. g.1/4－20UNC1/4－公称直径1/4" nominal dia. 1/4"20－每寸20牙twenty teeth per inchUNC－美标统一制粗牙螺纹unified coarse pitch threadNPT为60度牙型角锥管螺纹,R为55度牙型角螺纹密封的管螺纹,R为圆柱外螺纹,RC为圆锥内螺纹,Z为标准锥管螺纹.NPT为60度牙型角锥管螺纹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Rp—与圆锥外螺纹配合的圆柱内螺纹R—圆锥外螺纹G螺纹表示非螺纹密封的管螺纹BSP为英制管螺纹总体代号，但是分为三种BSPP、BSPT和BSPF。